P0: Oddly drawn polygons

[seasmith]

There are at least three oddly drawn polygons (US counties) in the image below: one in Alaska and two in the contiguous 48 states. This was produced with the kepler.gl website.

The was geojson file was originally an sf object stored in a .RData file (R language) - subsequently converted to geojson.

I attempted to replicate this problem with the geojson file in D3 v4 (seen here), but it did not produce the same oddly drawn polygons.

I have the geojson file, kepler config file, and D3 attempt contained within this gist.

[rsimon]

I'm seeing the same issue, although on a more massive scale :-)

I also used the kepler.gl Website. Uploaded the data as a CSV, with a geometry column containing WKT.

To keep things small, I've pasted a CSV with a single example (shown below) in this gist. If it's helpful, I'm happy to share the full CSV. Just let me know!

[heshan0131]

This should be fixed once we upgrade to deck.gl v5

[guidorice]

@heshan0131 I have noticed this too with some geojson files. Is this because of the polygon winding order, or something else? I tried running https://github.com/mapbox/geojson-rewind to fix a file, but still get the same rendering problem.

btw thanks for confirming a fix is coming in deck.gl 5 👍

[palamago]

Indeed. Fixed with latest version of deck.gl. You can close this issue.

[seasmith]

Fixed with deck.gl v5.