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Questions tagged [h3]

H3 is an open source geospatial indexing system using a hexagonal grid that can be subdivided into finer and finer hexagonal grids.

Features

  • Simple, fast api for converting between lat/long coordinates and hexagon addresses
  • Multiple hexagon resolutions with hierarchical relationships between them
  • A library of common algorithms including neighbor traversal, compact and uncompact transformations, and converting between hexagon sets and polygons

The library is written in C with bindings available for other languages.

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How to install "h3" library for H3 geospatial indexing system in R

My understanding is that the "H3 geospatial indexing system" is a kind of "coordinate system" developed by Uber, whose main feature is that it is based on a system of hierarchical hexagons. "he" is a library in R which could help one to work with…
Guibor Camargo Salamanca
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Is there a way to find the geo coordinates of all the buildings in a city?

I am working with the Uber H3 library. Using the poly fill function, I have populated an area with H3 indexes for a specific resolution. But I don’t need all the indexes. I want to identify and remove those indexes which are getting plotted on…
yash7696
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Better pentagon/hexagon area ratio

In the Goldberg polyhedron used in H3 {5+,3}_{a,b} with {a,b}={2,2} or {8,2}, the pentagon area to hexagon area ratio is of about 0.66. Do you know a way that I can modify a little the pentagon shape (and by conscequences the 5 coniguous hexagons of…
Jean-Eric
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How to import h3-py (uber) on windows after installing it?

I want to ask about h3-py installation on windows I have tried to install h3 on windows with python I ran the command pip install h3 and it is installed. After install, when I try to import it, i get this error: from h3 import h3 File…
Nour elhouda Khettache
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H3 DGGS : General questions

Good afternoon, I'm a newbie to H3. Before reading deeply the documentation and go further on tests with H3, I'm taking the liberty to ask you general questions regarding H3.In advance sorry if my questions seem naive or clumsy. Which bindings are…
user35117
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Calculate surrounding index keys

I'm attempting to retrieve H3 index keys directly adjacent to my current location. I'm wondering if this can be done by mutating/calculating the coordinate directly or if I have to use the library bindings to do this? Take this…
ddibiase
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Is the geoToH3 function as pseudo-code available?

Is there a (python) or pseudocode example of geoToH3 available? I just need this function and would like to avoid installing the library on my target environment (AWS GLUE, PySpark) I tried to follow the javascript implementation but even that used…
Jan
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H3 index (resolution 8) and kepler.gl maping issue

I am trying to map the attached h3index dataset in kepler.gl. I've used the following scala function to generate these at a resolution index of 8. val geoToH3 = udf{ (latitude: Double, longitude: Double, resolution: Int) => …
Dhruv Chaudhary
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Installing h3 on Windows correctly

I'm getting an error when I try to installed the h3 package via pip. I running Python 3.6. Here's the error: Command "d:\pyth2\python.exe -u -c "import setuptools, …
bluelight
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relevant hexids inside a hexagon

i am generating a set of hex ids via "h3.geoToH3(lng, lat, res)". after that i am creating a FeatureCollection via "let polygons = geojson2h3.h3SetToFeatureCollection(hexIds)" When i am clicking on a hexagon on the map i just want the ids of the…
Stefan Kandlbinder
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Is corse parent == parent index?

In the H3 library, you can find the corse parent index of a H3 hexagon using the h3ToParent method. Is the corse parent the same as the parent? If not how do I find the true parent index?
joshlk
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How do I configure the SimpleFeatureTypeBuilder to build center-facing gnomonic projected polygons on a WGS84 map?

I am trying to tile historical political territories with H3 grid-defined tiles using Geotools. My input shapefiles use the WGS84/EPSG:4326 CRS. H3 hex grids are center-facing gnomonic projections, but I'm assuming they still use the WGS84 CRS.…
CW Dillon
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The fractal nature of H3

I have used H3 for a while now and I was curious if anyone had made any link to the fractal nature of H3. This post is more a mini-blog at this point. My questions are: did anyone study or identify the connection of H3 with fractal tiles (Gosper…
T. Hunter
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H3 polyfill is skipping the areas near the boundary I am trying to polyfill. (Python)

Is there a way to polyfill edge to edge or as much as possible (Res 8) without increasing the resolution. Black boundary is the polygon boundary I am trying to polyfill completely
kleo188
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