Create H3 Grid: Resolve Polygons that outgrow the Edge of the Map

[sturmkev]

Whenever the node is used to create hexagonal polygons and those polygons eventually outgrow the edge of the map (180°W/180°E), the single polygon gets drawn oddly. This obviously is a bigger issue the larger the hexagons are (the lower the zoom level is).

I couldn't find any old ticket about this, even though I remember we faced this before.

However, with the node, this works fine and one can even draw a rectangle over "multiple worlds".

Here is an example workflow to demonstrate the issue:
H3_Multipolygons.knwf.zip

Related Forum Thread:
https://forum.knime.com/t/create-h3-grid-some-issues/85299/7?u=kevin_sturm

[wybert]

It could be an issue from H3-py, please also see here one of the hex indexes for this bug could be 082176ffffffffff

Two possible solutions:

1. shift the points to another side
2. split the polygons