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Deformed graph when visible range is changed (extended)

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I’m having difficulties understanding the behaviour of a graph with the following axes:

                            <s:LogarithmicNumericAxis DrawMajorBands="False"   

                            <s:NumericAxis  DrawMinorGridLines="False" 
                                            VisibleRange="{Binding FftDroiteGaucheYAxisRange, UpdateSourceTrigger=PropertyChanged}"/>

With XAxis VisibleRange set to “0.01,5” the graph looks like this:
enter image description here

When I change it to a bigger range say “0.01,11” or more FOR THE SAME DATA it gets deformed and looks like:
enter image description here

I tried removing VisibleRange in YAXis but it doesn’t seem to work. Please help.

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Best Answer

Hi Kilosa,

For graphs with XAxis Type = LogarithmicNumericAxis, you need to set ResamplingMode.None on the FastLineRenderableSeries. This is because the X-Data spacing is determined by the axis, not the data, so it is difficult to accurately predict data distribution and choose the correct resampling algorithm.

This is a case we should detect automatically with ResamplingMode.Auto so I will file a bug report at the same time.

Let me know if this helps,

Best regards,

  • Kilosa Magali
    Worked perfectly, Thanks Andrew.
  • Andrew Burnett-Thompson
    you’re very welcome! If there’s anything else we can do to help, just let me know. Best regards,
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