Create H3 Grid: some issues

Awiener · December 15, 2024, 8:39pm

Hi,

tried to work with the Create H3 Grid node. I think there are some issues:

the output column is called “Geometry”, which leads to an error in the Geospatial View node, because the “G” is captial. Whereas all other nodes use “geometry” as output columns.

Despite stating that the node would union all input polygons (this is how I understand the following text)
grafik
is has an issue with multipolygons:
grafik
grafik

Thanks and cheers

kevin_sturm · December 16, 2024, 11:01am

Hello @Awiener,

Thank you for reaching out to the KNIME Forum and reporting unexpected behavior.

We took a look into this and do understand that this limits the usability and handling of the nodes. As of now, the node only supports a single object (polygon, multipolygon).
We opened ticket requests internally to address your points in a future release.

Best regards

xiaokang_fu · December 17, 2024, 6:04am

Hi @Awiener , We well fix this in our next release, you can check the update from here too.

xiaokang_fu · December 19, 2024, 3:43am

@Awiener Can you provide a workflow to generate this issue?

Awiener · January 5, 2025, 2:16pm

@xiaokang_fu

Sure, here you go.
H3_Multipolygons.knwf (16.4 KB)

First one: issue with multipolygon.
Second one: same but with two concatenated countries.

Thanks!

tobias.koetter · January 8, 2025, 8:44pm

Hello @Awiener ,
thanks again for reporting the issue and providing the example. We have fixed it with the 1.3.1 bug fix release which we published today. For further details see this post.
Bye
Tobias

Awiener · January 9, 2025, 7:35am

Thank you @tobias.koetter works fine now.

Just a really minor issue with the workflow from above. It looks like the western border of the view is a little bit out of control (zoom level 1 or 2)