# Plot coordinate pairs

Plot coordinate pairs
You are encouraged to solve this task according to the task description, using any language you may know.

Plot a function represented as    x,  y    numerical arrays.

Post the resulting image for the following input arrays (taken from Python's Example section on Time a function):

      x = {0,   1,    2,    3,    4,    5,     6,     7,     8,     9};
y = {2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0};


This task is intended as a subtask for Measure relative performance of sorting algorithms implementations.

## AArch64 Assembly

Works with: as version Raspberry Pi 3B version Buster 64 bits
/* ARM assembly AARCH64 Raspberry PI 3B */
/*  program areaPlot64.s   */

/*******************************************/
/* Constantes file                         */
/*******************************************/
/* for this file see task include a file in language AArch64 assembly*/
.include "../includeConstantesARM64.inc"
.equ HAUTEUR, 22
.equ LARGEUR, 50
.equ MARGEGAUCHE, 10

/*******************************************/
/* Structures                               */
/********************************************/
/* structure  for points  */
.struct  0
point_posX:
.struct  point_posX + 8
point_posY:
.struct  point_posY + 8
point_end:
/*******************************************/
/* Initialized data                        */
/*******************************************/
.data
szMessError:        .asciz "Number of points too large !! \n"
szCarriageReturn:  .asciz "\n"
szMessMovePos:      .ascii "\033["          // cursor position
posY:                .byte '0'
.byte '6'
.ascii ";"
posX:                .byte '0'
.byte '3'
.asciz "H*"
szMessEchelleX:     .asciz  "Y^ X="
szClear1:                  .byte 0x1B
.byte 'c'        // other console clear
.byte 0
szMessPosEch:      .ascii "\033["           // scale cursor position
posY1:                .byte '0'
.byte '0'
.ascii ";"
posX1:                .byte '0'
.byte '0'
.asciz "H"

//x = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
//y = {2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0};

/* areas points  */
.quad 27     //    Data * 10 for integer operation
/*******************************************/
/* UnInitialized data                      */
/*******************************************/
.bss
sZoneConv:       .skip 30
/*******************************************/
/*  code section                           */
/*******************************************/
.text
.global main
main:                      // entry of program
mov x1,10              // size
mov x2,LARGEUR
mov x3,HAUTEUR
bl plotArea
b 100f

100:                       // standard end of the program
mov x0,  0             // return code
mov x8,EXIT            // request to exit program
svc 0                  // perform the system call

/************************************/
/* create graph                     */
/************************************/
/* x0 contains area points address */
/* x1 contains number points */
/* x2 contains graphic weight  */
/* x3 contains graphic height  */
/* REMARK : no save x9-x20  registers */
plotArea:
stp x2,lr,[sp,-16]!         // save  registers
stp x3,x4,[sp,-16]!         // save  registers
cmp x1,x2
bge 99f
mov x9,x0
mov x4,x1
mov x12,#0                   // indice
mov x13,point_end            // element area size
mov x17,0                    // Y maxi
mov x19,-1                   // Y Mini
1:                               //search mini maxi
ldr x15,[x14,point_posY]
cmp x15,x17
csel x17,x15,x17,hi          // maxi ?
cmp x15,x19
csel x19,x15,x19,lo          // mini ?
cmp x12,x1                   // end ?
blt 1b                       // no -> loop
// compute ratio
udiv x15,x17,x3              // ratio = maxi / height
bl affichageMess
udiv x20,x2,x4               // compute interval X = weight / number points
mov x12,0                    // indice
2:                               // loop begin for display point
madd x14,x12,x13,x9          // charge X coord point
ldr x16,[x14,point_posX]
mul x16,x20,x12              // interval * indice
add x0,x16,MARGEGAUCHE       // + left margin
mov x1,x10                   // conversion ascii and store
bl convPos

ldr x18,[x14,point_posY]              // charge Y coord point
udiv x18,x18,x15             // divide by ratio
sub x0,x3,x18                // inversion position ligne
mov x1,x11                   // conversion ascii and store
bl convPos

ldr x0,qAdrszMessMovePos     // display * at position X,Y
bl affichageMess
cmp x12,x4                   // end ?
blt 2b                       // no -> loop
// display left scale
// display Y Mini
mov x0,0
bl convPos
mov x0,HAUTEUR
bl convPos
bl affichageMess
mov x0,x19
bl conversion10
bl affichageMess
// display Y Maxi
mov x0,0
bl convPos
mov x0,0
bl convPos
bl affichageMess
mov x0,x17
bl conversion10
bl affichageMess
// display average value
mov x0,0
bl convPos
mov x0,HAUTEUR/2
bl convPos
bl affichageMess
lsr x0,x17,#1
bl conversion10
bl affichageMess

// display X scale
mov x0,0
bl convPos
mov x0,HAUTEUR+1
bl convPos
bl affichageMess
bl affichageMess

mov x12,0                       // indice
mov x19,MARGEGAUCHE
10:
udiv x20,x2,x4
bl convPos
mov x0,HAUTEUR+1
bl convPos
bl affichageMess
ldr x0,[x14,point_posX]
bl conversion10
bl affichageMess
cmp x12,x4
blt 10b

bl affichageMess

mov x0,0                    // return code
b 100f
99:                             // error
bl affichageMess
mov x0,-1                   // return code
100:
ldp x3,x4,[sp],16           // restaur  2 registers
ldp x2,lr,[sp],16           // restaur  2 registers
/************************************/
/* conv position in ascii and store at address */
/************************************/
/* x0 contains position */
/* x1 contains string address */
convPos:
stp x2,lr,[sp,-16]!      // save  registers
stp x3,x4,[sp,-16]!      // save  registers
mov x2,10
udiv x3,x0,x2
add x4,x3,48             // convert in ascii
strb w4,[x1]             // store posX
msub x4,x3,x2,x0
strb w4,[x1,1]
100:
ldp x3,x4,[sp],16        // restaur  2 registers
ldp x2,lr,[sp],16        // restaur  2 registers
/********************************************************/
/*        File Include fonctions                        */
/********************************************************/
/* for this file see task include a file in language AArch64 assembly */
.include "../includeARM64.inc"
Output:
1800                                                  *

*

*

*

900
*

*

*
*

27       *    *
Y^ X=    0    1    2    3    4    5    6    7    8    9



## Action!

INCLUDE "D2:REAL.ACT" ;from the Action! Tool Kit

DEFINE PTR="CARD"
DEFINE BUF_SIZE="100"
DEFINE REAL_SIZE="3"

TYPE Settings=[
INT xMin,xMax,xStep,yMin,yMax,yStep
INT xLeft,xRight,yTop,yBottom
INT tickLength]

BYTE ARRAY xs(BUF_SIZE),ys(BUF_SIZE)
BYTE count=[0]

PTR FUNC GetXPtr(BYTE i)
RETURN (xs+3*i)

PTR FUNC GetYPtr(BYTE i)
RETURN (ys+3*i)

REAL POINTER p

p=GetXPtr(count) ValR(xstr,p)
p=GetYPtr(count) ValR(ystr,p)
count==+1
RETURN

PROC InitData()
RETURN

INT FUNC GetXPos(Settings POINTER s INT x)
INT res

res=x*(s.xRight-s.xLeft)/(s.xMax-s.xMin)+s.xLeft
RETURN (res)

INT FUNC GetYPos(Settings POINTER s INT y)
INT res

res=y*(s.yTop-s.yBottom)/(s.yMax-s.yMin)+s.yBottom
RETURN (res)

INT FUNC GetXPosR(Settings POINTER s REAL POINTER x)
REAL nom,denom,div,tmp
INT res

IntToReal(s.xRight-s.xLeft,tmp)
RealMult(tmp,x,nom)
IntToReal(s.xMax-s.xMin,denom)
RealDiv(nom,denom,div)
res=RealToInt(div)+s.xLeft
RETURN (res)

INT FUNC GetYPosR(Settings POINTER s REAL POINTER y)
REAL nom,denom,div,tmp
INT res

IntToReal(s.yBottom-s.yTop,tmp)
RealMult(tmp,y,nom)
IntToReal(s.yMax-s.yMin,denom)
RealDiv(nom,denom,div)
res=-RealToInt(div)+s.yBottom
RETURN (res)

BYTE FUNC AtasciiToInternal(CHAR c)
BYTE c2

c2=c&$7F IF c2<32 THEN RETURN (c+64) ELSEIF c2<96 THEN RETURN (c-32) FI RETURN (c) PROC CharOut(INT x,y CHAR c) BYTE i,j,v PTR addr addr=$E000+AtasciiToInternal(c)*8;
FOR j=0 TO 7
DO
i=8
WHILE i>0
DO
IF v&1 THEN
Plot(x+i,y+j)
FI

v=v RSH 1
i==-1
OD
OD
RETURN

PROC TextOut(INT x,y CHAR ARRAY text)
BYTE i

FOR i=1 TO text(0)
DO
CharOut(x,y,text(i))
x==+8
OD
RETURN

PROC DrawAxes(Settings POINTER s)
INT i,x,y
CHAR ARRAY t(10)

Plot(s.xLeft,s.yTop)
DrawTo(s.xLeft,s.yBottom)
DrawTo(s.xRight,s.yBottom)

FOR i=s.xMin TO s.xMax STEP s.xStep
DO
x=GetXPos(s,i)
Plot(x,s.yBottom)
DrawTo(x,s.yBottom+s.tickLength)
StrI(i,t)
TextOut(x-t(0)*4,s.yBottom+s.tickLength+1,t)
OD

FOR i=s.yMin TO s.yMax STEP s.yStep
DO
y=GetYPos(s,i)
Plot(s.xLeft-s.tickLength,y)
DrawTo(s.xLeft,y)
StrI(i,t)
TextOut(s.xLeft-s.tickLength-1-t(0)*8,y-4,t)
OD
RETURN

PROC DrawPoint(INT x,y)
Plot(x-1,y-1) DrawTo(x+1,y-1)
DrawTo(x+1,y+1) DrawTo(x-1,y+1)
DrawTo(x-1,y-1)
RETURN

PROC DrawSeries(Settings POINTER s)
INT i,x,y,prevX,prevY
REAL POINTER p

FOR i=0 TO count-1
DO
p=GetXPtr(i) x=GetXPosR(s,p)
p=GetYPtr(i) y=GetYPosR(s,p)
DrawPoint(x,y)
IF i>0 THEN
Plot(prevX,prevY)
DrawTo(x,y)
FI
prevX=x prevY=y
OD
RETURN

PROC DrawPlot(Settings POINTER s)
DrawAxes(s)
DrawSeries(s)
RETURN

PROC Main()
BYTE CH=$02FC,COLOR1=$02C5,COLOR2=$02C6 Settings s Graphics(8+16) Color=1 COLOR1=$0C
COLOR2=$02 InitData() s.xMin=0 s.xMax=9 s.xStep=1 s.yMin=0 s.yMax=180 s.yStep=20 s.xLeft=30 s.xRight=311 s.yTop=8 s.yBottom=177 s.tickLength=3 DrawPlot(s) DO UNTIL CH#$FF OD
CH=$FF RETURN Output: ## Ada Like C, this is often outsourced to another program like gnuplot, but is also possible with GtkAda. Library: GtkAda with Gtk.Main; with Gtk.Window; use Gtk.Window; with Gtk.Widget; use Gtk.Widget; with Gtk.Handlers; use Gtk.Handlers; with Glib; use Glib; with Gtk.Extra.Plot; use Gtk.Extra.Plot; with Gtk.Extra.Plot_Data; use Gtk.Extra.Plot_Data; with Gtk.Extra.Plot_Canvas; use Gtk.Extra.Plot_Canvas; with Gtk.Extra.Plot_Canvas.Plot; use Gtk.Extra.Plot_Canvas.Plot; procedure PlotCoords is package Handler is new Callback (Gtk_Widget_Record); Window : Gtk_Window; Plot : Gtk_Plot; PCP : Gtk_Plot_Canvas_Plot; Canvas : Gtk_Plot_Canvas; PlotData : Gtk_Plot_Data; x, y, dx, dy : Gdouble_Array_Access; procedure ExitMain (Object : access Gtk_Widget_Record'Class) is begin Destroy (Object); Gtk.Main.Main_Quit; end ExitMain; begin x := new Gdouble_Array'(0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0); y := new Gdouble_Array'(2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0); Gtk.Main.Init; Gtk_New (Window); Set_Title (Window, "Plot coordinate pairs with GtkAda"); Gtk_New (PlotData); Set_Points (PlotData, x, y, dx, dy); Gtk_New (Plot); Add_Data (Plot, PlotData); Autoscale (Plot); Show (PlotData); Hide_Legends (Plot); Gtk_New (PCP, Plot); Show (Plot); Gtk_New (Canvas, 500, 500); Show (Canvas); Put_Child (Canvas, PCP, 0.15, 0.15, 0.85, 0.85); Add (Window, Canvas); Show_All (Window); Handler.Connect (Window, "destroy", Handler.To_Marshaller (ExitMain'Access)); Gtk.Main.Main; end PlotCoords;  ## ALGOL 68 Works with: ALGOL 68 version Revision 1 - extensions to standard used - PRAGMA READ and Currying Works with: ALGOL 68G version Any - tested with release algol68g-2.4.1. File: Plot_coordinate_pairs.a68 #!/usr/bin/algol68g-full --script # # -*- coding: utf-8 -*- # PR READ "prelude/errata.a68" PR; PR READ "prelude/exception.a68" PR; PR READ "prelude/math_lib.a68" PR; CO REQUIRED BY "prelude/graph_2d.a68" CO MODE GREAL= REAL; # single precision # FORMAT greal repr =$g(-3,0)$; PR READ "prelude/graph_2d.a68" PR; []REAL x = (0, 1, 2, 3, 4, 5, 6, 7, 8, 9); []REAL y = (2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0); test:( REF GRAPHDD test graph = INIT LOC GRAPHDD; type OF window OF test graph := "gif"; # or gif, ps, X, pnm etc # title OF test graph := "Plot coordinate pairs"; sub title OF test graph := "Algol68"; interval OF (axis OF test graph)[x axis] := (0, 8); label OF (axis OF test graph)[x axis] := "X axis"; interval OF (axis OF test graph)[y axis] := (0, 200); label OF (axis OF test graph)[y axis] := "Y axis"; PROC curve = (POINTYIELD yield)VOID: FOR i TO UPB x DO yield((x[i],y[i])) OD; (begin curve OF (METHODOF test graph))(~); (add curve OF (METHODOF test graph))(curve, (red,solid)); (end curve OF (METHODOF test graph))(~) ); PR READ "postlude/exception.a68" PR ## AutoHotkey Image - Link, since uploads seem to be disabled currently. Works with: AutoHotkey_L (AutoHotkey1.1+) Library: GDIP #SingleInstance, Force #NoEnv SetBatchLines, -1 OnExit, Exit FileOut := A_Desktop "\MyNewFile.png" Font := "Arial" x := [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] y := [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0] ; Uncomment if Gdip.ahk is not in your standard library ; #Include, Gdip.ahk if (!pToken := Gdip_Startup()) { MsgBox, 48, Gdiplus error!, Gdiplus failed to start. Please ensure you have Gdiplus on your system. ExitApp } If (!Gdip_FontFamilyCreate(Font)) { MsgBox, 48, Font error!, The font you have specified does not exist on your system. ExitApp } pBitmap := Gdip_CreateBitmap(900, 900) , G := Gdip_GraphicsFromImage(pBitmap) , Gdip_SetSmoothingMode(G, 4) , pBrush := Gdip_BrushCreateSolid(0xff000000) , Gdip_FillRectangle(G, pBrush, -3, -3, 906, 906) , Gdip_DeleteBrush(pBrush) , pPen1 := Gdip_CreatePen(0xffffcc00, 2) , pPen2 := Gdip_CreatePen(0xffffffff, 2) , pPen3 := Gdip_CreatePen(0xff447821, 1) , pPen4 := Gdip_CreatePen(0xff0066ff, 2) , Gdip_DrawLine(G, pPen2, 50, 50, 50, 850) , Gdip_DrawLine(G, pPen2, 50, 850, 850, 850) , FontOptions1 := "x0 y870 Right cbbffffff r4 s16 Bold" , Gdip_TextToGraphics(G, 0, FontOptions1, Font, 40, 20) Loop, % x.MaxIndex() - 1 { Offset1 := 50 + (x[A_Index] * 80) , Offset2 := Offset1 + 80 , Gdip_DrawLine(G, pPen1, Offset1, 850 - (y[A_Index] * 4), Offset1 + 80, 850 - (y[A_Index + 1] * 4)) } Loop, % x.MaxIndex() { Offset1 := 50 + ((A_Index - 1) * 80) , Offset2 := Offset1 + 80 , Offset3 := 45 + (x[A_Index] * 80) , Offset4 := 845 - (y[A_Index] * 4) , Gdip_DrawLine(G, pPen2, 45, Offset1, 55, Offset1) , Gdip_DrawLine(G, pPen2, Offset2, 845, Offset2, 855) , Gdip_DrawLine(G, pPen3, 50, Offset1, 850, Offset1) , Gdip_DrawLine(G, pPen3, Offset2, 50, Offset2, 850) , Gdip_DrawLine(G, pPen4, Offset3, Offset4, Offset3 + 10, Offset4 + 10) , Gdip_DrawLine(G, pPen4, Offset3, Offset4 + 10, Offset3 + 10, Offset4) , FontOptions1 := "x0 y" (Offset1 - 7) " Right cbbffffff r4 s16 Bold" , FontOptions2 := "x" (Offset2 - 7) " y870 Left cbbffffff r4 s16 Bold" , Gdip_TextToGraphics(G, 220 - (A_Index * 20), FontOptions1, Font, 40, 20) , Gdip_TextToGraphics(G, A_Index, FontOptions2, Font, 40, 20) } Gdip_DeletePen(pPen1) , Gdip_DeletePen(pPen2) , Gdip_DeletePen(pPen3) , Gdip_DeletePen(pPen4) , Gdip_SaveBitmapToFile(pBitmap, FileOut) , Gdip_DisposeImage(pBitmap) , Gdip_DeleteGraphics(G) Run, % FileOut Exit: Gdip_Shutdown(pToken) ExitApp  ## BBC BASIC  DIM x(9), y(9) x() = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 y() = 2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0 ORIGIN 100,100 VDU 23,23,2;0;0;0; VDU 5 FOR x = 1 TO 9 GCOL 7 : LINE 100*x,720,100*x,0 GCOL 0 : PLOT 0,-10,-4 : PRINT ; x ; NEXT FOR y = 20 TO 180 STEP 20 GCOL 7 : LINE 900,4*y,0,4*y GCOL 0 : PLOT 0,-212,20 : PRINT y ; NEXT LINE 0,0,0,720 LINE 0,0,900,0 GCOL 4 FOR i% = 0 TO 9 IF i%=0 THEN MOVE 100*x(i%),4*y(i%) ELSE DRAW 100*x(i%),4*y(i%) ENDIF NEXT  ## C We could use the suite provided by Raster graphics operations, but those functions lack a facility to draw text. Library: libplot #include <stdio.h> #include <stdlib.h> #include <math.h> #include <plot.h> #define NP 10 double x[NP] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}; double y[NP] = {2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0}; void minmax(double *x, double *y, double *minx, double *maxx, double *miny, double *maxy, int n) { int i; *minx = *maxx = x[0]; *miny = *maxy = y[0]; for(i=1; i < n; i++) { if ( x[i] < *minx ) *minx = x[i]; if ( x[i] > *maxx ) *maxx = x[i]; if ( y[i] < *miny ) *miny = y[i]; if ( y[i] > *maxy ) *maxy = y[i]; } } /* likely we must play with this parameter to make the plot looks better when using different set of data */ #define YLAB_HEIGHT_F 0.1 #define XLAB_WIDTH_F 0.2 #define XDIV (NP*1.0) #define YDIV (NP*1.0) #define EXTRA_W 0.01 #define EXTRA_H 0.01 #define DOTSCALE (1.0/150.0) #define MAXLABLEN 32 #define PUSHSCALE(X,Y) pl_fscale((X),(Y)) #define POPSCALE(X,Y) pl_fscale(1.0/(X), 1.0/(Y)) #define FMOVESCALE(X,Y) pl_fmove((X)/sx, (Y)/sy) int main() { int plotter, i; double minx, miny, maxx, maxy; double lx, ly; double xticstep, yticstep, nx, ny; double sx, sy; char labs[MAXLABLEN+1]; plotter = pl_newpl("png", NULL, stdout, NULL); if ( plotter < 0 ) exit(1); pl_selectpl(plotter); if ( pl_openpl() < 0 ) exit(1); /* determines minx, miny, maxx, maxy */ minmax(x, y, &minx, &maxx, &miny, &maxy, NP); lx = maxx - minx; ly = maxy - miny; pl_fspace(floor(minx) - XLAB_WIDTH_F * lx, floor(miny) - YLAB_HEIGHT_F * ly, ceil(maxx) + EXTRA_W * lx, ceil(maxy) + EXTRA_H * ly); /* compute x,y-ticstep */ xticstep = (ceil(maxx) - floor(minx)) / XDIV; yticstep = (ceil(maxy) - floor(miny)) / YDIV; pl_flinewidth(0.25); /* compute scale factors to adjust aspect */ if ( lx < ly ) { sx = lx/ly; sy = 1.0; } else { sx = 1.0; sy = ly/lx; } pl_erase(); /* a frame... */ pl_fbox(floor(minx), floor(miny), ceil(maxx), ceil(maxy)); /* labels and "tics" */ pl_fontname("HersheySerif"); for(ny=floor(miny); ny < ceil(maxy); ny += yticstep) { pl_fline(floor(minx), ny, ceil(maxx), ny); snprintf(labs, MAXLABLEN, "%6.2lf", ny); FMOVESCALE(floor(minx) - XLAB_WIDTH_F * lx, ny); PUSHSCALE(sx,sy); pl_label(labs); POPSCALE(sx,sy); } for(nx=floor(minx); nx < ceil(maxx); nx += xticstep) { pl_fline(nx, floor(miny), nx, ceil(maxy)); snprintf(labs, MAXLABLEN, "%6.2lf", nx); FMOVESCALE(nx, floor(miny)); PUSHSCALE(sx,sy); pl_ftextangle(-90); pl_alabel('l', 'b', labs); POPSCALE(sx,sy); } /* plot data "point" */ pl_fillcolorname("red"); pl_filltype(1); for(i=0; i < NP; i++) { pl_fbox(x[i] - lx * DOTSCALE, y[i] - ly * DOTSCALE, x[i] + lx * DOTSCALE, y[i] + ly * DOTSCALE); } pl_flushpl(); pl_closepl(); }  No one would use the previous code to produce a plot (that looks this way; instead, normally we produce data through a program, then we plot the data using e.g. gnuplot or other powerful tools; the result (with gnuplot and without enhancement) could look like this instead. ### Writing EPS Following code creates a plot in EPS format, with auto scaling and line/symbol/color controls. Plotting function loosely follows Matlab command style. Not thorough by any means, just to give an idea on how this kind of things can be coded. #include <stdio.h> #include <math.h> #include <string.h> #define N 40 double x[N], y[N]; void minmax(double x[], int len, double *base, double *step, int *nstep) { int i; double diff, minv, maxv; *step = 1; minv = maxv = x[0]; for (i = 1; i < len; i++) { if (minv > x[i]) minv = x[i]; if (maxv < x[i]) maxv = x[i]; } if (minv == maxv) { minv = floor(minv); maxv = ceil(maxv); if (minv == maxv) { minv--; maxv++; } } else { diff = maxv - minv; while (*step < diff) *step *= 10; while (*step > diff) *step /= 10; if (*step > diff / 2) *step /= 5; else if (*step > diff / 5) *step /= 2; } *base = floor(minv / *step) * *step; *nstep = ceil(maxv / *step) - floor(minv / *step); } /* writes an eps with 400 x 300 dimention, using 12 pt font */ #define CHARH 12 #define CHARW 6 #define DIMX 398 #define DIMY (300 - CHARH) #define BOTY 20. int plot(double x[], double y[], int len, char *spec) { int nx, ny, i; double sx, sy, x0, y0; char buf[100]; int dx, dy, lx, ly; double ofs_x, ofs_y, grid_x; minmax(x, len, &x0, &sx, &nx); minmax(y, len, &y0, &sy, &ny); dx = -log10(sx); dy = -log10(sy); ly = 0; for (i = 0; i <= ny; i++) { sprintf(buf, "%g\n", y0 + i * sy); if (strlen(buf) > ly) ly = strlen(buf); } ofs_x = ly * CHARW; printf("%%!PS-Adobe-3.0\n%%%%BoundingBox: 0 0 400 300\n" "/TimesRoman findfont %d scalefont setfont\n" "/rl{rlineto}def /l{lineto}def /s{setrgbcolor}def " "/rm{rmoveto}def /m{moveto}def /st{stroke}def\n", CHARH); for (i = 0; i <= ny; i++) { ofs_y = BOTY + (DIMY - BOTY) / ny * i; printf("0 %g m (%*.*f) show\n", ofs_y - 4, ly, dy, y0 + i * sy); if (i) printf("%g %g m 7 0 rl st\n", ofs_x, ofs_y); } printf("%g %g m %g %g l st\n", ofs_x, BOTY, ofs_x, ofs_y); for (i = 0; i <= nx; i++) { sprintf(buf, "%g", x0 + i * sx); lx = strlen(buf); grid_x = ofs_x + (DIMX - ofs_x) / nx * i; printf("%g %g m (%s) show\n", grid_x - CHARW * lx / 2, BOTY - 12, buf); if (i) printf("%g %g m 0 7 rl st\n", grid_x, BOTY); } printf("%g %g m %g %g l st\n", ofs_x, BOTY, grid_x, BOTY); if (strchr(spec, 'r')) printf("1 0 0 s\n"); else if (strchr(spec, 'b')) printf("0 0 1 s\n"); else if (strchr(spec, 'g')) printf("0 1 0 s\n"); else if (strchr(spec, 'm')) printf("1 0 1 s\n"); if (strchr(spec, 'o')) printf("/o { m 0 3 rm 3 -3 rl -3 -3 rl -3 3 rl closepath st} def " ".5 setlinewidth\n"); if (strchr(spec, '-')) { for (i = 0; i < len; i++) { printf("%g %g %s ", (x[i] - x0) / (sx * nx) * (DIMX - ofs_x) + ofs_x, (y[i] - y0) / (sy * ny) * (DIMY - BOTY) + BOTY, i ? "l" : "m"); } printf("st\n"); } if (strchr(spec, 'o')) for (i = 0; i < len; i++) { printf("%g %g o ", (x[i] - x0) / (sx * nx) * (DIMX - ofs_x) + ofs_x, (y[i] - y0) / (sy * ny) * (DIMY - BOTY) + BOTY); } printf("showpage\n%%EOF"); return 0; } int main() { int i; for (i = 0; i < N; i++) { x[i] = (double)i / N * 3.14159 * 6; y[i] = -1337 + (exp(x[i] / 10) + cos(x[i])) / 100; } /* string parts: any of "rgbm": color; "-": draw line; "o": draw symbol */ plot(x, y, N, "r-o"); return 0; }  ## C++ #include <windows.h> #include <string> #include <vector> //-------------------------------------------------------------------------------------------------- using namespace std; //-------------------------------------------------------------------------------------------------- const int HSTEP = 46, MWID = 40, MHEI = 471; const float VSTEP = 2.3f; //-------------------------------------------------------------------------------------------------- class vector2 { public: vector2() { x = y = 0; } vector2( float a, float b ) { x = a; y = b; } void set( float a, float b ) { x = a; y = b; } float x, y; }; //-------------------------------------------------------------------------------------------------- class myBitmap { public: myBitmap() : pen( NULL ), brush( NULL ), clr( 0 ), wid( 1 ) {} ~myBitmap() { DeleteObject( pen ); DeleteObject( brush ); DeleteDC( hdc ); DeleteObject( bmp ); } bool create( int w, int h ) { BITMAPINFO bi; ZeroMemory( &bi, sizeof( bi ) ); bi.bmiHeader.biSize = sizeof( bi.bmiHeader ); bi.bmiHeader.biBitCount = sizeof( DWORD ) * 8; bi.bmiHeader.biCompression = BI_RGB; bi.bmiHeader.biPlanes = 1; bi.bmiHeader.biWidth = w; bi.bmiHeader.biHeight = -h; HDC dc = GetDC( GetConsoleWindow() ); bmp = CreateDIBSection( dc, &bi, DIB_RGB_COLORS, &pBits, NULL, 0 ); if( !bmp ) return false; hdc = CreateCompatibleDC( dc ); SelectObject( hdc, bmp ); ReleaseDC( GetConsoleWindow(), dc ); width = w; height = h; return true; } void clear( BYTE clr = 0 ) { memset( pBits, clr, width * height * sizeof( DWORD ) ); } void setBrushColor( DWORD bClr ) { if( brush ) DeleteObject( brush ); brush = CreateSolidBrush( bClr ); SelectObject( hdc, brush ); } void setPenColor( DWORD c ) { clr = c; createPen(); } void setPenWidth( int w ) { wid = w; createPen(); } void saveBitmap( string path ) { BITMAPFILEHEADER fileheader; BITMAPINFO infoheader; BITMAP bitmap; DWORD wb; GetObject( bmp, sizeof( bitmap ), &bitmap ); DWORD* dwpBits = new DWORD[bitmap.bmWidth * bitmap.bmHeight]; ZeroMemory( dwpBits, bitmap.bmWidth * bitmap.bmHeight * sizeof( DWORD ) ); ZeroMemory( &infoheader, sizeof( BITMAPINFO ) ); ZeroMemory( &fileheader, sizeof( BITMAPFILEHEADER ) ); infoheader.bmiHeader.biBitCount = sizeof( DWORD ) * 8; infoheader.bmiHeader.biCompression = BI_RGB; infoheader.bmiHeader.biPlanes = 1; infoheader.bmiHeader.biSize = sizeof( infoheader.bmiHeader ); infoheader.bmiHeader.biHeight = bitmap.bmHeight; infoheader.bmiHeader.biWidth = bitmap.bmWidth; infoheader.bmiHeader.biSizeImage = bitmap.bmWidth * bitmap.bmHeight * sizeof( DWORD ); fileheader.bfType = 0x4D42; fileheader.bfOffBits = sizeof( infoheader.bmiHeader ) + sizeof( BITMAPFILEHEADER ); fileheader.bfSize = fileheader.bfOffBits + infoheader.bmiHeader.biSizeImage; GetDIBits( hdc, bmp, 0, height, ( LPVOID )dwpBits, &infoheader, DIB_RGB_COLORS ); HANDLE file = CreateFile( path.c_str(), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL ); WriteFile( file, &fileheader, sizeof( BITMAPFILEHEADER ), &wb, NULL ); WriteFile( file, &infoheader.bmiHeader, sizeof( infoheader.bmiHeader ), &wb, NULL ); WriteFile( file, dwpBits, bitmap.bmWidth * bitmap.bmHeight * 4, &wb, NULL ); CloseHandle( file ); delete [] dwpBits; } HDC getDC() const { return hdc; } int getWidth() const { return width; } int getHeight() const { return height; } private: void createPen() { if( pen ) DeleteObject( pen ); pen = CreatePen( PS_SOLID, wid, clr ); SelectObject( hdc, pen ); } HBITMAP bmp; HDC hdc; HPEN pen; HBRUSH brush; void *pBits; int width, height, wid; DWORD clr; }; //-------------------------------------------------------------------------------------------------- class plot { public: plot() { bmp.create( 512, 512 ); } void draw( vector<vector2>* pairs ) { bmp.clear( 0xff ); drawGraph( pairs ); plotIt( pairs ); HDC dc = GetDC( GetConsoleWindow() ); BitBlt( dc, 0, 30, 512, 512, bmp.getDC(), 0, 0, SRCCOPY ); ReleaseDC( GetConsoleWindow(), dc ); //bmp.saveBitmap( "f:\\rc\\plot.bmp" ); } private: void drawGraph( vector<vector2>* pairs ) { HDC dc = bmp.getDC(); bmp.setPenColor( RGB( 240, 240, 240 ) ); DWORD b = 11, c = 40, x; RECT rc; char txt[8]; for( x = 0; x < pairs->size(); x++ ) { MoveToEx( dc, 40, b, NULL ); LineTo( dc, 500, b ); MoveToEx( dc, c, 11, NULL ); LineTo( dc, c, 471 ); wsprintf( txt, "%d", ( pairs->size() - x ) * 20 ); SetRect( &rc, 0, b - 9, 36, b + 11 ); DrawText( dc, txt, lstrlen( txt ), &rc, DT_RIGHT | DT_VCENTER | DT_SINGLELINE ); wsprintf( txt, "%d", x ); SetRect( &rc, c - 8, 472, c + 8, 492 ); DrawText( dc, txt, lstrlen( txt ), &rc, DT_CENTER | DT_VCENTER | DT_SINGLELINE ); c += 46; b += 46; } SetRect( &rc, 0, b - 9, 36, b + 11 ); DrawText( dc, "0", 1, &rc, DT_RIGHT | DT_VCENTER | DT_SINGLELINE ); bmp.setPenColor( 0 ); bmp.setPenWidth( 3 ); MoveToEx( dc, 40, 11, NULL ); LineTo( dc, 40, 471 ); MoveToEx( dc, 40, 471, NULL ); LineTo( dc, 500, 471 ); } void plotIt( vector<vector2>* pairs ) { HDC dc = bmp.getDC(); HBRUSH br = CreateSolidBrush( 255 ); RECT rc; bmp.setPenColor( 255 ); bmp.setPenWidth( 2 ); vector<vector2>::iterator it = pairs->begin(); int a = MWID + HSTEP * static_cast<int>( ( *it ).x ), b = MHEI - static_cast<int>( VSTEP * ( *it ).y ); MoveToEx( dc, a, b, NULL ); SetRect( &rc, a - 3, b - 3, a + 3, b + 3 ); FillRect( dc, &rc, br ); it++; for( ; it < pairs->end(); it++ ) { a = MWID + HSTEP * static_cast<int>( ( *it ).x ); b = MHEI - static_cast<int>( VSTEP * ( *it ).y ); SetRect( &rc, a - 3, b - 3, a + 3, b + 3 ); FillRect( dc, &rc, br ); LineTo( dc, a, b ); } DeleteObject( br ); } myBitmap bmp; }; //-------------------------------------------------------------------------------------------------- int main( int argc, char* argv[] ) { ShowWindow( GetConsoleWindow(), SW_MAXIMIZE ); plot pt; vector<vector2> pairs; pairs.push_back( vector2( 0, 2.7f ) ); pairs.push_back( vector2( 1, 2.8f ) ); pairs.push_back( vector2( 2.0f, 31.4f ) ); pairs.push_back( vector2( 3.0f, 38.1f ) ); pairs.push_back( vector2( 4.0f, 58.0f ) ); pairs.push_back( vector2( 5.0f, 76.2f ) ); pairs.push_back( vector2( 6.0f, 100.5f ) ); pairs.push_back( vector2( 7.0f, 130.0f ) ); pairs.push_back( vector2( 8.0f, 149.3f ) ); pairs.push_back( vector2( 9.0f, 180.0f ) ); pt.draw( &pairs ); system( "pause" ); return 0; } //--------------------------------------------------------------------------------------------------  ## Clojure Library: incanter (use '(incanter core stats charts)) (def x (range 0 10)) (def y '(2.7 2.8 31.4 38.1 58.0 76.2 100.5 130.0 149.3 180.0)) (view (xy-plot x y))  Output: ## Delphi Translation of: Go Boost.Process is part of DelphiBoostLib. program Plot_coordinate_pairs; {$APPTYPE CONSOLE}

uses
System.SysUtils,
Boost.Process;

var
x: TArray<Integer>;
y: TArray<Double>;

begin
x := [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
y := [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0];

var plot := TPipe.Create('gnuplot -p', True);
plot.WriteA('unset key; plot ''-'''#10);
for var i := 0 to High(x) do
plot.WriteA(format('%d %f'#10, [x[i], y[i]]));
plot.writeA('e'#10);

writeln('Press enter to close');
plot.Kill;
plot.Free;
end.


## EasyLang

x[] = [ 0 1 2 3 4 5 6 7 8 9 ]
y[] = [ 2.7 2.8 31.4 38.1 58.0 76.2 100.5 130.0 149.3 180.0 ]
#
clear
linewidth 0.5
move 10 97
line 10 5
line 95 5
textsize 3
n = len x[]
m = 0
for i = 1 to n
if y[i] > m
m = y[i]
.
.
linewidth 0.1
sty = m div 9
for i range0 10
move 2 4 + i * 10
text i * sty
move 10 5 + i * 10
line 95 5 + i * 10
.
stx = x[n] div 9
for i range0 10
move i * 9 + 10 1
text i * stx
move i * 9 + 10 5
line i * 9 + 10 97
.
color 900
linewidth 0.5
for i = 1 to n
x = x[i] * 9 / stx + 10
y = y[i] / sty * 10 + 5
line x y
.


## EchoLisp

Resulting image here.

(lib 'plot)

(define ys #(2.7 2.8 31.4 38.1 58.0 76.2 100.5 130.0 149.3 180.0) )
(define (f n) [ys n])

(plot-sequence f 9)
→ (("x:auto" 0 9) ("y:auto" 2 198))
(plot-grid 1 20)
(plot-text " Rosetta plot coordinate pairs" 0 10 "white")


## Erlang

Using Eplot to produce PNG.

-module( plot_coordinate_pairs ).

Xs = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9],
Ys = [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0],
File = "plot_coordinate_pairs",
to_png_file( File, Xs, Ys ).

to_png_file( File, Xs, Ys ) ->
PNG = egd_chart:graph( [{File, lists:zip(Xs, Ys)}] ),
file:write_file( File ++ ".png", PNG ).


The result looks like this.

## F#

Using the F# for Visualization library:

#r @"C:\Program Files\FlyingFrog\FSharpForVisualization.dll"

let x = Seq.map float [|0; 1; 2; 3; 4; 5; 6; 7; 8; 9|]
let y = [|2.7; 2.8; 31.4; 38.1; 58.0; 76.2; 100.5; 130.0; 149.3; 180.0|]

open FlyingFrog.Graphics

Plot([Data(Seq.zip x y)], (0.0, 9.0))


## Factor

Works with: Factor version 0.99 2019-01-23
USING: accessors assocs colors.constants kernel sequences ui

chart new { { 0 9 } { 0 180 } } >>axes
line new COLOR: blue >>color
9 <iota> { 2.7 2.8 31.4 38.1 58 76.2 100.5 130 149.3 180 } zip


## Fōrmulæ

Fōrmulæ programs are not textual, visualization/edition of programs is done showing/manipulating structures but not text. Moreover, there can be multiple visual representations of the same program. Even though it is possible to have textual representation —i.e. XML, JSON— they are intended for storage and transfer purposes more than visualization and edition.

Programs in Fōrmulæ are created/edited online in its website.

In this page you can see and run the program(s) related to this task and their results. You can also change either the programs or the parameters they are called with, for experimentation, but remember that these programs were created with the main purpose of showing a clear solution of the task, and they generally lack any kind of validation.

Solution

## FreeBASIC

Translation of: Liberty BASIC

### Text mode

Dim As Integer i, x(9), y(9)
For i = 0 To 9
x(i) = i
Next i

y(0) = 2.7
y(1) = 2.8
y(2) = 31.4
y(3) = 38.1
y(4) = 58.0
y(5) = 76.2
y(6) = 100.5
y(7) = 130.0
y(8) = 149.3
y(9) = 180.0

Locate 22, 4
For i = 0 To 9
Locate 22, ((i * 4) + 2) : Print i
Next i

For i = 0 To 20 Step 2
Locate (21 - i), 0 : Print (i * 10)
Next i

Color 14
For i = 0 To 9
Locate (21 - (y(i)/ 10)), (x(i) * 4) + 2 : Print "."
Next i
Sleep

## gnuplot

unset key  # Only one data set, so the key is uninformative

plot '-'   # '-' can be replaced with a filename, to read data from that file.
0   2.7
1   2.8
2  31.4
3  38.1
4  68.0
5  76.2
6 100.5
7 130.0
8 149.3
9 180.0
e


## Go

### gnuplot

Output is the same as for the gnuplot example on this page.

A program can of course supply commands and data to gnuplot as prepared files. For the spirit of controlling plotting with the native language however, this example shows how commands and data can be prepared programatically and supplied to gnuplot through stdin.

package main

import (
"fmt"
"log"
"os/exec"
)

var (
x = []int{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
y = []float64{2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0}
)

func main() {
g := exec.Command("gnuplot", "-persist")
w, err := g.StdinPipe()
if err != nil {
log.Fatal(err)
}
if err = g.Start(); err != nil {
log.Fatal(err)
}
fmt.Fprintln(w, "unset key; plot '-'")
for i, xi := range x {
fmt.Fprintf(w, "%d %f\n", xi, y[i])
}
fmt.Fprintln(w, "e")
w.Close()
g.Wait()
}


### gonum/plot

Library: gonum/plot
package main

import (
"log"

"github.com/gonum/plot"
"github.com/gonum/plot/plotter"
"github.com/gonum/plot/plotutil"
"github.com/gonum/plot/vg"
)

var (
x = []int{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
y = []float64{2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0}
)

func main() {
pts := make(plotter.XYs, len(x))
for i, xi := range x {
pts[i] = struct{ X, Y float64 }{float64(xi), y[i]}
}
p, err := plot.New()
if err != nil {
log.Fatal(err)
}
if err = plotutil.AddScatters(p, pts); err != nil {
log.Fatal(err)
}
if err := p.Save(3*vg.Inch, 3*vg.Inch, "points.svg"); err != nil {
log.Fatal(err)
}
}


## Groovy

Using JFreeChart and Groovy Swing Builder

import groovy.swing.SwingBuilder
import javax.swing.JFrame
import org.jfree.chart.ChartFactory
import org.jfree.chart.ChartPanel
import org.jfree.data.xy.XYSeries
import org.jfree.data.xy.XYSeriesCollection
import org.jfree.chart.plot.PlotOrientation

def chart = {
x = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
y = [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0]

def series = new XYSeries('plots')
[x, y].transpose().each { x, y -> series.add x, y }

def labels = ["Plot Demo", "X", "Y"]
def data = new XYSeriesCollection(series)
def options = [false, true, false]

def chart = ChartFactory.createXYLineChart(*labels, data, PlotOrientation.VERTICAL, *options)
new ChartPanel(chart)
}

new SwingBuilder().edt {
frame(title:'Plot coordinate pairs', defaultCloseOperation:JFrame.EXIT_ON_CLOSE, pack:true, show:true) {
widget(chart())
}
}


gnuplot is a package from HackageDB.

import Graphics.Gnuplot.Simple

pnts = [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0]

doPlot = plotPathStyle [ ( Title "plotting dots" )]
(PlotStyle Points (CustomStyle []))  (zip [0..] pnts)


## HicEst

REAL :: n=10, x(n), y(n)

x = (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)
y = (2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0)

WINDOW(WINdowhandle=wh, Width=-300, Height=-300, X=1, TItle='Rosetta')
AXIS(WINdowhandle=wh, Title='x values', Yaxis, Title='y values')
LINE(X=x, Y=y, SymbolDiameter=2)

## Icon and Unicon

link printf,numbers

procedure main()
x := [0., 1., 2., 3., 4., 5., 6., 7., 8., 9.]
y := [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0]
Plot(x,y,600,400)
end

$define POINTR 2 # Point Radius$define POINTC "red"                   # Point Colour
$define GRIDC "grey" # grid colour$define AXISC  "black"                 # axis/label colour
$define BORDER 60 # per side border$define TICKS  5.                      # grid ticks per axis
$define AXISFH 20 # font height for axis labels procedure Plot(x,y,cw,ch) /cw := 700 # default dimensions /ch := 400 uw := cw-BORDER*2 # usable dimensions uh := ch-BORDER*2 wparms := ["Plot","g", sprintf("size=%d,%d",cw,ch), "bg=white"] # base window parms dx := sprintf("dx=%d",BORDER) # grid origin dy := sprintf("dy=%d",BORDER) &window := open!wparms | stop("Unable to open window") X := scale(x,uw) # scale data to usable space Y := scale(y,uh,"invert") WAttrib(dx,dy) # set origin=grid & draw grid every x := (X.tickfrom to X.tickto by X.tick) * X.tickscale do { if x = 0 then Fg(AXISC) else Fg(GRIDC) DrawLine(x,Y.tickfrom*Y.tickscale,x,Y.tickto*Y.tickscale) } every y := (Y.tickfrom to Y.tickto by Y.tick) * Y.tickscale do { if y = uh then Fg(AXISC) else Fg(GRIDC) DrawLine(X.tickfrom*X.tickscale,y,X.tickto*X.tickscale,y) } Fg(POINTC) # draw data points .... every i := 1 to *X.scaled do FillCircle(X.scaled[i],Y.scaled[i],POINTR) Fg(AXISC) # label grid WAttrib(dx,"dy=0") # label X axis Font(sprintf("Helvetica,%d",AXISFH)) ytxt := ch-BORDER+1+(WAttrib("ascent") - WAttrib("descent"))/2 every x := X.tickscale * (xv := X.tickfrom to X.tickto by X.tick) do DrawString(x - TextWidth(xv)/2, ytxt + integer(AXISFH*1.5),xv) WAttrib("dx=0",dy) # label Y axis every y := Y.tickscale * (yv := Y.tickfrom to Y.tickto by Y.tick) do DrawString(BORDER/2 - TextWidth(yv)/2, ytxt - BORDER - y,yv) WriteImage(sprintf("PlotPoints-%d.gif",&now)) # save image WAttrib("dx=0","dy=0") # close off nicely Font("Helvetica,10") DrawString(10,ch-5,"Right click to exit") until Event() == &rpress # wait for left mouse button close(&window) end record scaledata(low,high,range,pix,raw,scaled,tick,tickfrom,tickto,tickscale) procedure scale(data,pix,opts[]) P :=scaledata( pmin := min!data, pmax := max!data, prange := real(pmax-pmin), pix, data,q :=[]) /ticks := TICKS P.tick := ceil(prange/(10^(k:=floor(log(prange,10))))*(10^k)/ticks) P.tickfrom := P.tick*floor(pmin/P.tick) P.tickto := P.tick*ceil(pmax/P.tick) P.tickscale := real(pix)/(P.tickto-P.tickfrom) every put(q,integer((!data-P.tickfrom)*P.tickscale)) if !opts == "invert" then # invert is for y every q[i := 1 to *q] := pix - q[i] return P end  ## J Library: plot require 'plot' X=: i.10 Y=: 2.7 2.8 31.4 38.1 58.0 76.2 100.5 130.0 149.3 180.0 'dot; pensize 2.4' plot X;Y  If you eliminate the left argument to plot, the dots will be connected instead of being isolated. ## Java  import java.awt.*; import java.awt.event.*; import java.awt.geom.*; import javax.swing.JApplet; import javax.swing.JFrame; public class Plot2d extends JApplet { double[] xi; double[] yi; public Plot2d(double[] x, double[] y) { this.xi = x; this.yi = y; } public static double max(double[] t) { double maximum = t[0]; for (int i = 1; i < t.length; i++) { if (t[i] > maximum) { maximum = t[i]; } } return maximum; } public static double min(double[] t) { double minimum = t[0]; for (int i = 1; i < t.length; i++) { if (t[i] < minimum) { minimum = t[i]; } } return minimum; } public void init() { setBackground(Color.white); setForeground(Color.white); } public void paint(Graphics g) { Graphics2D g2 = (Graphics2D) g; g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); g2.setPaint(Color.black); int x0 = 70; int y0 = 10; int xm = 670; int ym = 410; int xspan = xm - x0; int yspan = ym - y0; double xmax = max(xi); double xmin = min(xi); double ymax = max(yi); double ymin = min(yi); g2.draw(new Line2D.Double(x0, ym, xm, ym)); g2.draw(new Line2D.Double(x0, ym, x0, y0)); for (int j = 0; j < 5; j++) { int interv = 4; g2.drawString("" + (j * (xmax - xmin) / interv + xmin), j * xspan / interv + x0 - 10, ym + 20); g2.drawString("" + (j * (ymax - ymin) / interv + ymin), x0 - 20 - (int) (9 * Math.log10(ymax)), ym - j * yspan / interv + y0 - 5); g2.draw(new Line2D.Double(j * xspan / interv + x0, ym, j * xspan / interv + x0, ym + 5)); g2.draw(new Line2D.Double(x0 - 5, j * yspan / interv + y0, x0, j * yspan / interv + y0)); } for (int i = 0; i < xi.length; i++) { int f = (int) ((xi[i] - xmin) * xspan / (xmax - xmin)); int h = (int) (((ymax - ymin) - (yi[i] - ymin)) * yspan / (ymax - ymin)); g2.drawString("o", x0 + f - 3, h + 14); } for (int i = 0; i < xi.length - 1; i++) { int f = (int) ((xi[i] - xmin) * xspan / (xmax - xmin)); int f2 = (int) ((xi[i + 1] - xmin) * xspan / (xmax - xmin)); int h = (int) (((ymax - ymin) - (yi[i] - ymin)) * yspan / (ymax - ymin)); int h2 = (int) (((ymax - ymin) - (yi[i + 1] - ymin)) * yspan / (ymax - ymin)); g2.draw(new Line2D.Double(f + x0, h + y0, f2 + x0, h2 + y0)); } } public static void main(String args[]) { JFrame f = new JFrame("ShapesDemo2D"); f.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } }); double[] r = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}; double[] t = {2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.09}; JApplet applet = new Plot2d(r, t); f.getContentPane().add("Center", applet); applet.init(); f.pack(); f.setSize(new Dimension(720, 480)); f.show(); } }  ## jq Using R (non-interactive mode) Works with: jq version 1.4 jq is designed to interoperate with other tools, and in this section we illustrate how jq can be used with R in a simple pipeline: jq will produce a stream of CSV data that will be piped into R operating in non-interactive mode. Assuming the jq and R programs are respectively in plot.jq and plot.R, the pipeline would look like this: jq -n -M -r -f plot.jq | R CMD BATCH plot.R  The above would produce the plot as a .pdf file. plot.jq # NOTE: This definition of transpose can be omitted # if your version of jq includes transpose as a builtin. # # transpose a possibly jagged matrix, quickly; # rows are padded with nulls so the result is always rectangular. def transpose: if . == [] then [] else . as$in
| (map(length) | max) as $max | length as$length
| reduce range(0; $max) as$j
([]; . + [reduce range(0;$length) as$i ([]; . + [ $in[$i][$j] ] )] ) end; def x: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]; def y: [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0]; def plot(x;y): "A,B", ( [x,y] | transpose | map( @csv ) | .[]); plot(x;y) plot.R mydata <- read.table( file("stdin"), header=TRUE, sep=",") x = mydata$A                        # x-axis
y = mydata$B # y-axis plot(x, y, # plot the variables main="Scatterplot Example", xlab="x-axis label", # x-axis label ylab="y-axis label" ) # y-axis label  ## Julia Using Plots library with PlotlyJS as backend: using Plots plotlyjs() x = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] y = [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0] p = scatter(x, y) savefig(p, "/tmp/testplot.png")  ## Kotlin Library: JFreeChart Translation of: Groovy // Version 1.2.31 import org.jfree.chart.ChartFactory import org.jfree.chart.ChartPanel import org.jfree.data.xy.XYSeries import org.jfree.data.xy.XYSeriesCollection import org.jfree.chart.plot.PlotOrientation import javax.swing.JFrame import javax.swing.SwingUtilities import java.awt.BorderLayout fun main(args: Array<String>) { val x = intArrayOf(0, 1, 2, 3, 4, 5, 6, 7, 8, 9) val y = doubleArrayOf( 2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0 ) val series = XYSeries("plots") (0 until x.size).forEach { series.add(x[it], y[it]) } val labels = arrayOf("Plot Demo", "X", "Y") val data = XYSeriesCollection(series) val options = booleanArrayOf(false, true, false) val orient = PlotOrientation.VERTICAL val chart = ChartFactory.createXYLineChart( labels[0], labels[1], labels[2], data, orient, options[0], options[1], options[2] ) val chartPanel = ChartPanel(chart) SwingUtilities.invokeLater { val f = JFrame() with(f) { defaultCloseOperation = JFrame.EXIT_ON_CLOSE add(chartPanel, BorderLayout.CENTER) title = "Plot coordinate pairs" isResizable = false pack() setLocationRelativeTo(null) isVisible = true } } }  Output: Similar to Groovy entry.  ## Lambdatalk 1) define X & Y: {def X 0 1 2 3 4 5 7 8 9} -> X {def Y 2.7 2.8 31.4 38.1 58.0 76.2 100.5 130.0 149.3 180.0} -> Y 2) define a function returning a sequence of SVG points {def curve {lambda {:curve :kx :ky} {S.map {{lambda {:curve :kx :ky :i} {* :kx {S.get :i {{car :curve}}}} {* :ky {S.get :i {{cdr :curve}}}} } :curve :kx :ky} {S.serie 0 {- {S.length {X}} 1}} }}} 3) draw a polyline in a SVG context {svg {@ width="580" height="300" style="background:#eee"} {g {AXES 580 300} {polyline {@ points="{curve {cons X Y} 30 0.9}" stroke="#000" fill="transparent" stroke-width="1"}} }} where {def AXES {lambda {:w :h} {@ transform="translate({/ :w 2},{/ :h 2}) scale(1,-1)"} {line {@ x1="-{/ :w 2}:w" y1="0" x2="{/ :w 2}" y2="0" stroke="red" fill="transparent"}} {line {@ x1="0" y1="-{/ :h 2}" x2="0" y2="{/ :h 2}" stroke="green" fill="transparent"}} }} 4) the result can be seen in http://lambdaway.free.fr/lambdawalks/?view=plot4  ## Liberty BASIC First version writes directly to LB's console window.  'Plotting coordinate pairs MainWin - Style For i = 0 To 9 x(i) = i Next i y(0) = 2.7 y(1) = 2.8 y(2) = 31.4 y(3) = 38.1 y(4) = 58.0 y(5) = 76.2 y(6) = 100.5 y(7) = 130.0 y(8) = 149.3 y(9) = 180.0 Locate 4, 22 For i = 0 To 9 Locate ((i * 4) + 2), 22 Print i Next i For i = 0 To 20 Step 2 Locate 0, (21 - i) Print (i * 10) Next i For i = 0 To 9 Locate (x(i) * 4) + 2, (21 - (y(i)/ 10)) Print "." Next i End The second version uses the more typical graphic window approach, and is written to enable easy adaptation to other data sets. nomainwin DATA 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 DATA 2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0 For i = 0 To 9 READ tmp: x( i) = tmp Next i For i = 0 To 9 READ tmp: y( i) = tmp Next i 'Plotting coordinate pairs WindowHeight = 500 WindowWidth = 430 Open "Plot coordinate pairs" For Graphics_nsb_nf As #gwin #gwin "trapclose [quit.gwin]" #gwin "Color Black; Down" '25, 418 is 0,0 global offsetX, offsetY, scaleX, scaleY offsetX = 25: offsetY = 418 scaleX = 40: scaleY = 2 maxX = 9: maxY = 200 #gwin "line "; sx( maxX);" "; sy( 0);" "; sx( 0); " "; sy( 0) #gwin "goto "; sx( 0); " "; sy( maxY) For x = 0 To 9 #gwin "place ";sx(x);" ";sy(0) #gwin "Go -18" #gwin "|"; x Next #gwin "turn 90" For y = 0 To 200 Step 20 #gwin "place ";sx(0);" ";sy(y) #gwin "Go -5" #gwin "place ";0;" ";sy(y) #gwin "|"; y Next #gwin "size 3" For i = 0 To 9 #gwin "set ";sx(x(i));" ";sy(y(i)) Next i #gwin "Flush" Wait [quit.gwin] Close #gwin End 'x, y to screen x, y function sx(x) sx = offsetX +x*scaleX end function function sy(y) sy = offsetY-y*scaleY 'y is inverted end function ## LiveCode Displaying the plot with vector graphics on plotGraphic local tCoordinates local x = "0, 1, 2, 3, 4, 5, 6, 7, 8, 9" local y = "2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0" if there is a graphic "graph" then delete graphic "graph" repeat with i = 1 to the number of items of x put item i of x into item 1 of line i of tCoordinates put item i of y into item 2 of line i of tCoordinates end repeat create graphic "graph" set the style of graphic "graph" to "polygon" set the points of graphic "graph" to tCoordinates repeat with i = 1 to the number of lines of tCoordinates put the top of grc "graph" + the height of grc "graph" - item 2 of line i of tCoordinates into item 2 of line i of tCoordinates end repeat set the points of graphic "graph" to tCoordinates set the height of graphic "graph" to 200 set the width of graphic "graph" to 300 set the loc of grc "graph" to the loc of this card end plotGraphic Displaying the plot with the Line Graph widget on plotLineGraph local tCoordinates local x = "0, 1, 2, 3, 4, 5, 6, 7, 8, 9" local y = "2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0" if there is a widget "graph" then delete widget "graph" repeat with i = 1 to the number of items of x put item i of x into item 1 of line i of tCoordinates put item i of y into item 2 of line i of tCoordinates end repeat create widget "graph" as "com.livecode.widget.linegraph" set the graphData of widget "graph" to tCoordinates set the height of widget "graph" to 250 set the width of widget "graph" to 350 set the loc of widget "graph" to the loc of this card end plotLineGraph ## Lua Library: LÖVE w_width = love.graphics.getWidth() w_height = love.graphics.getHeight() x = {0,1,2,3,4,5,6,7,8,9} y = {2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0} origin = {24,24} points = {} x_unit = w_width/x[10]/2 y_unit = w_height/10 --add points to an array properly formatted for the line function for i=1,10,1 do table.insert(points, (x[i]*x_unit) + origin[1]) table.insert(points, (w_height-(y[i]*2)) - origin[2]) end function love.draw() --draw axes and grid love.graphics.setColor(0, 0.8, 0) --draw x axis love.graphics.line(origin[1], w_height-origin[2], w_width, w_height-origin[2]) --draw y axis love.graphics.line(origin[1], w_height-origin[2], origin[1], origin[2]) --draw grid for i=1,20,1 do love.graphics.line(origin[1], (w_height-origin[2])-(i*y_unit), w_width, (w_height-origin[2])-(i*y_unit)) love.graphics.line(origin[1]+(i*x_unit), origin[2], origin[1]+(i*x_unit), w_height-origin[2]) end --draw line plot love.graphics.setColor(0.8, 0, 0) love.graphics.line(points) --draw labels love.graphics.setColor(0.8, 0.8, 0.8) for i=0,9,1 do --draw x axis labels love.graphics.print(i, (x_unit*i) + origin[1], love.graphics.getHeight()-origin[2]) --draw y axis labels love.graphics.print(i*y_unit/2, origin[1], ((love.graphics.getHeight()-i*y_unit)-origin[2])) end end  ## M2000 Interpreter Last statements used for copy the console screen to clipboard Result image here Module Pairs { \\ written in version 9.5 rev. 13 \\ use Gdi+ antialiasing (not work with Wine in Linux, but we get no error) smooth on Const center=2, right=3, left=1, blue=1, angle=0, dotline=3 Const size9pt=9, size11pt=11 Cls ,0 ' use current background color, set split screen from line 0 Cursor 0,3 Report center, "Coordinate pairs" x = (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) y = (2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0) dx=scale.x/2/len(x) dy=dx 'ratio 1:1 graH=dy*len(x) Basex=scale.x/4 Basey=(scale.y+graH)/2 Move Basex, Basey \\ draw use relative coordinates Draw 0,-graH \\ Step just move graphic cursor Step 0, graH Draw scale.x/2 Step -scale.x/2 \\ scX is 1, not used max=Y#max() \\ Auto scale for Y, using 0 for start of axis Y scY=-graH/((max+5^log(max) ) div 100)/100 \\ make vertical axis using dots with numbers center per dx j=1 For i=basex+dx to basex+dx*x#max() Step dx Move i, basey Step 0, twipsy*10 Legend format$("{0}",array(x,j)), "courier", size9pt, angle, center
Width 1, dotline { draw 0, -graH-twipsy*10,7}
j++
Next i
\\ the same for horizontal axis
HalfTextHeight=Size.y("1","courier", size9pt)/2
For i=basey-dy to basey-dy*x#max() Step dy
Move  basex, i
Step -twipsx*10
Width 1, dotline { draw scale.x/2+twipsx*10,,7}
Move basex-100, i+HalfTextHeight
Legend format$("{0}",(i-basey)/scY), "courier", size9pt, angle, left Next i ex=each(x) : ey=each(y) \\ start from first point. We use Draw to for absolute coordinates Move array(x,0)*dx+Basex, array(y,0)*scy+Basey While ex, ey { Width 2 { Draw to array(ex)*dx+Basex, array(ey)*scy+Basey, blue } } \\ second pass for marks and labels ex=each(x) : ey=each(y) While ex, ey { Move array(ex)*dx+Basex, array(ey)*scy+Basey Step -75, -75 Pen 12 {draw 150: draw 0,150 : draw -150 : draw 0,-150} Pen 13 { Step 200, -200 Legend format$("({0}-{1})",array(ex),array(ey) ), "courier bold", size11pt, angle, right
}
}
\\ screenshot to clipboard
Screenshot$="" Move 0,0 Copy scale.x, scale.y to Screenshot$
Clipboard Screenshot$a$=key$} Pairs ## Maple x := Vector([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]): y := Vector([2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0]): plot(x,y,style="point"); ## Mathematica/Wolfram Language x={0,1,2,3,4,5,6,7,8,9}; y={2.7,2.8,31.4,38.1,58.0,76.2,100.5,130.0,149.3,180.0}; ListPlot[{x, y} // Transpose]  Output: ## MATLAB >> x = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]; >> y = [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0]; >> plot(x,y,'.-')  ## Maxima ".." (m, n) := makelist (i, i, m, n); infix ("..")$
x: 0 .. 9$y:[2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0]$
wxplot2d(['discrete, x, y], [style, [points,5,1,1]], [gnuplot_term, png], [gnuplot_out_file, "qsort-range-10-9.png"])$ ## Nim ### Using gnuplot There exists two libraries providing a Nim interface to “gnuplot” (the GNU plotting program), which are named “gnuplot” and “gnuplotlib”. We have chosen the second one as it is be more complete and more convenient to use. The library launches “gnuplot” which does the plotting. From “gnuplot”, it is possible to save the drawing into a PDF, a SVG or an image (BMP, PNG) file. import gnuplot let x = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] y = [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0] withGnuPlot: plot(x, y, "Coordinate pairs")  ### Using ggplotnim Library: ggplotnim This library doesn’t use an external process to does the plotting. It uses a syntax mostly compliant with “ggplot2” syntax. import ggplotnim let x = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] y = [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0] let df = seqsToDf(x, y) # Build a dataframe. df.ggplot(aes("x", "y")) + ggtitle("Coordinate pairs") + geomLine() + themeOpaque() + ggsave("coordinate_pairs.png")  ## OCaml #load "graphics.cma" open Graphics let round x = int_of_float (floor(x +. 0.5)) let x = [0; 1; 2; 3; 4; 5; 6; 7; 8; 9] and y = [2.7; 2.8; 31.4; 38.1; 58.0; 76.2; 100.5; 130.0; 149.3; 180.0] let () = open_graph ""; List.iter2 (fun x y -> (* scale to fit in the window *) let _x = x * 30 and _y = round(y *. 2.0) in plot _x _y) x y; ignore(wait_next_event [Key_pressed]); close_graph(); ;;  Using the Archimedes library, one can write: module A = Archimedes let y = [|2.7; 2.8; 31.4; 38.1; 58.0; 76.2; 100.5; 130.0; 149.3; 180.0|] let () = let vp = A.init [] in A.Axes.box vp; A.set_color vp A.Color.red; A.Array.y vp y; A.close vp  ## Octave x = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]; y = [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0]; plot(x,y,"o"); pause;  ## Ol ; define input arrays (define x '(0 1 2 3 4 5 6 7 8 9)) (define y '(2.7 2.8 31.4 38.1 58.0 76.2 100.5 130.0 149.3 180.0)) ; render (import (lib gl2)) (glOrtho 0 10 0 200 0 1) (gl:set-renderer (lambda (mouse) (glClear GL_COLOR_BUFFER_BIT) (glColor3f 0 1 0) (glBegin GL_LINE_STRIP) (map glVertex2f x y) (glEnd)))  ## PARI/GP plothraw(vx, vy) ## Perl ### GD::Graph library use GD::Graph::points; @data = ( [0, 1, 2, 3, 4, 5, 6, 7, 8, 9], [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0], );$graph = GD::Graph::points->new(400, 300);
open my $fh, '>', "qsort-range-10-9.png"; binmode$fh;
print $fh$graph->plot(\@data)->png;
close $fh;  ### Imager::Plot library use Imager; use Imager::Plot; @x = (0, 1, 2, 3, 4, 5, 6, 7, 8, 9); @y = (2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0);$plot = Imager::Plot->new(
Width => 400,
Height => 300,
GlobalFont => 'PATH_TO_TTF_FONT',
);
$plot->AddDataSet( X => \@x, Y => \@y, style => { marker => { size => 2, symbol => 'circle', color => Imager::Color->new('red'), }, }, );$img = Imager->new(
xsize => 500,
ysize => 400,
);
$img->box(filled => 1, color => 'white');$plot->Render(Image => $img, Xoff => 50, Yoff => 350);$img->write(file => 'qsort-range-10-9.png');


## Processing

//Aamrun, 26th June 2022

int x[] = {0,   1,    2,    3,    4,    5,     6,     7,     8,     9};
float y[] = {2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0};

size(300,300);
surface.setTitle("Rosetta Plot");

stroke(#ff0000);

for(int i=0;i<x.length;i++){
ellipse(x[i],y[i],3,3);
}


## Phix

Library: Phix/pGUI

Output same as BBC BASIC, you can run this online here.

--
-- demo\rosetta\Plot_coordinate_pairs.exw
-- ======================================
--
with javascript_semantics
include pGUI.e
include IupGraph.e

constant x = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9},
y = {2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0}

function get_data(Ihandle graph) return {{x,y,CD_BLUE}} end function

IupOpen()
Ihandle graph = IupGraph(get_data),
dlg = IupDialog(graph,TITLE="Plot coordinate pairs")
IupSetAttributes(dlg,"RASTERSIZE=320x240,MINSIZE=320x200")
IupSetAttributes(graph,"XTICK=1,XMIN=0,XMAX=9")
IupSetAttributes(graph,"YTICK=20,YMIN=0,YMAX=180")
IupShow(dlg)
if platform()!=JS then
IupMainLoop()
IupClose()
end if


## PicoLisp

(load "@lib/ps.l")

(scl 1)

(de plot (PsFile DX DY Lst)
(let (SX (length Lst)  SY (apply max Lst)  N 0 Val)
(out PsFile
(psHead (+ DX 20) (+ DY 40))
(font (9 . "Helvetica"))
(if (or (=0 SX) (=0 SY))
(window 60 12 DX DY
(font 24 ,"Not enough Data") )
(setq Lst  # Build coordinates
(let X -1
(mapcar
'((Y)
(cons
(*/ (inc 'X) DX SX)
(- DY (*/ Y DY SY)) ) )
Lst ) ) )
(color 55 95 55  # Background color
(let (X (+ DX 40) Y (+ DY 40))
(poly T  0 0  X 0  X Y  0 Y  0 0) ) )
(window 20 20 DX DY  # Plot coordinates
(poly NIL 0 0  0 DY  (- DX 20) DY)
(color 76 24 24
(poly NIL (caar Lst) (cdar Lst) (cdr Lst)) ) )
(window 4 4 60 12 (ps (format SY *Scl)))
(for X SX
(window (+ 6 (*/ (dec X) DX SX)) (+ 24 DY) 30 12
(ps (format (dec X)) 0) ) ) )
(page) ) ) )

(plot "plot.ps" 300 200 (2.7 2.8 31.4 38.1 58.0 76.2 100.5 130.0 149.3 180.0))
(call 'display "plot.ps")

## PostScript

/x [0 1 2 3 4 5 6 7 8 9] def
/y [2.7 2.8 31.4 38.1 58.0 76.2 100.5 130.0 149.3 180.0] def
/i 1 def

newpath
x 0 get y 0 get moveto
x length 1 sub{
x i get y i get lineto
}repeat
stroke


## PureBasic

Structure PlotData
x.i
y.f
EndStructure

Global i, x, y.f, max_x, max_y, min_x = #MAXLONG, min_y = Infinity()
Define count = (?serie_y - ?serie_x) / SizeOf(Integer) - 1
Global Dim MyData.PlotData(count)

Restore serie_x
For i = 0 To count
MyData(i)\x = x
If x > max_x: max_x = x:  EndIf
If x < min_x: min_x = x:  EndIf
Next
Restore serie_y
For i = 0 To count
MyData(i)\y = y
If y > max_y: max_y = y:  EndIf
If y < min_y: min_y = y:  EndIf
Next

Procedure UpdatePlot(Win, w, h)
Static gblm = 20, gtrm = 5 ;graph's bottom-left and top-right margin

Protected count = ArraySize(MyData())
If w > gblm And h > gblm And count > 0
SetWindowTitle(Win, "PureBasic Plot " + Str(w) + "x" + Str(h))
Protected gw = w - gblm, gh = h - gblm ;graph's width and height
Protected i, yf.f, xf.f
yf = (gh - gtrm) / max_y
xf = (gw - gtrm) / max_x

CreateImage(0, w, h)
Protected OutputID = ImageOutput(0)
StartDrawing(OutputID)
DrawingMode(#PB_2DDrawing_Transparent)
;- Draw grid
For i = 0 To count
y = gh - max_y * i / count * yf
LineXY(gblm, y, w - gtrm, y, $467E3E) ; Y-scale DrawText(1, y - 5, RSet(StrD(i / count * max_y, 1), 5)) x = gblm + max_x * i / count * xf y = gh ; X-Scale LineXY(x, y, x, gtrm,$467E3E)
If i: DrawText(x - 5, y + 2, Str(i)): EndIf
Next

;- Draw curve
Protected ox = gblm, oy = gh, x, y
For i = 0 To count
x = gblm + MyData(i)\x * xf
y = gh - MyData(i)\y * yf
LineXY(ox, oy, x, y, $0133EE) ox = x: oy = y Next StopDrawing() ImageGadget(0, 0, 0, w, h, ImageID(0)) EndIf EndProcedure Define Win = OpenWindow(#PB_Any, 0, 0, 600, 400,"", #PB_Window_SystemMenu | #PB_Window_SizeGadget) If Win SmartWindowRefresh(Win, 1) UpdatePlot(Win, WindowWidth(Win), WindowHeight(Win)) Repeat Define event = WaitWindowEvent() Select event Case #PB_Event_SizeWindow UpdatePlot(Win, WindowWidth(Win), WindowHeight(Win)) EndSelect Until event = #PB_Event_CloseWindow ; Save the plot if the user wants to If MessageRequester("Question", "Save it?", #PB_MessageRequester_YesNo) = #PB_MessageRequester_Yes Define File$=SaveFileRequester("Save as", "PB.png", "PNG (*.png)|*.png", 0)
UsePNGImageEncoder()

### without point labels

Example usage:

/*REXX program plots X,Y   coördinate pairs  of  numbers  with plain (ASCII) characters.*/
x = 0      1       2       3       4       5        6        7        8        9
y = 2.7    2.8    31.4    38.1    58.0    76.2    100.5    130.0    149.3    180.0
$= do j=1 for words(x) /*build a list suitable for$PLOT subr.*/
$=$   word(x, j)','word(y, j)  /*add this X,Y coördinate to the $list*/ end /*j*/ /*$≡ 0,2.7  1,2.8  2,31.4 3,38.1  ···  */
call '$PLOT'$                                  /*invoke the REXX program:  $PLOT */ exit rc /*stick a fork in it, we're all done. */  output when using the default input: │180 ∙ │ │ │ │ │ │ │ │ ∙ │ │ │ │ │ ∙ │ │ │ │ │ │ │ ∙ │ │ │ │ │ │ │ ∙ │ │ │ │ ∙ │ │ │ │ │ ∙ │ │ ∙ │ │ │ │ │ │ ∙0 ∙ 9 └──────────────────────────────────────────────────────────────────────────────  ### with point labels /*REXX program plots X,Y coördinate pairs of numbers with plain (ASCII) characters.*/ x = 0 1 2 3 4 5 6 7 8 9 y = 2.7 2.8 31.4 38.1 58.0 76.2 100.5 130.0 149.3 180.0$=
do j=1  for words(x)           /*build a list suitable for $PLOT subr.*/$=$word(x, j)','word(y, j) /*add this X,Y coördinate to the$ list*/
end   /*j*/                    /*$≡ 0,2.7 1,2.8 2,31.4 3,38.1 ··· */ call '$PLOT'  $'(LABELDatapoints' /*invoke the REXX program:$PLOT      */
exit rc                                          /*stick a fork in it,  we're all done. */

output   when using the default input:
│180                                                                                   (9,180)∙
│
│
│
│
│
│
│
│
│
│                                                                                   ∙(8,149.3)
│
│
│
│
│
│                                                                        ∙(7,130)
│
│
│
│
│
│
│
│
│
│                                                              ∙(6,100.5)
│
│
│
│
│
│
│                                                   ∙(5,76.2)
│
│
│
│
│
│                                         ∙(4,58)
│
│
│
│
│
│
│                              ∙(3,38.1)
│
│                    ∙(2,31.4)
│
│
│
│
│
│
│
│
∙(0,2.7)  ∙(1,2.8)
└──────────────────────────────────────────────────────────────────────────────────────────────


## Ring

# Project : Plot coordinate pairs

paint = null

new qapp
{
win1 = new qwidget() {
setwindowtitle("Plot coordinate pairs")
setgeometry(100,100,1024,900)
label1 = new qlabel(win1) {
setgeometry(10,10,1024,900)
settext("")
}
new qpushbutton(win1) {
setgeometry(50,50,100,30)
settext("draw")
setclickevent("draw()")
}
show()
}
exec()
}

func draw
p1 = new qpicture()
color = new qcolor() {
setrgb(0,0,255,255)
}
pen = new qpen() {
setcolor(color)
setwidth(1)
}
paint = new qpainter() {
begin(p1)
setpen(pen)

old = 0
yold = 0
xnew = 0
ynew = 0
x2 = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
y2 = [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0]

for x = 1 to 9
drawline(100*x,720,100*x,0)
drawtext(100*x,750,string(x))
next

for y = 20 to 180 step 20
drawline(900,4*y,0,4*y)
drawtext(0,720-4*y,string(y))
next

drawline(0,0,0,720)
drawline(0,0,900,0)

for i = 1 to 10
if i=1
xold = 100*x2[i]
yold = 720-4*y2[i]
else
xnew = 100*x2[i]
ynew = 720-4*y2[i]
drawline(xold,yold,xnew,ynew)
xold = xnew
yold = ynew
ok
next

endpaint()
}
label1 { setpicture(p1) show() }
return

Output:

## RPL

Works with: HP version 48G
≪ → x y
≪ ERASE  @ clear graphics display
x 0 + ≪ MIN ≫ STREAM x ≪ MAX ≫ STREAM XRNG    @ set x range
y 0 + ≪ MIN ≫ STREAM y ≪ MAX ≫ STREAM YRNG    @ set y range
1 x SIZE FOR j
x j GET y j GET R→C   @ generate coordinates pair
IF j 1 > THEN SWAP OVER LINE END @ draw a line from previous pair
NEXT DROP
{ (0,0) 10 "x" "y" } AXES DRAX LABEL   @ draw axes and labels
{ } PVIEW                              @ display graphics
≫ ≫ 'PLOTXY' STO

{0 1 2 3 4 5 6 7 8 9}
{2.7 2.8 31.4 38.1 58.0 76.2 100.5 130.0 149.3 180.0}
PLOTXY


## Ruby

Library: rgplot
require 'gnuplot'

x = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
y = [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0]
Gnuplot.open do |gp|
Gnuplot::Plot.new( gp ) do |plot|
plot.data << Gnuplot::DataSet.new( [x, y] ) do |ds|
ds.with = "linespoints"
ds.notitle
end
end
end


## Scala

Library: Scala
import scala.swing.Swing.pair2Dimension
import scala.swing.{ MainFrame, Panel, Rectangle }
import java.awt.{ Color, Graphics2D, geom }

object PlotCoordPairs extends scala.swing.SimpleSwingApplication {

//min/max of display-x resp. y
val (dx0, dy0) = (70, 30)
val (dxm, dym) = (670, 430)

val (prefSizeX, prefSizeY) = (720, 480)

private def ui = new Panel {

import math._
val xmax = {
val f1 = pow(10, log10(xs.max).toInt)
val f2 = if (f1 < 10) 10 else round(xs.max / f1) * f1
if (f2 >= xs.max) f2 else (round(xs.max / f1) + 1) * f1
}
val ymax = {
val f1 = pow(10, log10(ys.max).toInt)
val f2 = if (f1 < 10) 10 else round(ys.max / f1) * f1
if (f2 >= ys.max) f2 else (round(ys.max / f1) + 1) * f1
}

val (xinterv, yinterv) = (xmax / xs.size, ymax / xs.size)

case class Coord(x: Double, y: Double) {
val (dx, dy) = ((x / xmax * (dxm - dx0) + dx0).toInt, (dym - y / ymax * (dym - dy0)).toInt)
}

val pcentre = Coord(0, 0)
val pxmax = Coord(xmax, 0)
val pymax = Coord(0, ymax)

background = Color.white
preferredSize = (prefSizeX, prefSizeY)

//axes:
val a_path = new geom.GeneralPath
a_path.moveTo(pxmax.dx, pxmax.dy)
a_path.lineTo(pcentre.dx, pcentre.dy) //x-axis
a_path.lineTo(pymax.dx, pymax.dy) //y-axis
// interval ticks:
xs.map(i => Coord(i * xinterv, 0)).map(p => {
a_path.moveTo(p.dx, p.dy)
a_path.lineTo(p.dx, p.dy + 5)
})
xs.map(i => Coord(0, i * yinterv)).map(p => {
a_path.moveTo(p.dx, p.dy)
a_path.lineTo(p.dx - 5, p.dy)
})

//grid:
val g_path = new geom.GeneralPath
(1 to xs.size).
map(i => Coord(i * xinterv, 0)).map(p => {
g_path.moveTo(p.dx, p.dy);
g_path.lineTo(Coord(p.x, ymax).dx, Coord(p.x, ymax).dy)
})
(1 to xs.size).map(i => Coord(0, i * yinterv)).map(p => {
g_path.moveTo(p.dx, p.dy);
g_path.lineTo(Coord(xmax, p.y).dx, Coord(xmax, p.y).dy)
})

//labeling:
val xlabels = (0 to xs.size).map(i => {
val p = Coord(i * xinterv, 0)
Triple(p.x.toInt.toString, p.dx - 3, p.dy + 20)
})
val ylabels = (0 to xs.size).map(i => {
val p = Coord(0, i * yinterv)
Triple(p.y.toInt.toString, p.dx - 30, p.dy + 5)
})

//curve:
val path = new geom.GeneralPath
val curve = xs.map(i => Coord(xs(i), ys(i)))
curve.map(p => path.lineTo(p.dx, p.dy))
//...flag all function values:
val rects = curve.map(p => new Rectangle(p.dx - 3, p.dy - 3, 6, 6))

override def paintComponent(g: Graphics2D) = {
super.paintComponent(g)

g.setColor(Color.lightGray)
g.draw(g_path)
g.setColor(Color.black)
g.draw(a_path)
xlabels.map(t => g.drawString(t._1, t._2, t._3))
ylabels.map(t => g.drawString(t._1, t._2, t._3))
g.draw(path)
rects.map(g.draw(_))
}
}

val xs = 0 to 9
val ys: List[Double] = List(2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0)

def top = new MainFrame {
title = "Rosetta Code >>> Task: Plot coordinate pairs | Language: Scala"
contents = ui
}
}


## Scilab

--> x = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
--> y = [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0];
--> plot2d(x,y)


## Sidef

Translation of: Perl
require('GD::Graph::points')

var data = [
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9],
[2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0],
]

var graph = %s'GD::Graph::points'.new(400, 300)
var gd = graph.plot(data)

var format = 'png'
File("qsort-range.#{format}").write(gd.(format), :raw)


## Stata

clear
input x y
0 2.7
1 2.8
2 31.4
3 38.1
4 58.0
5 76.2
6 100.5
7 130.0
8 149.3
9 180.0
end

lines y x
graph export image.png


## Tcl

Library: Tk
Library: Img

This solution does not use existing plotting packages, but constructs the graphics from bare-metal Tk code.

package require Tk

# The actual plotting engine
proc plotxy {canvas xs ys} {
global xfac yfac
set maxx [tcl::mathfunc::max {*}$xs] set maxy [tcl::mathfunc::max {*}$ys]
set xfac [expr {[winfo width $canvas] * 0.8/$maxx}]
set yfac [expr {[winfo height $canvas] * 0.8/$maxy}]
scale $canvas x 0$maxx $xfac scale$canvas y 0 $maxy$yfac
foreach x $xs y$ys {
dot $canvas [expr {$x*$xfac}] [expr {$y*$yfac}] -fill red } } # Rescales the contents of the given canvas proc scale {canvas direction from to fac} { set f [expr {$from*$fac}] set t [expr {$to*$fac}] switch --$direction {
x {
set f [expr {$from *$fac}]
set t [expr {$to *$fac}]
$canvas create line$f 0 $t 0$canvas create text $f 0 -anchor nw -text$from
$canvas create text$t 0 -anchor n -text $to } y { set f [expr {$from * -$fac}] set t [expr {$to * -$fac}]$canvas create line 0 $f 0$t
$canvas create text 0$f -anchor se -text $from$canvas create text 0 $t -anchor e -text$to
}
}
}
# Helper to make points, which are otherwise not a native item type
proc dot {canvas x y args} {
set id [$canvas create oval [expr {$x-3}] [expr {-$y-3}] \ [expr {$x+3}] [expr {-$y+3}]]$canvas itemconfigure $id {*}$args
}

pack [canvas .c -background white]
update
set xs {0   1    2    3    4    5     6     7     8     9}
set ys {2.7 2.8 31.4 38.1 58.0 76.2 100.5 130.0 149.3 180.0}
plotxy .c $xs$ys
.c config -scrollregion [.c bbox all]
.c move all 20 20

# Save image (this is the only part that requires an external library)
package require Img
set im [image create photo -data .c]
$im write plotxy.png -format PNG  Of course, if we were generating an encapsulated postscript version, we would be able to do that directly. Note also that in Tk 8.6, there is no need for an external library to write PNG images; the capability is directly supported. ## TI-89 BASIC FnOff PlotsOff NewPlot 1, 1, x, y ZoomData ## Ursala Ursala doesn't plot anything directly, but has libraries to generate LaTeX code for 2D and 3D graphics. The output file has to be run through LaTeX or included into a LaTeX document. Here's the way to do it just as a quick check (all default settings and dots connected with straight lines). #import std #import flo #import fit #import plo x = <0., 1., 2., 3., 4., 5., 6., 7., 8., 9.> y = <2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0> #output dot'tex' latex_document+ plot main = visualization[curves: <curve[points: ~&p/x y]>] (output) Here's one way you might do it if you were interested in publication quality graphics. The dots are connected with a cubic spline interpolating function sampled at 200 points, and the axes are nicely labeled. main = visualization[ abscissa: axis[ variable: 'problem size', hats: printf/*'%0.0f' ari10/0. 9.], ordinates: ~&iNC axis[ variable: 'execution time ($\mu$s)', hats: printf/*'%0.1f' ari6/0. 180.], curves: < curve[ points: ^(~&,chord_fit0@p/x y)* ari200/0. 9., attributes: {'linecolor': 'lightgray'}], curve[ scattered: true, points: ~&p/x y, attributes: {'linecolor': 'black'}]>] (output) ## VBA Using Excel Private Sub plot_coordinate_pairs(x As Variant, y As Variant) Dim chrt As Chart Set chrt = ActiveSheet.Shapes.AddChart.Chart With chrt .ChartType = xlLine .HasLegend = False .HasTitle = True .ChartTitle.Text = "Time" .SeriesCollection.NewSeries .SeriesCollection.Item(1).XValues = x .SeriesCollection.Item(1).Values = y .Axes(xlValue, xlPrimary).HasTitle = True .Axes(xlValue, xlPrimary).AxisTitle.Characters.Text = "microseconds" End With End Sub Public Sub main() x = [{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}] y = [{2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0}] plot_coordinate_pairs x, y End Sub ## Wren Library: DOME import "graphics" for Canvas, ImageData, Color import "dome" for Window import "math" for Point class PlotCoordinates { construct new(width, height) { Window.title = "Plot coordinates" Window.resize(width, height) Canvas.resize(width, height) _width = width _height = height } init() { var x = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] var y = [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0] plotCoordinates(x, y) } plotCoordinates(x, y) { var n = x.count // draw axes Canvas.line(40, _height - 40, _width - 40, _height - 40, Color.blue, 2) Canvas.line(40, _height - 40, 40, 40, Color.blue, 2) var length = 40 * n var div = length / 10 var j = 0 for (i in 0..9) { var p = Point.new(40 + j, _height - 40) Canvas.print(i.toString, p.x - 4, p.y + 4, Color.white) j = j + div } j = div for (i in 1..9) { var p = Point.new(10, _height - 40 - j) var s = (i * 20).toString if (s.count == 2) s = " " + s Canvas.print(s, p.x, p.y, Color.white) j = j + div } Canvas.print("X", _width - 44, _height - 36, Color.green) Canvas.print("Y", 20, 40, Color.green) // plot points var xStart = 40 var xScale = 40 var yStart = 40 var yScale = 2 var points = List.filled(n, null) for (i in 0...n) { points[i] = Point.new(xStart + x[i]*xScale, _height - yStart - y[i]*yScale) } Canvas.circlefill(points[0].x, points[0].y, 3, Color.red) for (i in 1...n) { Canvas.line(points[i-1].x, points[i-1].y, points[i].x, points[i].y, Color.red) Canvas.circlefill(points[i].x, points[i].y, 3, Color.red) } } update() {} draw(alpha) {} } var Game = PlotCoordinates.new(500, 500) ## XPL0 XPL0 does not provide a library routine for plotting graphs. An issue with this particular task is how general to make the code. This is pretty specific. include c:\cxpl\codes; \intrinsic 'code' declarations def ScrW=640, ScrH=480, VidMode=$101;
def     Sx = ScrW/10,           \pixels per horz grid line
Sy = ScrH/10,           \pixels per vert grid line
Ox = (3+1+1)*8+2,       \offset for horz grid: allow room for "180.0"
Oy = ScrH-20;           \offset for vert grid: allow room for labels
int     X, DataX;
real    Y, DataY, Gain;
def     Brown=6, LCyan=11;

[DataX:= [0,   1,    2,    3,    4,    5,     6,     7,     8,     9];
DataY:= [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0];

SetVid(VidMode);
for X:= 0 to 9 do                                               \draw grid
[Move(X*Sx+Ox, Oy);  Line(X*Sx+Ox, Oy-9*Sy, Brown);     \vert lines
Move(Ox, Oy-X*Sy);  Line(9*Sx+Ox, Oy-X*Sy, Brown);     \horz lines
];
Format(3,1);  Attrib(LCyan);                                    \label grid
Y:= 0.0;
for X:= 0 to 9 do
[Move(X*Sx+Ox-3, Oy+6); IntOut(6, X);                   \X axis
Move(0, Oy-X*Sy-7);     RlOut(6, Y);                   \Y axis
Y:= Y + 20.0;
];
Gain:= float(Sy)/20.0;
Move(DataX(0)*Sx+Ox, Oy-Fix(DataY(0)*Gain));                    \plot points
for X:= 1 to 9 do
Line(DataX(X)*Sx+Ox, Oy-Fix(DataY(X)*Gain), LCyan);

if ChIn(1) then [];                                             \wait for key
SetVid(3);                                                      \restore text
]

## Yorick

x = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
y = [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0];
window, 0;
plmk, y, x;
window, 1;
plg, y, x, marks=0;

## zkl

Translation of: gnuplot
Translation of: Go

Solution using gnuplot. Output is the same as for the gnuplot example on this page.

A program can of course supply commands and data to gnuplot as prepared files. For the spirit of controlling plotting with the native language however, this example shows how commands and data can be prepared programmatically and supplied to gnuplot through stdin.

#<<<
cmd:=0'|
#set term wxt  # X11
unset key  # Only one data set, so the key is uninformative

plot '-'   # '-' can be replaced with a filename, to read data from that file.
0   2.7
1   2.8
2  31.4
3  38.1
4  68.0
5  76.2
6 100.5
7 130.0
8 149.3
9 180.0
e
|;
#<<<

gnuplot:=System.popen("gnuplot","w");
gnuplot.write(cmd); gnuplot.flush();
ask("Hit return to finish"); gnuplot.close();