i have generated chart and imagemap using jfreechart in gwt servlet...but i
am getting only chart...i want clickable imagemap...i guess i need to
return chart and image map sepratly..how can i do that?? please help
me..here is my code..I am only getting Chart..I want clickable image
map..please help..
public class Clickablebar extends HttpServlet
{
public Clickablebar() {
super();
}
protected void doGet(HttpServletRequest request,HttpServletResponse
response)
throws ServletException, IOException
{
Clickablebar.doGe(request, response);
}
public static String doGe(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException
{
PrintWriter out = new PrintWriter(response.getOutputStream());
double[][] data = new double[][] {
{56.0, -12.0, 34.0, 76.0, 56.0, 100.0, 67.0, 45.0},
{37.0, 45.0, 67.0, 25.0, 34.0, 34.0, 100.0, 53.0},
{43.0, 54.0, 34.0, 34.0, 87.0, 64.0, 73.0, 12.0}
};
CategoryDataset dataset = DatasetUtilities.createCategoryDataset(
"Series ", "Type ", data
);
JFreeChart chart = null;
boolean drilldown = true;
if (drilldown) {
CategoryAxis3D categoryAxis = new CategoryAxis3D("Category");
ValueAxis valueAxis = new NumberAxis3D("Value");
BarRenderer3D renderer = new BarRenderer3D();
renderer.setToolTipGenerator(
new StandardCategoryToolTipGenerator());
renderer.setItemURLGenerator(new StandardCategoryURLGenerator(
"barchart101.html"));
CategoryPlot plot = new CategoryPlot(dataset, categoryAxis,
valueAxis, renderer);
plot.setOrientation(PlotOrientation.VERTICAL);
chart = new JFreeChart("Bar Chart",
JFreeChart.DEFAULT_TITLE_FONT,
plot, true);
}
else {
chart = ChartFactory.createBarChart3D(
"Bar Chart", // chart title
"Category", // domain axis label
"Value", // range axis label
dataset, // data
PlotOrientation.VERTICAL,
true, // include legend
true,
false
);
}
chart.setBackgroundPaint(java.awt.Color.white);
// save it to an image
ChartRenderingInfo info = new ChartRenderingInfo(
new StandardEntityCollection());
ChartUtilities.writeChartAsPNG(out1, chart, 600, 400, info);
ImageMapUtilities.writeImageMap(out, "chart", info);
String str= ChartUtilities.getImageMap("chart",info);
out.flush();
return str ;
}
}
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