Numeric stability about d3-geo-voronoi HOT 8 OPEN

Not closed :(

from d3-geo-voronoi.

Still seems to be ongoing ?

• I'm having around 700 points in the same city, and when performing the geoVoronoi, it gives out some polygons which are overlaping, especially where points are near together, so I filtered out nearby points, but this divises my number of points by 2 and I'd like to treat them all.

• I also had some polygons going far away, but solved it thanks to that tip : #11 (comment)

from d3-geo-voronoi.

from d3-geo-voronoi.

Here first the one without projection :

Then with the reprojection:

zoomed (in the red circle you can see overlapping polygons):

from d3-geo-voronoi.

Thanks. Can you share the actual data? Without seeing the coordinates I can't tell if the problem comes from the computation in d3-geo-voronoi, or from the rendering in leaflet/geojson.io.

from d3-geo-voronoi.

Here I send you a subset (with the points and voronois), it reproduces the behaviour :
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from d3-geo-voronoi.

from d3-geo-voronoi.

It seems to me as if the issue comes when there are 2 points with same lat/lng (with 4 decimals precision).
I stumbled upon another strange case:
https://observablehq.com/d/a39da27426b7afd9

from d3-geo-voronoi.