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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.

120 questions
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pandas sum of value for nearest matching neighbors in area

I have two data frames. One is structured like: id,value the second one: id, neighbor_1, neighbor_2, neighbor_3, neighbor_4, neighbor_5, ... Now I want to lookup for each id in the neighborhood data frame for each neighbor the sum of the…
Georg Heiler
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Using Deck.GL as Webpack external

I'm currently developing two different React applications which use Deck.GL to render two maps, each with a different type of layer. When using them as standalone they both work perfectly, however, when the two get mounted in the same parent…
Oriol_IL
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H3 hexagons render with swapped lat, long in kepler.gl

I want to plot H3 hexagons. Of Austria. Download and unzip https://biogeo.ucdavis.edu/data/gadm3.6/gpkg/gadm36_AUT_gpkg.zip The full code is available at https://gist.github.com/geoHeil/b5b74887e20e4b659d4bb693a700a402 generates to generate hexagons…
Georg Heiler
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Safe to truncate .in file extension for C header file?

I've imported a C library into my Swift project (in Xcode) from Uber's H3 (their geospatial library). Everything works as expected, however, the main header file has a .in file extension suffix which I had to truncate from h3api.h.in to h3api.h. I…
lurning too koad
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Converting h3 hex id to polygon in python

I'm trying to take a h3 hex id and convert it to a polygon to use in a geodataframe (and eventually export as a shapefile). All of the methods in h3 documented online don't seem to work for me, and cannot figure out what method to use. I'm using h3…
Geoff Perrin
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plot h3 hexagons with folium

I´m trying to plot some h3 hexagons with folium using .explore Here is my code: B['h3_code'] = B.apply(lambda row: h3.geo_to_h3(row['latitude_Destino'], row['longitude_Destino'], 8), axis=1) desthex =…
FG85
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How do I format the geojson data so that it is accepted by Mapbox

I have a geoJson of hex indexes, which I am trying to render on to mapbox. Here is my code (ignore the indentation): export default class App extends Component { constructor() { super(); const hexagons = ['8928308280fffff',…
mohsan123
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How to populate world map with hexagons Mapbox

I want to make an interactive app where users can view crime rates in their area by pulling in geo-data from the met police website. I want to display hexagons across the map (either through using H3 Uber library, or an alternative) but essentially…
mohsan123
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How to install h3-py (from uber) with mamba?

I have recently switched to mamba as a package installer and am now trying to install h3-py into an environment. I have tried several ways, first using: mamba install h3-py but then it says encountered problems while solving: - nothing provides…
jchristiaanse
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How to calculate the average distance between 2 neighboring H3 Cells?

I'm using the Uber H3 Library for Java https://github.com/uber/h3-java I'm trying to figure out what is the average distance between 2 neighboring H3 cells of resolution 15 (the distance between their respective center points, or 2 x apothem). I'm…
Chris
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calculate distance between latitude longitude columns for pandas data frame

I am trying to apply this code: import h3 coords_1 = (52.2296756, 21.0122287) coords_2 = (52.406374, 16.9251681) distance = h3.point_dist(coords_1, coords_2, unit='km') distance to a pandas dataframe. This is my not working attempt. data =…
cs0815
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Build failed - h3

Installing h3 throws back an error pip install h3 Error log when trying to install h3 (uber-api). Building failed is what I got in multiple attempts. Try to help me with some solution Collecting h3 Using cached h3-3.7.3.tar.gz (17.3 MB) Installing…
Mohammed Shammeer
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How to polyfill a Multi-polygon in H3?

I have a set of multipolygons in GeoJSON format, for example: { "type": "MultiPolygon", "coordinates": [ [[[102.0, 2.0], [103.0, 2.0], [103.0, 3.0], [102.0, 3.0], [102.0, 2.0]]], [[[100.0, 0.0], [101.0, 0.0], [101.0, 1.0], [100.0, 1.0],…
Dakshin
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calculating geospatial indexes for h3 at any given resolution

I am just starting out with Uber's h3geo (JavaScript), and am getting half the number of indexes at every resolution than what the docs suggest. const nw = [-180, 90]; const ne = [ 180, 90]; const se = [ 180, -90]; const sw = [-180, -90]; let rect…
punkish
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H3 getting started

I'm new to geospatial indexing and found H3 to be really interesting. Currently messing around with the several different functions on API, but my question is how do I render the H3 cells to a map? What map do you suggest, and how do I go about…
mohsan123
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