How can I do XYPlot with index in xAxis and yAxis correlated?

[المشرف العام]

I am using XYZDataset, XYBlockRenderer and XYPlot. But I must have index correlated. I mean, a z value must be fixed in x_index=0 and y_index=0 point.

(0,0) = z;

It must not depend on x and y[j] axis values.

I am using jfreechart.



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