The ymraster package contains tools for:
- manipulating raster images,
- perform classifications on these images.
For example, you can simply create a Raster instance and compute the NDVI
with the following simple commands.
>>> from ymraster import Raster
>>> raster = Raster('data/l8_20130425.tif')
>>> ndvi = raster.ndvi('l8_20130425_ndvi.tif', idx_red=4, idx_nir=5)You need to have the following tools installed and properly set up:
- Orfeo Toolbox (OTB) for most raster computations,
- GDAL for reading and writing rasters,
- NumPy for matrix & numeric computations,
- scikit-learn for classifications.
Surely, there are already binary packages for these tools for your Linux distribution.
Note that you have to set some environment variables in order for OTB to work.
Add the following lines to your ~/.bashrc and adapt them to your
environment:
export PYTHONPATH=${PYTHONPATH}${PYTHONPATH:+:}/usr/lib/otb/python
export ITK_AUTOLOAD_PATH=/usr/lib/otb/applications
Simply clone the repository in a folder of your choice:
$ cd </path/to/folder> # eg. ~/.local/opt $ git clone https://github.com/ygversil/ymraster.git
Then install this into your environment.:
$ cd ymraster $ pip install -e [--user] ./
Now you can import ymraster in Python.
>>> import ymraster