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Massive On-line Analysis is an environment for massive data mining. MOA provides a framework for data stream mining and includes tools for evaluation and a collection of machine learning algorithms. Related to the WEKA project, also written in Java, while scaling to more demanding problems.

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/*
 *    GraphCurve.java
 *    Copyright (C) 2010 RWTH Aachen University, Germany
 *    @author Jansen ([email protected])
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 *    
 *    
 */
package moa.gui.visualization;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.util.ArrayList;
import moa.evaluation.MeasureCollection;
import moa.streams.clustering.ClusterEvent;

public class GraphCurve extends javax.swing.JPanel {
    private double min_value = 0;
    private double max_value = 1;
    private MeasureCollection measure0 = null;
    private MeasureCollection measure1 = null;
    private int measureSelected = 0;

    private double x_resolution;
    private int processFrequency;

    private ArrayList clusterEvents;
    
    
    /** Creates new form GraphCurve */
    public GraphCurve() {
        initComponents();
    }


    public void setGraph(MeasureCollection measure0, MeasureCollection measure1, int selection){
       this.measure0 = measure0;
       this.measure1 = measure1;
       this.measureSelected = selection;
       repaint();
    }
    
    void setProcessFrequency(int processFrequency) {
        this.processFrequency = processFrequency;
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);

        g.setColor(Color.BLACK);

        if(measure0!=null && measure1!=null){
                paintFullCurve(g, measure0, measureSelected, Color.red);
                paintFullCurve(g, measure1, measureSelected, Color.blue);
        }
        else{
            if(measure0!=null){
                paintFullCurve(g, measure0, measureSelected, Color.red);
            }
        }
        paintEvents(g);
        
    }


    private void paintFullCurve(Graphics g, MeasureCollection m, int mSelect, Color color){
            if (m.getNumberOfValues(mSelect)==0) return;

            boolean corrupted = false;
            int height = getHeight();
            int width = getWidth();
            int n = m.getNumberOfValues(mSelect);
            if(x_resolution > 1) 
                n = (int)(n / (int)x_resolution);
            int[] x = new int[n];
            int[] y = new int[n];

            for (int i = 0; i < n; i ++) {
                if(x_resolution > 1){
                    //we need to compress the values
                    double sum_y = 0;
                    int counter = 0;
                    for (int j = 0; j < x_resolution; j++) {
                        if((i)*x_resolution+j clusterEvents) {
        this.clusterEvents = clusterEvents;
    }

    @Override
    public Dimension getPreferredSize() {
        return super.getPreferredSize();
    }

    void setXResolution(double x_resolution) {
        this.x_resolution = x_resolution;
    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // //GEN-BEGIN:initComponents
    private void initComponents() {

        setOpaque(false);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 1000, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 300, Short.MAX_VALUE)
        );
    }// //GEN-END:initComponents







    // Variables declaration - do not modify//GEN-BEGIN:variables
    // End of variables declaration//GEN-END:variables

}