How can I create a spatial binning similar to or directly using Uber h3 from QGIS UI?
Are there plugins available to achieve the desired task?
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4If you explain how Uber H3 does spatial binning, you're more likely to get a useful answer. Otherwise the only people who can answer would be those who know both Uber H3 and QGIS, which may be a very small number of people.– cskCommented Feb 1, 2019 at 17:36
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It looks like eng.uber.com/h3 and mostly consists of hexagons. A solution in python would also be great.– Georg HeilerCommented Feb 1, 2019 at 18:42
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4 Answers
You can play with it using my #30DayMapChallenge hexagon demo https://github.com/ThomasG77/30DayMapChallenge/blob/master/day4_hexagons/data/h3-processing.py
Except the fact I do no use an UI, I combine both QGIS and Uber H3 Python library.
I clearly do not use all parts of the H3 Python library. I suppose the example could help you getting started.
Edit 2022-05-20
New QGIS plugin "H3 Toolkit" unrelated to me but doing more or less the same. Although we provide the link, install it directly from QGIS plugins list.
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Thanks Thomas. You're implementation was very helpful. I adapted it to generate hex grids for the extent of an input layer: github.com/maphew/code/blob/master/gis/qgis/… Commented Feb 3, 2021 at 7:00
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Thanks mat wilkie. I cant run the script.I get the error: File "<string>", line 55, in <module> IndexError: list index out of range– TorstenCommented Mar 2, 2021 at 20:03
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At github.com/maphew/code/blob/master/gis/qgis/…, the code is
mylayer = QgsProject.instance().mapLayersByName(area_of_interest)[0]. It meansQgsProject.instance().mapLayersByName(area_of_interest)is an empty list[]and you can't get the first element with[0]. That's why it throws an error Commented Mar 2, 2021 at 22:40 -
Thanks Thomas. That bug is now fixed, and a couple more besides. Results posted at gis.stackexchange.com/a/408312/108 Commented Aug 14, 2021 at 5:58
I adapted @ThomasG77's 30 day challenge script into something that can be run from the Qgis processing toolbox.
Using Uber's H3 hex grid system in Qgis
https://github.com/maphew/code/tree/master/gis/qgis - h3-grid-from-layer.py
Usage
after Preparation has been completed
From Qgis:
- Select a template layer in table of contents to get extent from
- Optionally select specific features
- Processing tool box >> Open existing script: h3-grid-from-layer.py
- OR: Plugins >> Python console >> Open editor >> load script: h3-grid-from-layer.py
- Edit variables (particularly min/max resolution levels)
- Run
There is an error message of "it seems there is no valid script to run", but it works anyway.
answered Aug 14, 2021 at 5:57
There's the official https://github.com/uber/h3-py
Python bindings for H3, a hierarchical hexagonal geospatial indexing system https://uber.github.io/h3/
but I haven't tried it myself.
answered Feb 2, 2019 at 16:46
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And github.com/conda-forge/h3-py-feedstock the conda package Commented Oct 23, 2020 at 14:33
Use the Create Grid tool in QGIS, and select hexagons.
For a more thorough, but still brief walk-through, see Jonathan Soma's blog.
(This is for creating a hex grid, it will not be specific to Uber's H3 grids. If you know the positioning and spacing of that grid you could use those numbers with this tool.)
