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/* |
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Copyright @ 1999-2004, The Institute for Genomic Research (TIGR). |
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All rights reserved. |
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*/ |
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/* |
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* $RCSfile: PlotViewer.java,v $ |
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* $Revision: 1.7 $ |
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* $Date: 2006/03/24 15:51:05 $ |
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* $Author: eleanorahowe $ |
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* $State: Exp $ |
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*/ |
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package org.tigr.microarray.mev.cluster.gui.impl.pca; |
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|
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import java.awt.Color; |
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import java.awt.Font; |
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import java.awt.FontMetrics; |
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import java.awt.Graphics; |
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import java.awt.Graphics2D; |
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import java.beans.Expression; |
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|
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import javax.swing.JComponent; |
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import javax.swing.JPanel; |
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import javax.swing.JTextArea; |
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|
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import org.tigr.microarray.mev.cluster.gui.impl.ViewerAdapter; |
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import org.tigr.util.FloatMatrix; |
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|
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public class PlotViewer extends ViewerAdapter implements java.io.Serializable { |
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|
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private JComponent content; |
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FloatMatrix S; |
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/** |
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* Constructs a <code>PlotViewer</code> for specified S-matrix. |
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*/ |
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public PlotViewer(FloatMatrix S) { |
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content = createContent(S); |
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this.S = S; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public Expression getExpression(){ |
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return new Expression(this, this.getClass(), "new", |
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new Object[]{S}); |
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} |
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|
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/** |
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* Returns the viewer content. |
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*/ |
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public JComponent getContentComponent() { |
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return content; |
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} |
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|
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/** |
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* Creates the viewer content. |
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*/ |
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private JComponent createContent(FloatMatrix S) { |
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return new Plot(S); |
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} |
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|
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/** Returns a component to be inserted into the scroll pane row header |
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*/ |
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public JComponent getRowHeaderComponent() { |
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return null; |
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} |
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|
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/** |
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* The class to draw the viewer content. |
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*/ |
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private class Plot extends JPanel { |
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|
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private static final int left = 40; |
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private static final int top = 40; |
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private FloatMatrix S; |
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private Font font = new Font("monospaced", Font.BOLD, 10); |
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|
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/** |
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* Constructs a <code>Plot</code> with specified S-matrix. |
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*/ |
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public Plot(FloatMatrix S) { |
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setBackground(Color.white); |
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setFont(font); |
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this.S = S; |
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} |
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|
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/** |
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* Paints the viewer content into specified graphics. |
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*/ |
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public void paint(Graphics g) { |
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super.paint(g); |
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// drawing rectangle |
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int plotWidth = getWidth() - 80; |
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int plotHeight = getHeight() - 80; |
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if (plotWidth < 5 || plotHeight < 5) { |
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return; |
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} |
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g.setColor(Color.black); |
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g.drawRect(left, top, plotWidth, plotHeight); |
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|
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double maxValue = S.get(0,0); |
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if (Double.isNaN(maxValue)) { |
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return; |
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} |
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int counter = 1; |
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while (maxValue >= 10) { |
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maxValue /= 10.0; |
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counter *= 10; |
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} |
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int scale = ((int)Math.round(maxValue+0.5))*counter; |
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int steps = ((int)Math.round(maxValue+0.5)); |
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// drawing left marks |
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double stepY = plotHeight/(double)(steps); |
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for (int i=1; i<steps; i++) { |
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g.drawLine(left, top + (int)Math.round(i*stepY), left+5, top+(int)Math.round(i*stepY)); |
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} |
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// drawing right marks |
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double stepX = plotWidth/(S.getColumnDimension()-1.0); |
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for (int i=1; i<S.getColumnDimension(); i++) { |
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g.drawLine(left+(int)Math.round(i*stepX), top+plotHeight-5, left+(int)Math.round(i*stepX), top+plotHeight); |
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} |
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g.setColor(Color.magenta); |
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double factor = (double)plotHeight/(double)(scale); |
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int prevValue = -(int)Math.round(S.get(0,0)*factor); |
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int curValue; |
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int zeroValue = top+plotHeight; |
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// draw chart |
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for (int i=1; i<S.getColumnDimension(); i++) { |
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curValue = -(int)Math.round(S.get(i, i)*factor); |
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g.drawLine(left+(int)Math.round((i-1)*stepX), zeroValue+prevValue, left+(int)Math.round(i*stepX), zeroValue+curValue); |
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prevValue = curValue; |
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} |
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// draw points |
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g.setColor(new Color(0,0,128)); |
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for (int i=0; i<S.getColumnDimension(); i++) { |
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curValue=-(int)Math.round(S.get(i,i)*factor); |
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g.fillOval(left+(int)Math.round(i*stepX)-3, zeroValue+curValue-3, 6, 6); |
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} |
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// draw labels |
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int width; |
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String str; |
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FontMetrics metrics = g.getFontMetrics(); |
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for (int i=0; i <= steps; i++) { |
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str = String.valueOf(scale-counter*i); |
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width = metrics.stringWidth(str); |
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g.drawString(str, left-10-width, top+(int)Math.round(i*stepY)+5); |
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} |
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((Graphics2D)g).rotate(-Math.PI/2.0); |
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for (int i=0; i<S.getColumnDimension(); i++) { |
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str = String.valueOf(i+1); |
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width = metrics.stringWidth(str); |
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g.drawString(str,-top-plotHeight-10-width, left+5+(int)Math.round(i*stepX)); |
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} |
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((Graphics2D)g).rotate(Math.PI/2.0); |
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} |
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} |
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} |