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Archived discussions · Captured October 28, 2026

PolySelectTool covers same area at all zoom levels

Community Support
Andrew_Foltz-Morriso
Andrew_Foltz-Morriso

I’m having an issue with the way PolySelectTool behaves on a tilemap. I’m trying to develop a graphic incorporating arbitrarily precise selection of points by zooming in and out between points selected. However, unlike BoxSelectTool and LassoSelectTool, the selection area does not respect the scale of the map. Below is a before/after screenshot of what happens during the selection process.


Changing the order in which the set of tools is initialized or called when creating the plot doesn’t affect the behavior. I’m unsure how to proceed- any help is much appreciated. Can also reproduce minimal example for opening a GitHub issue if need be.

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Bryan
Bryan

Right, this is a bug. I've known about it in the back of my head and I thought there was an issue, but I can't find one now. Please submit a bug report at:

  Issues · bokeh/bokeh · GitHub

Hopefully won't be too onerous to fix.

Thanks,

Bryan

···

On Jan 30, 2017, at 12:48 PM, Andrew Foltz-Morrison <thefomo@gmail.com> wrote:

I'm having an issue with the way PolySelectTool behaves on a tilemap. I'm trying to develop a graphic incorporating arbitrarily precise selection of points by zooming in and out between points selected. However, unlike BoxSelectTool and LassoSelectTool, the selection area does not respect the scale of the map. Below is a before/after screenshot of what happens during the selection process.

Changing the order in which the set of tools is initialized or called when creating the plot doesn't affect the behavior. I'm unsure how to proceed- any help is much appreciated. Can also reproduce minimal example for opening a GitHub issue if need be.

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Andrew_Foltz-Morriso
Andrew_Foltz-Morriso

Ok, thanks. Issue open over at: https://github.com/bokeh/bokeh/issues/5829

···

On Monday, January 30, 2017 at 1:52:20 PM UTC-5, Bryan Van de ven wrote:

Right, this is a bug. I’ve known about it in the back of my head and I thought there was an issue, but I can’t find one now. Please submit a bug report at:

    [https://github.com/bokeh/bokeh/issues](https://github.com/bokeh/bokeh/issues)

Hopefully won’t be too onerous to fix.

Thanks,

Bryan

On Jan 30, 2017, at 12:48 PM, Andrew Foltz-Morrison the...@gmail.com wrote:

I’m having an issue with the way PolySelectTool behaves on a tilemap. I’m trying to develop a graphic incorporating arbitrarily precise selection of points by zooming in and out between points selected. However, unlike BoxSelectTool and LassoSelectTool, the selection area does not respect the scale of the map. Below is a before/after screenshot of what happens during the selection process.

Changing the order in which the set of tools is initialized or called when creating the plot doesn’t affect the behavior. I’m unsure how to proceed- any help is much appreciated. Can also reproduce minimal example for opening a GitHub issue if need be.

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