CASA Next Generation Infrastructure Prototype
Installation, setup and development rules for the CASA Next Generation Infrastructure
Conversion functions depend on casatools from CASA 6 which is currently compatible with Python 3.6 only. CASA 6 also requires FORTRAN libraries be installed in the OS. These are not included in the dependency list so that the rest of CNGI functionality may be used without these constraints.
In the future, the conversion module may be moved outside of the CNGI package and distributed separately.
python3 -m venv cngi source cngi/bin/activate #(maybe) sudo apt-get install libgfortran3 pip install --index-url https://casa-pip.nrao.edu/repository/pypi-casa-release/simple casatools==188.8.131.52 pip install cngi-prototype
conda create -n cngi python=3.6 conda activate cngi #(maybe) sudo apt-get install libgfortran3 pip install --index-url https://casa-pip.nrao.edu/repository/pypi-casa-release/simple casatools==184.108.40.206 pip install cngi-prototype
Installation from Source
git clone https://github.com/casangi/cngi_prototype.git cd cngi_prototype python3 -m venv venv source venv/bin/activate pip install wheel pip install -r requirements.txt python setup.py install --root=.
To avoid thread collisions, when using the Dask.distributed Client, set the following environment variables.
export OMP_NUM_THREADS=1 export MKL_NUM_THREADS=1 export OPENBLAS_NUM_THREADS=1
Building Documentation from Source
Follow steps to install cngi from source. Then navigate to the docs folder and execute the following:
sphinx-build -b html . ./build
View the documentation in your browser by navigating to:
You can import things several different ways. For example:
>>> from cngi import dio >>> xds = dio.read_image(...)
>>> from cngi.dio import read_image >>> xds = read_image(...)
>>> import cngi.dio as cdio >>> xds = cdio.read_image(...)
Throughout the documentation we use the variable name
xds to refer to Xarray DataSets.
xda may be used to refer to Xarray DataArrays. This is a "loose" convention only.
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