package Plot;

import Proc.*;
import java.util.*;
import java.awt.*;
import jas.hist.*;

public class HistPlot{
        
    private String cat;
    private double min;
    private double max;
    private String title;
    private double[] data;

    public HistPlot(double[] data, String cat, String title){
	this.data = data;	
	this.cat = cat;
	this.title = title;
    }


    double[] sortData(){
      		
	int binnum = 10;
	if(data == null)
	    return null;
	// put the data to the array
	
	for(int j=0;j<data.length;j++){
	    if(j==0)
		min = max = data[0];
	    
	    if(data[j]>max)
		max = data[j];
	    if(data[j]<min)
		min =data[j];
  
	}
	
	double interval = (max-min)/binnum;
	// System.out.println("Max: "+max+" Min: "+min+" interval: "+interval);
	double[] bin = new double[binnum];
	

	for(int i=0;i<binnum;i++)
	    bin[i] = 0;
	
	
	for(int i=0;i<data.length;i++){
	    int num = (int)((data[i]-min)/interval);
	    if(num == binnum )
		num -= 1;	    
	    bin[num] +=1;
	}
	
	
	return bin;
    }


    public JASHist draw(){
	double[] source = sortData();
	if(source == null)
	    return null;
	
	
	JASHist plot = new JASHist();
	
	JASHistData jd = plot.addData(new ArrayDataSource(source,title,min,max));
	((JASHist1DHistogramStyle)jd.getStyle()).setShowErrorBars(false);
	jd.show(true);
	plot.setPreferredSize(new Dimension(500,300));
	plot.setTitle(title);	
	plot.getXAxis().setLabel(cat);
	plot.setAllowUserInteraction(false);
	plot.setBackground(Color.white); 
	
	return plot;
    }

}