Hi,

Refer to the attachment, i know the yellow point's coordinate is (0, 0) ,

now I have a requirement to draw a rectangle using GDI+ ,

and the rectangle's position is dependent to blue point in the attachment image,

how can i get the blue point's coordinate?



Thanks, Feng

Hi Feng,

Check out the custom drawing example - All Examples\Custom Painting - it shows how to tranform scale coordinates to 2D view coordinates. To get the axis ranges at runtime you can use:

NRange1DD rangeX = chart.Axis(StandardAxis.PrimaryX).Scale.RulerRange;
NRange1DD rangeY = chart.Axis(StandardAxis.PrimaryY).Scale.RulerRange;

Note that the chart has to be calcuated.

Hope this helps - let us know if you meet any problems.

Best Regards,
Nevron Support Team