OvertureMaps / io-site

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Duplicated and shifted division areas in Switzerland #167

Open GwenaelleSa opened 1 week ago

GwenaelleSa commented 1 week ago

Description

When consulting division area in Switzerland, I noticed that the polygons seem duplicated and slightly different. Sometimes, it seems they are shifted and some other times, it's like to dataset at different resolutions are displayed.

precision_boundaries

What browser are you seeing the problem on? What version are you running?

Microsoft Edge 129.0.2792.52

The OS you're using

Win10

Steps to reproduce

  1. Go to the Overture Map Explorer anywhere in Switzerland (for example here)
  2. Display the division area only for more visibility.

GERS ID of the entity in question (if applicable)

No response

The browser URL at the time you encountered the bug

https://explore.overturemaps.org/#10.04/46.5048/8.5998/0/8

GwenaelleSa commented 2 days ago

After some more visualisation, I understand that the problem comes from the "county" subtype. This subtype does not share the same boundaries as the other subtypes.