Look up lat/lng from a given input file and append geohash/geohash-coordinates to the input data onto a output file:
| input | output |
|---|---|
| 42.6 -5.6 | 42.6 -5.6 ezs42e44yx96 |
| 42.6 -5.6 | 42.6 -5.6 ezs42e44yx96 42.60223388671875 -5.5975341796875 |
Install python3 and pip3
sudo apt install python3-pip
or (in case of ModuleNotFoundError: No module named 'pip._internal')
python3 -m pip install --upgrade pip
Install python-geohash
pip install python-geohash
Latest version of python-geohash may require python3.8 to run the script
python3 latlng2geohash.py -h/--help
TIPS:
Make sure to sort the input file on the lat and lng fields to reduce the processing time greatly.
The input must be 2 lines long or more as they are required to determine the presence of headers
Useful links to documentation and tools:
- This tool is based on python-geohash
- More info about geohashing Wikipedia
- Visual representation of geohashes
- Online geohashing
| Geohash length | Cell width | Cell height | ||
|---|---|---|---|---|
| 1 | ≤ | 5,000km | x | 5,000km |
| 2 | ≤ | 1,250km | x | 625km |
| 3 | ≤ | 156km | x | 156km |
| 4 | ≤ | 39.1km | x | 19.5km |
| 5 | ≤ | 4.89km | x | 4.89km |
| 6 | ≤ | 1.22km | x | 0.61km |
| 7 | ≤ | 153m | x | 153m |
| 8 | ≤ | 38.2m | x | 19.1m |
| 9 | ≤ | 4.77m | x | 4.77m |
| 10 | ≤ | 1.19m | x | 0.596m |
| 11 | ≤ | 149mm | x | 149mm |
| 12 | ≤ | 37.2mm | x | 18.6mm |
geohash length of 7
geohash length of 8
geohash length of 9
