Elixir NIF Bindings for the Rust NetCDF library
If available in Hex, the package can be installed
by adding netcdf to your list of dependencies in mix.exs:
def deps do
[
{:netcdf, "~> 0.2.0"}
]
endFor usage, you don't need any dependencies installed.
The library uses :rustler_precompiled to fetch compiled versions for the following targets:
If you want to compile locally or if you are running on an unsupported target,
you must set NETCDF_BUILD=true in your environment, and follow the instructions below.
Before compiling, you also must ensure that the following dependencies are installed on your system:
On Ubuntu:
apt install libhdf5-serial-dev libnetcdf-dev
On macOS:
brew install netcdf-cxx, which will also bring hdf5 as a dependency
Conda can also be used to install the dependencies instead:
conda install -y -c conda-forge libnetcdf=4.8.1 hdf5=1.12.1
echo "HDF5_DIR=${CONDA_PREFIX}"
echo "NETCDF_DIR=${CONDA_PREFIX}" >> $GITHUB_ENV
echo "RUSTFLAGS=-C link-args=-Wl,-rpath,$CONDA_PREFIX/lib" >> $GITHUB_ENVAlthough not necessary for the library to work, ncks is helpful for downloading .nc files in the correct way,
as well as reading their contents for header and format exploration.
On Ubuntu, you can install it using: apt install nco
On macOS, you can install it using: brew install nco
A NetCDF file can be loaded into Elixir with the following command:
filename = # Elixir string with the path to the NetCDF file
{:ok, file} = NetCDF.File.open(filename)We can inspect its variables in the struct's :variables field.
Finally, variables can be loaded as follows:
# loading the first variable from the file
variable_name = hd(file.variables)
{:ok, variable} = NetCDF.Variable.load(file, variable_name)We are very thankful for the many contributors
This library follows Semantic Versioning
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