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GeoCAT-f2py wraps, in Python, the compiled language implementations of some of the computational functions found under the GeoCAT-comp umbrella.

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GeoCAT-comp is both the whole computational component of the GeoCAT project and a single Github repository as described in GeoCAT-comp. As the computational component of GeoCAT, GeoCAT-comp provides implementations of computational functions for operating on geosciences data. Many of these functions originated in NCL are pivoted into Python with the help of GeoCAT-comp; however, developers are welcome to come up with novel computational functions for geosciences data.

Many of the computational functions in GeoCAT are implemented in a pure Python fashion. However, there are some others that are implemented in Fortran but wrapped up in Python. To facilitate contribution, the whole GeoCAT-comp structure is split into two repositories with respect to being pure-Python or Python with compiled codes (i.e. Fortran) implementations. While pure Python implementation as well as user API are implemented within GeoCAT-comp, Python codes that calls the Fortran functionality with the help of Numpy's f2py are handled within GeoCAT-f2py (i.e. this repository).

GeoCAT-f2py

GeoCAT-f2py wraps, in Python, the compiled language implementations of some of the computational functions found under the GeoCAT-comp umbrella. The compiled language functions contained in GeoCAT-f2py (i.e. this repository) as Fortran subroutines are wrapped up in corresponding Python wrapper files in the same repository with the help of Numpy.f2py's signature files (.pyf).

Not all computational functions in GeoCAT computational component have compiled language implementations; therefore, developers basing their implementations entirely in Python need not concern themselves with this repo; instead, they should engage with GeoCAT-comp repo as it invisibly imports GeoCAT-f2py. However, for those functions that are implemented in Fortran, this repo provides a Python interface to those functions via a Numpy.f2py wrapper.

Documentation

GeoCAT Homepage

GeoCAT Contributor's Guide

GeoCAT-comp documentation on Read the Docs

Installation and build instructions

Please see our documentation for installation and build instructions.

Xarray interface vs NumPy interface

GeoCAT-f2py provides a high-level Xarray interface under the geocat.f2py namespace. However, a stripped-down NumPy interface is used under the hood to bridge the gap between NumPy arrays and the compiled language data structures. These functions are accessible under the geocat.comp.f2py namespace, but are minimally documented and are intended primarily for internal use.

Citing GeoCAT-f2py

NOTE: If you used GeoCAT-f2py through GeoCAT-comp, it is recommended that you cite GeoCAT-comp. Please refer to GeoCAT-comp README for that purpose or GeoCAT Citation page for general information about citing GeoCAT software packages.

Hiwever, if you used GeoCAT-f2py as a standalomne software tool, cite GeoCAT-f2py using the following text:

<> Visualization & Analysis Systems Technologies. (Year). Geoscience Community Analysis Toolkit (GeoCAT-f2py version <version>) [Software]. Boulder, CO: UCAR/NCAR - Computational and Informational System Lab. doi:10.5065/A8PP-4358.

Update the GeoCAT-f2py version and year as appropriate. For example:

<> Visualization & Analysis Systems Technologies. (2021). Geoscience Community Analysis Toolkit (GeoCAT-f2py version 2021.04.0) [Software]. Boulder, CO: UCAR/NCAR - Computational and Informational System Lab. doi:10.5065/A8PP-4358.

For further information, please refer to GeoCAT homepage - Citation.

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