SpiderWebPlot: Draw inner web and Tick marks

[keltik85]

Is it possible to produce a Spider Plot looking like this:

Unfortunatley I only came this far:

This is my code for it:

class SpiderPlotPoc {
    public static void main(String[] args) {
        final DefaultCategoryDataset dataset2 = new DefaultCategoryDataset();
        String systemName = "HP - HP Unified Functional Testing"
        dataset2.addValue(100, systemName, "Support Level")
        dataset2.addValue(60, systemName, "Installation")
        dataset2.addValue(100, systemName, "Support Operation")
        dataset2.addValue(100, systemName, "Support SLA")
        dataset2.addValue(60, systemName, "Training")

        SpiderWebPlot swp2 = new SpiderWebPlot(dataset2)
        swp2.setSeriesPaint(0,Color.BLUE)

        JFreeChart spiderChart2 = new JFreeChart("Syse Spider Plot", JFreeChart.DEFAULT_TITLE_FONT, swp2, true);
        spiderChart2.setAntiAlias(true)
        File spiderChartFile2 = new File("MySpiderChart2.jpeg");
        ChartUtilities.saveChartAsJPEG(spiderChartFile2, spiderChart2, 640, 480);
    }
}

Problems I have:

1. I can't find a function to put the 0 to 100 percent ticks into the first "spider dimension"
2. I can't find a function to draw the grid
3. I cant find a function to lower the transparency of the spanned polygon

Is this stuff implemented or do I have to code it by myself or wait for someone to do it?