<%// DonutHole:%>

<%
// To display a donut hole in the center of a pie chart,
// get the chart's graph model and call the model's
// setDonutHoleSize() method to set a radius that is a
// percentage of the entire pie radius.
%>

<%@page import="
  com.sas.servlet.tbeans.graphics.html.PieChart,
  com.sas.graphics.components.piechart.PieChartTableDataModel,
  com.sas.graphics.components.AnalysisVariable,
  com.sas.graphics.components.ClassificationVariable,
  com.sas.swing.models.TableModelAdapter,
  com.sas.models.SimpleTable"
%>

<%
 // Create a PieChart instance
    PieChart pieChart = new PieChart();

 // Create a simple SAS table and add data to it
    SimpleTable table = new SimpleTable();
%>

<%@ include file="EnergyData.jsp" %>

<% 
 // Convert a simple SAS table to a simple Java Swing table
    TableModelAdapter tma = new TableModelAdapter(table);
    tma.setFormattedDataUsed(false);

 // Create a data model and attach the data source
    PieChartTableDataModel dataModel=
      new PieChartTableDataModel(tma);

 // Assign the data model to the PieChart
    pieChart.setDataModel(dataModel);

 // Hide the legend
    pieChart.getGraphModel().getLegendModel().setVisible(false);

 // Specify a donut hole 
    pieChart.getGraphModel().setDonutHoleSize(30);

 // Assign the Category variable role, and optionally the
 // Response variable role, to appropriate variable(s)
    dataModel.setCategoryVariable(
      new ClassificationVariable("EnergyType"));
    dataModel.setResponseVariable(
      new AnalysisVariable("Produced"));

 // Set a graph title
    pieChart.getTitle1().setText("Energy Production");

 // Set HTTP-specific response and request functionality
    pieChart.setResponse(response);
    pieChart.setRequest(request);

 // Write the chart to the display
    pieChart.write(out);
%>