package ij.plugin.filter;
import java.awt.Color;
import ij.*;
import ij.gui.*;
import ij.process.*;
import ij.plugin.filter.ParticleAnalyzer;
import ij.measure.*;
import ij.util.*;

/** Implements ImageJ's Analyze/Tools/Analyze Line Graph command. */
public class LineGraphAnalyzer implements PlugInFilter, Measurements  {
	ImagePlus imp;

	public int setup(String arg, ImagePlus imp) {
		this.imp = imp;
		return DOES_8G+NO_CHANGES;
	}

	public void run(ImageProcessor ip) {
		analyze(imp);
	}
	
	/** Uses ImageJ's particle analyzer to extract a set
		of coordinate pairs from a digitized line graph. */
	public void analyze(ImagePlus imp) {
		ImageProcessor ip = imp.getProcessor();
		ImageProcessor ip2 = ip.crop();
		int width = ip2.getWidth();
		int height = ip2.getHeight();
		ip2.setColor(Color.white);
		for (int i=1; i