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Viewing changes to local/in/dhis-web-ga/WEB-INF/src/org/hisp/gtool/charts/LineChart2.java

  • Committer: larshelge at gmail
  • Date: 2009-03-03 16:46:36 UTC
  • Revision ID: larshelge@gmail.com-20090303164636-2sjlrquo7ib1gf7r
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local/in/dhis-web-ga/WEB-INF/src/org/hisp/gtool/charts/LineChart2.java
 
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package org.hisp.gtool.charts;
 
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import java.awt.BasicStroke;
 
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import java.awt.Font;
 
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import java.awt.image.BufferedImage;
 
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import java.io.PrintWriter;
 
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import javax.servlet.http.HttpServletRequest;
 
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import javax.servlet.http.HttpServletResponse;
 
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import javax.servlet.http.HttpSession;
 
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import org.jfree.chart.ChartRenderingInfo;
 
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import org.jfree.chart.ChartUtilities;
 
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import org.jfree.chart.JFreeChart;
 
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import org.jfree.chart.axis.CategoryAxis;
 
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import org.jfree.chart.axis.CategoryLabelPositions;
 
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import org.jfree.chart.axis.NumberAxis;
 
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import org.jfree.chart.entity.StandardEntityCollection;
 
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import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
 
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import org.jfree.chart.labels.StandardCategoryToolTipGenerator;
 
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import org.jfree.chart.plot.CategoryPlot;
 
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import org.jfree.chart.plot.DatasetRenderingOrder;
 
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import org.jfree.chart.plot.PlotOrientation;
 
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import org.jfree.chart.renderer.category.CategoryItemRenderer;
 
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import org.jfree.chart.renderer.category.LineAndShapeRenderer;
 
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import org.jfree.chart.title.TextTitle;
 
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import org.jfree.data.category.CategoryDataset;
 
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import org.jfree.data.category.DefaultCategoryDataset;
 
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import org.jfree.ui.RectangleEdge;
 
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import org.jfree.ui.VerticalAlignment;
 
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public class LineChart2 {
 
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        //       Data Related Bar Chart
 
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        //      Row Keys
 
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        String[] series1;
 
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        // Column Keys
 
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        String[] categories1;
 
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        // data...      
 
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        double[][] data1;
 
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        String chartTitle;
 
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        String xAxis_Title;
 
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        String yAxis_Title;
 
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        // Data Related Line Chart
 
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        /*
 
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        String[] series2;
 
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        // Column Keys
 
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        String[] categories2;
 
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        */
 
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        // data...      
 
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        double[][] data2;
 
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        //      constructor
 
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        public LineChart2() { }
 
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        // Function For Creating Dataset for Barchart
 
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        private DefaultCategoryDataset  getDataset1() 
 
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        {    
 
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                //      create the dataset...
 
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                DefaultCategoryDataset dataset = new DefaultCategoryDataset();
 
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                for(int i=0;i<series1.length;i++)
 
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                {
 
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                        for(int j=0;j<categories1.length;j++)
 
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                        {
 
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                                dataset.addValue(data1[i][j], series1[i], categories1[j]);
 
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                        }
 
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                }
 
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                return dataset;
 
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        }
 
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        // Function For Creating Dataset for Linechart
 
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        private DefaultCategoryDataset  getDataset2() 
 
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        {    
 
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                //      create the dataset...
 
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                DefaultCategoryDataset dataset = new DefaultCategoryDataset();
 
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                for(int i=0;i<series1.length;i++)
 
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                {
 
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                        series1[i]+="(Target)"; 
 
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                        for(int j=0;j<categories1.length;j++)
 
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                        {
 
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                                dataset.addValue(data2[i][j], series1[i], categories1[j]);
 
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                        }
 
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                }
 
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                return dataset;
 
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        }
 
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public String getChartViewer(HttpServletRequest request, HttpServletResponse response) {
 
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         final CategoryDataset dataset1 = getDataset1();
 
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    // create the first plot...
 
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    final CategoryItemRenderer renderer = new LineAndShapeRenderer();
 
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    renderer.setToolTipGenerator(new StandardCategoryToolTipGenerator());
 
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    renderer.setItemLabelGenerator(new StandardCategoryItemLabelGenerator());    
 
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    renderer.setItemLabelsVisible(true); 
 
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    final CategoryPlot plot = new CategoryPlot();
 
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    plot.setDataset(dataset1);
 
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    plot.setRenderer(renderer);
 
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    plot.setDomainAxis(new CategoryAxis(xAxis_Title));
 
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    plot.setRangeAxis(new NumberAxis(yAxis_Title));
 
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    plot.setOrientation(PlotOrientation.VERTICAL);
 
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    plot.setRangeGridlinesVisible(true);
 
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    plot.setDomainGridlinesVisible(true);
 
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    // customise the range axis...
 
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    final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
 
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    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
 
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    rangeAxis.setAutoRangeIncludesZero(true);
 
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    rangeAxis.setUpperMargin(0.15);
 
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    rangeAxis.setLowerMargin(0.15);
 
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    final CategoryDataset dataset2 = getDataset2();
 
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    final CategoryItemRenderer renderer2 = new LineAndShapeRenderer();
 
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    renderer2.setSeriesStroke(0, new BasicStroke(2.0f));
 
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    renderer2.setSeriesStroke(1, new BasicStroke(2.0f));
 
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    plot.setDataset(1, dataset2);
 
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    plot.setRenderer(1, renderer2);
 
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    plot.setDatasetRenderingOrder(DatasetRenderingOrder.FORWARD);
 
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 //   plot.setBackgroundPaint(Color.lightGray);
 
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 //   plot.setRangeGridlinePaint(Color.white);
 
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    final JFreeChart chart = new JFreeChart(plot);
 
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    //chart.setTitle("Overlaid Bar Chart");
 
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//    chart.setLegend(new StandardLegend());
 
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//    chart.setBackgroundPaint(Color.white);
 
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    /* TITLE */
 
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    final TextTitle mainTitle = new TextTitle("Overlaid Bar Chart");
 
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    mainTitle.setFont(new Font("times", Font.BOLD, 13));
 
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    mainTitle.setPosition(RectangleEdge.TOP);     
 
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    mainTitle.setVerticalAlignment(VerticalAlignment.BOTTOM);
 
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    chart.addSubtitle(mainTitle);
 
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    /* SUB TITLE */     
 
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    final TextTitle subtitle = new TextTitle(chartTitle);
 
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    subtitle.setFont(new Font("times", Font.BOLD, 13));
 
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    subtitle.setPosition(RectangleEdge.TOP);     
 
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    subtitle.setVerticalAlignment(VerticalAlignment.BOTTOM);
 
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    chart.addSubtitle(subtitle);
 
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    final CategoryAxis domainAxis = plot.getDomainAxis();
 
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    domainAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);
 
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    // OPTIONAL CUSTOMISATION COMPLETED.
 
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  ChartRenderingInfo info = null;
 
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  HttpSession session = request.getSession();
 
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  try {
 
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    //Create RenderingInfo object
 
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    response.setContentType("text/html");
 
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    info = new ChartRenderingInfo(new StandardEntityCollection());
 
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    BufferedImage chartImage = chart.createBufferedImage(800, 500, info);
 
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    // putting chart as BufferedImage in session, 
 
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    // thus making it available for the image reading action Action.
 
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    session.setAttribute("chartImage", chartImage);
 
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    PrintWriter writer = new PrintWriter(response.getWriter());
 
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    ChartUtilities.writeImageMap(writer,"imageMap",info,true);
 
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    writer.flush();
 
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  }
 
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  catch (Exception e) {
 
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     // handel your exception here
 
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  }
 
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  String pathInfo = "http://";
 
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  pathInfo += request.getServerName();
 
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  int port = request.getServerPort();
 
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  pathInfo += ":"+String.valueOf(port);
 
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  pathInfo += request.getContextPath();
 
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  String chartViewer = pathInfo + "/servlet/ChartViewer";
 
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  return chartViewer;
 
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}
 
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public String getChartTitle() {
 
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        return chartTitle;
 
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}
 
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public void setChartTitle(String chartTitle) {
 
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        this.chartTitle = chartTitle;
 
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}
 
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public String[] getCategories1() {
 
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        return categories1;
 
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}
 
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public void setCategories1(String[] categories1) {
 
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        this.categories1 = categories1;
 
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}
 
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public double[][] getData1() {
 
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        return data1;
 
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}
 
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public void setData1(double[][] data1) {
 
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        this.data1 = data1;
 
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}
 
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public double[][] getData2() {
 
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        return data2;
 
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}
 
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public void setData2(double[][] data2) {
 
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        this.data2 = data2;
 
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}
 
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public String[] getSeries1() {
 
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        return series1;
 
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}
 
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public void setSeries1(String[] series1) {
 
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        this.series1 = series1;
 
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}
 
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public String getXAxis_Title() {
 
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        return xAxis_Title;
 
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}
 
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public void setXAxis_Title(String axis_Title) {
 
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        xAxis_Title = axis_Title;
 
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}
 
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public String getYAxis_Title() {
 
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        return yAxis_Title;
 
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}
 
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public void setYAxis_Title(String axis_Title) {
 
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        yAxis_Title = axis_Title;
 
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}
 
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}