JSci.awt.ContourPlot Maven / Gradle / Ivy
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JSci is a set of open source Java packages. The aim is to encapsulate scientific methods/principles in the most natural way possible. As such they should greatly aid the development of scientific based software.
It offers: abstract math interfaces, linear algebra (support for various matrix and vector types), statistics (including probability distributions), wavelets, newtonian mechanics, chart/graph components (AWT and Swing), MathML DOM implementation, ...
Note: some packages, like javax.comm, for the astro and instruments package aren't listed as dependencies (not available).
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package JSci.awt;
import java.awt.*;
/**
* A contour plot AWT component.
* @author Daniel Lemire
*/
public final class ContourPlot extends DoubleBufferedCanvas {
private float data[][];
private double min, max;
private int deltay;
private int[] deltax;
private float c1=1;
private float c2=1;
private float c3=1;
private int Contourx=1;
private int Contoury=1;
private int largeurMax;
private int hauteurMax;
/**
* Constructs a contour plot.
* @param z an array of the form z[i][j] = f(xi, yj).
*/
public ContourPlot(double z[][]) {
setBackground(Color.white);
setData(z);
setContourX(1);
setContourY(1);
}
/**
* Sets the data plotted by this ContourPlot to the specified data.
*/
public void setData(double feed[][]) {
//invert the rows
double[][] array=new double[feed.length][];
for(int k=0;kmax)
max=array[k][l];
if(array[k][l]largeurMax) {
largeurMax=data[k].length;
}
}
return new Dimension(largeurMax+2*Contourx,data.length+2*Contoury);
}
/**
* There is a box around the graph, this
* sets how wide it will be in the horizontal direction.
* @param k width (in pixel).
* @exception IllegalArgumentException if the width is not at least one.
*/
public void setContourX(int k) {
if(k<1)
throw new IllegalArgumentException("This parameter must be greater than 1 : "+k+" < 1");
Contourx=k;
}
/**
* There is a box around the graph, this
* sets how wide it will be in the vertical direction.
* @param k width (in pixel).
* @exception IllegalArgumentException if the width is not at least one.
*/
public void setContourY(int k) {
if(k<1)
throw new IllegalArgumentException("This parameter must be greater than 1 : "+k+" < 1");
Contoury=k;
}
public void setBounds(int x,int y,int width,int height) {
super.setBounds(x,y,width,height);
rescale();
}
private void rescale() {
Dimension d=getSize();
int largeur=d.width-2*Contourx;
int hauteur=d.height-2*Contoury;
deltay=(int) Math.floor(hauteur/data.length);
hauteurMax=deltay*data.length;
deltax=new int[data.length];
largeurMax=0;
for(int k=0;klargeurMax) largeurMax=data[k].length*deltax[k];
}
redraw();
}
/**
* Set the color for the graph. Note that the
* box around the graph has this same color.
* @exception IllegalArgumentException if
* one of the parameters is not between 0 and 1.
* @exception IllegalArgumentException if
* all three arguments are set to zero.
*/
public void setColor(float x1,float x2, float x3) {
if((x1<0)||(x1>1)||(x2<0)||(x2>1)||(x3<0)||(x3>1)) {
throw new IllegalArgumentException("Incorrect parameters : "+x1+", "+x2+", "+x3);
}
if(x1+x2+x3==0) {
throw new IllegalArgumentException("You have chosen black at the specified color. This would generate a completly black graph. Please choose another color.");
}
c1=x1;c2=x2;c3=x3;
}
/**
* Paint the graph.
*/
protected void offscreenPaint(Graphics g) {
g.setColor(new Color(1f-c1,1f-c2,1f-c3));
g.drawRect(Contourx-1,Contoury-1,largeurMax,hauteurMax);
g.setClip(Contourx,Contoury,largeurMax-1,hauteurMax-1);
for(int k=0;k