# 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.

Like C, this is often outsourced to another program like gnuplot, but is also possible with 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);
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);
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.
Example Algol68 plot
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.biBitCount = sizeof( DWORD ) * 8;

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 )
{
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 ) );

infoheader.bmiHeader.biBitCount = sizeof( DWORD ) * 8;
infoheader.bmiHeader.biSizeImage = bitmap.bmWidth * bitmap.bmHeight * sizeof( DWORD );

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, 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:

## 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 ).

-export( [task/0, to_png_file/3] ).

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:

alt text
#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))

## gnuplot

Example gnuplot output
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

Screenshot of groovy solution
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

Sample Output

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 double+java.sun.com&btnI=I%27m%20Feeling%20Lucky">Line2D.Double(x0, ym, xm, ym)); g2.draw(new double+java.sun.com&btnI=I%27m%20Feeling%20Lucky">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 double+java.sun.com&btnI=I%27m%20Feeling%20Lucky">Line2D.Double(j * xspan / interv + x0, ym, j * xspan / interv + x0, ym + 5)); g2.draw(new double+java.sun.com&btnI=I%27m%20Feeling%20Lucky">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 double+java.sun.com&btnI=I%27m%20Feeling%20Lucky">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. ## 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 ## 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$} Pairs ## Maple x := Vector([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]): y := Vector([2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0]): plot(x,y,style="point"); ## Mathematica x={0,1,2,3,4,5,6,7,8,9}; y={2.7,2.8,31.4,38.1,58.0,76.2,100.5,130.0,149.3,180.0}; ListPlot[{x, y} // Transpose] Output: ## MATLAB >> x = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]; >> y = [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0]; >> plot(x,y,'.-') ## Maxima (%i1) ".." (m, n) := makelist (i, i, m, n); infix ("..")$
(%i2) x: 0 .. 9$y:[2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0]$
(%i3) plot2d(['discrete, x, y], [style, [points,5,1,1]], [gnuplot_term, png], [gnuplot_out_file, "qsort-range-10-9.png"])$## OCaml #load "graphics.cma" open Graphics let round x = int_of_float (floor(x +. 0.5)) let x = [0; 1; 2; 3; 4; 5; 6; 7; 8; 9] and y = [2.7; 2.8; 31.4; 38.1; 58.0; 76.2; 100.5; 130.0; 149.3; 180.0] let () = open_graph ""; List.iter2 (fun x y -> (* scale to fit in the window *) let _x = x * 30 and _y = round(y *. 2.0) in plot _x _y) x y; ignore(wait_next_event [Key_pressed]); close_graph(); ;; Using the Archimedes library, one can write: Archimedes plot (graphics output). module A = Archimedes let y = [|2.7; 2.8; 31.4; 38.1; 58.0; 76.2; 100.5; 130.0; 149.3; 180.0|] let () = let vp = A.init [] in A.Axes.box vp; A.set_color vp A.Color.red; A.Array.y vp y; A.close vp ## Octave x = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]; y = [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0]; plot(x,y,"o"); pause; ## Ol ; define input arrays (define x '(0 1 2 3 4 5 6 7 8 9)) (define y '(2.7 2.8 31.4 38.1 58.0 76.2 100.5 130.0 149.3 180.0)) ; render (import (lib gl2)) (glOrtho 0 10 0 200 0 1) (gl:set-renderer (lambda (mouse) (glClear GL_COLOR_BUFFER_BIT) (glColor3f 0 1 0) (glBegin GL_LINE_STRIP) (map glVertex2f x y) (glEnd))) ## PARI/GP plothraw(vx, vy) ## Perl use GD::Graph::points; @data = ( [0, 1, 2, 3, 4, 5, 6, 7, 8, 9], [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0], );$graph = GD::Graph::points->new(400, 300);
$gd =$graph->plot(\@data) or die $graph->error; # Save as image.$format = $graph->export_format; open(OUF, ">qsort-range-10-9.$format");
binmode OUF;
print OUF $gd->$format();
close(OUF);
Library: Imager
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'); ## Perl 6 Works with: Rakudo version 2018.03 Generate an SVG image file. use SVG; use SVG::Plot; my @x = 0..9; my @y = (2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0); say SVG.serialize: SVG::Plot.new( width => 512, height => 512, x => @x, x-tick-step => { 1 }, min-y-axis => 0, values => [@y,], title => 'Coordinate Pairs', ).plot(:xy-lines); ## Phix Library: pGUI Output same as BBC BASIC -- -- demo\rosetta\Plot_coordinate_pairs.exw -- include pGUI.e Ihandle dlg, canvas cdCanvas cddbuffer, cdcanvas 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 redraw_cb(Ihandle /*ih*/, integer /*posx*/, integer /*posy*/) integer {width, height} = IupGetIntInt(canvas, "DRAWSIZE") atom cx,cy,nx,ny atom {w,h} = {(width-60)/9,(height-60)/180} cdCanvasActivate(cddbuffer) cx = 30+x[1]*w cy = 30+y[1]*h for i=2 to length(x) do cdCanvasSetForeground(cddbuffer, CD_BLACK) nx = 30+(i-1)*w ny = 30+(i-1)*20*h {} = cdCanvasTextAlignment(cddbuffer, CD_NORTH) cdCanvasText(cddbuffer, nx, 25, sprintf("%d",(i-1))) {} = cdCanvasTextAlignment(cddbuffer, CD_EAST) cdCanvasText(cddbuffer, 25, ny, sprintf("%3d",(i-1)*20)) cdCanvasSetForeground(cddbuffer, CD_GRAY) cdCanvasLine(cddbuffer,30,ny,width-30,ny) cdCanvasLine(cddbuffer,nx,30,nx,height-30) cdCanvasSetForeground(cddbuffer, CD_BLUE) nx = 30+floor(x[i]*w) ny = 30+floor(y[i]*h) cdCanvasLine(cddbuffer,cx,cy,nx,ny) cx = nx cy = ny end for cdCanvasSetForeground(cddbuffer, CD_BLACK) cdCanvasLine(cddbuffer,30,30,width-30,30) cdCanvasLine(cddbuffer,30,30,30,height-30) cdCanvasFlush(cddbuffer) return IUP_DEFAULT end function function map_cb(Ihandle ih) cdcanvas = cdCreateCanvas(CD_IUP, ih) cddbuffer = cdCreateCanvas(CD_DBUFFER, cdcanvas) cdCanvasSetBackground(cddbuffer, CD_WHITE) return IUP_DEFAULT end function function esc_close(Ihandle /*ih*/, atom c) if c=K_ESC then return IUP_CLOSE end if return IUP_CONTINUE end function procedure main() IupOpen() canvas = IupCanvas(NULL) IupSetAttribute(canvas, "RASTERSIZE", "340x340") -- initial size IupSetCallback(canvas, "MAP_CB", Icallback("map_cb")) dlg = IupDialog(canvas) IupSetAttribute(dlg, "TITLE", "Plot coordinate pairs") IupSetCallback(dlg, "K_ANY", Icallback("esc_close")) IupSetCallback(canvas, "ACTION", Icallback("redraw_cb")) IupMap(dlg) IupSetAttribute(canvas, "RASTERSIZE", NULL) -- release the minimum limitation IupShowXY(dlg,IUP_CENTER,IUP_CENTER) IupMainLoop() IupClose() end procedure main() ## PicoLisp Example picoLisp output (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 /i i 1 add def }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 Read.i x 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 Read.f y 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$=SaveFileRequester("Save as", "PB.png", "PNG (*.png)|*.png", 0) UsePNGImageEncoder() SaveImage(0, File$, #PB_ImagePlugin_PNG)
EndIf
EndIf

DataSection
serie_x:
Data.i 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
serie_y:
Data.f 2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0
EndDataSection

## Python

### Library: matplotlib

matplotlib plot of x,y arrays

Interactive session:

>>> 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]

>>> import pylab
>>> pylab.plot(x, y, 'bo')
>>> pylab.savefig('qsort-range-10-9.png')

See some other examples:

### Library: VPython

from visual import *
from visual.graph import *

plot1 = gdisplay( title='VPython Plot-Demo',
xtitle='x',
ytitle='y (click and drag mouse to see coordinates)',
foreground=color.black,
background=color.white,
x=0, y=0,
width=400, height=400,
xmin=0, xmax=10,
ymin=0, ymax=200 )

f1 = gdots(color=color.red) # create plot-object

f1.plot(pos= (0, 2.7), color=color.blue ) # add a single point
f1.plot(pos=[(1, 2.8), # add a list of points
(2, 31.4),
(3, 38.1),
(4, 58.0),
(5, 76.2),
(6, 100.5),
(7, 130.0),
(8, 149.3),
(9, 180.0) ]
)
label(display=plot1.display, text="Look here",
pos=(6,100.5), xoffset=30,yoffset=-20 )

## R

R has several different plotting paradigms. First we define the data.

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

plot(x,y)

Library: lattice
library(lattice)
xyplot(y~x)

Library: ggplot2
library(ggplot2)
qplot(x,y)

## Racket

Racket has a built-in plotting library

#lang racket
(require plot)

(define x (build-list 10 values))
(define y (list 2.7 2.8 31.4 38.1 58.0 76.2 100.5 130.0 149.3 180.0))

(plot-new-window? #t)
(plot (points (map vector x y)))

This opens a new window with this image (with interactive zooming)

And this

#lang racket
(require plot)

(define x (build-list 10 values))
(define y (list 2.7 2.8 31.4 38.1 58.0 76.2 100.5 130.0 149.3 180.0))

(plot-new-window? #t)
(plot (lines (map vector x y)))

opens a new window with this image

## REXX

See   Plot coordinate pairs/REXX   for the $PLOT program. ### without point labels Example usage: /*REXX program plots X,Y coördinate pairs of numbers with plain (ASCII) characters.*/ x = 0 1 2 3 4 5 6 7 8 9 y = 2.7 2.8 31.4 38.1 58.0 76.2 100.5 130.0 149.3 180.0$=
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 load "guilib.ring" 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: ## Ruby Library: rgplot gnuplot of x,y arrays 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))) path.moveTo(curve.head.dx, curve.head.dy) 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 Screenshot for Tcl code 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

TI-89 screenshot
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: ^(~&,[email protected]/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

## 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.

Output
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();