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Pie: Customize slice label position #2515

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#2567
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Pie: Customize slice label position#2515
#2567
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Good First IssueThis issue has limited complexity and may be a good start for new contributorsHelp WantedScott won't do this soon, but PRs from the community are welcome!
@swharden

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@swharden
swharden
opened on Mar 29, 2023

Presently labels are centered on pie slices:

https://scottplot.net/cookbook/4.1/category/plottable-pie/#slice-values

ScottPlot/src/ScottPlot4/ScottPlot/Plottable/PiePlot.cs

Lines 151 to 154 in c1bd47a

// record where and what to label the slice
double sliceLabelR = 0.35 * diameterPixels;
labelXs[i] = (boundingRectangle.X + diameterPixels / 2 + xOffset + Math.Cos(angle) * sliceLabelR);
labelYs[i] = (boundingRectangle.Y + diameterPixels / 2 + yOffset + Math.Sin(angle) * sliceLabelR);

However, it would be great if label position (radius) could be customized with a public property to let users customize its placement. This in combination with being able to customize the size of the pie radius would allow users to place labels outside the pie.

This idea came from a question from @nuelle16 in #2510

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