Download and parsing of SRTM4 elevation data.

Carlo de Franchis, Enric Meinhardt, Gabriele Facciolo, CMLA 2018

The main source code repository for this project is https://github.com/centreborelli/srtm4. It is written in Python. It is tested with Python 3.7, 3.8, 3.9 and 3.10.

srtm4 requires libtiff development files. They can be installed with apt-get install libtiff-dev (Ubuntu, Debian) or brew install libtiff (macOS).

Once libtiff is installed, srtm4 can be installed with pip:

pip install srtm4

In a Python interpreter:

>>> import srtm4
>>> longitude, latitude = 2, 48
>>> altitude = srtm4.srtm4(longitude, latitude)
>>> print(altitude)  # should be 174.613 (altitude in meters above the WGS84 ellipsoid)

In a shell:

GEOID_PATH=data ./bin/srtm4 2 48

For the crop function, if pyproj complains about the download of file, you can fix it manually with the command:

pyproj sync -v --file us_nga_egm96_15