problem with dotrenderer

[ahury]

I make a scatter plot with urlgenerator like this:


jfreechart.getXYPlot().setDataset(0, datasetPoint);
jfreechart.getXYPlot().getRenderer().setToolTipGenerator(
toolTipGenerator);
jfreechart.getXYPlot().setRenderer(1,dotRenderer); jfreechart.getXYPlot().getRenderer().setURLGenerator(urlGenerator);

and I have a very nice and working graph butI want to reduce the width of the dot.
I add this code to make dots smaller

XYDotRenderer dotRenderer = new XYDotRenderer();
dotRenderer.setDotHeight(taillePoint); dotRenderer.setDotWidth(taillePoint); dotRenderer.setURLGenerator(urlGenerator);
jfreechart.getXYPlot().setRenderer(0,dotRenderer);

just before the line : jfreechart.getXYPlot().getRenderer().setURLGenerator(urlGenerator);

I indeed have a graph new with smaller points but I don't have URL anymore on every point.
Can anybody help me ?

[david.gilbert]

The XYDotRenderer doesn't have any code to generate chart entities, which is required to support tooltips and URLs. Which renderer was your chart using before you switched to XYDotRenderer?

[ahury]

it's an XYItemRenderer.

[david.gilbert]

Of course it is - XYItemRenderer is the *interface* that all renderers must implement. Which renderer *class* are you using?

[ahury]

Its a LineAndShapeRenderer

[david.gilbert]

Really? LineAndShapeRenderer does *not* implement XYItemRenderer.

[ahury]

If I want to make this code
XYDotRenderer dotRenderer=
(XYDotRenderer) jfreechart.getXYPlot().getRenderer();
I have this error
java.lang.ClassCastException: org.jfree.chart.renderer.xy.XYLineAndShapeRenderer.
that's why I say it was an XYLineAndShapeRenderer.
I don't create any renderer i think it's the renderer by default.. If there is one there!
In any case d I have no renderer in my import

[david.gilbert]

that's why I say it was an XYLineAndShapeRenderer.

I wish you had. If you want smaller shapes with this renderer, why don't you try calling setSeriesShape(int, Shape) and specify the shape you want. Hint: the shape you specify should be centered on (0, 0), e.g. new Rectangle2D.Double(-1.0, -1.0, 2.0, 2.0).

[ahury]

Thanks for your help I have an other question.
Is it possible to create an Y axis, which has his ticks increased all 500 and number label all 1000?