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Plot coordinate pairs: Difference between revisions
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'dot; pensize 2.4' plot X;Y</lang>
[http://www.jsoftware.com/jwiki/RosettaCode/ExamplePlot1 Output of plot.]
=={{header|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();
}
}
=={{header|Mathematica}}==
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