Map Algebra with NumPy

Inspired by the ARC/INFO GRID implementation of Map Algebra.

Basic Usage

pip install glidergun

Example:

from glidergun import grid

dem = grid("cop-dem-glo-90", (137.8, 34.5, 141.1, 36.8))
hillshade = dem.hillshade()

dem.save("dem.tif")
hillshade.save("hillshade.tif", "uint8")

With Segment Anything Model (larger dependency download)

CPU-only:

pip install glidergun[torch]

GPU (NVIDIA CUDA):

Python 3.14:

pip install --index-url https://download.pytorch.org/whl/cu126 torch torchvision
pip install glidergun[torch]

Python 3.10 ~ 3.13:

pip install --index-url https://download.pytorch.org/whl/cu124 torch torchvision
pip install glidergun[torch]

Example:

from glidergun import stack

bing = stack("microsoft", (-123.164, 49.272, -123.162, 49.273), max_tiles=100)
bing.save("vancouver.tif")

sam = bing.sam("tree", "house", "car")
sam.to_geojson().save("vancouver.json")

ArcGIS

"%LOCALAPPDATA%\ESRI\conda\envs\arcgispro-py3-clone\python.exe" -m pip uninstall -y glidergun torch torchvision
"%LOCALAPPDATA%\ESRI\conda\envs\arcgispro-py3-clone\python.exe" -m pip install --index-url https://download.pytorch.org/whl/cu124 torch torchvision
"%LOCALAPPDATA%\ESRI\conda\envs\arcgispro-py3-clone\python.exe" -m pip install glidergun[torch]

QGIS

"C:\Program Files\QGIS 3.44.10\apps\Python312\python.exe" -m pip uninstall -y glidergun torch torchvision
"C:\Program Files\QGIS 3.44.10\apps\Python312\python.exe" -m pip install --index-url https://download.pytorch.org/whl/cu124 torch torchvision
"C:\Program Files\QGIS 3.44.10\apps\Python312\python.exe" -m pip install glidergun[torch]