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    "info": {
        "author": "Michael Hirsch, Ph.D.",
        "author_email": "scivision@users.noreply.github.com",
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        "classifiers": [
            "Development Status :: 5 - Production/Stable",
            "Environment :: Console",
            "Intended Audience :: Science/Research",
            "Operating System :: OS Independent",
            "Programming Language :: Fortran",
            "Programming Language :: Python :: 3.6",
            "Programming Language :: Python :: 3.7",
            "Programming Language :: Python :: 3.8",
            "Topic :: Scientific/Engineering :: Atmospheric Science"
        ],
        "description": "[![DOI](https://zenodo.org/badge/33064474.svg)](https://zenodo.org/badge/latestdoi/33064474)\n\n[![Actions Status](https://github.com/space-physics/igrf12/workflows/ci/badge.svg)](https://github.com/space-physics/igrf12/actions)\n\n[![Python versions (PyPI)](https://img.shields.io/pypi/pyversions/igrf12.svg)](https://pypi.python.org/pypi/igrf12)\n[![PyPi Download stats](http://pepy.tech/badge/igrf12)](http://pepy.tech/project/igrf12)\n\n# IGRF 2012 in Python\n\nInternational Geomagnetic Reference Field IGRF12 and IGRF11...in simple, object-oriented Python &ge; 3.6 or Matlab.\n\n![image](tests/incldecl.png)\n\n![image](tests/vectors.png)\n\n## Install\n\nA Fortran compiler is required, such as `gfortran`:\n\n* Linux: `apt install gfortran`\n* Mac: `brew install gcc`\n* [gfortran for Windows](https://www.scivision.dev/windows-gcc-gfortran-cmake-make-install/) (MinGW)\n   Windows only: from Powershell:\n\n   ```posh\n   echo \"[build]`ncompiler=mingw32\" | Out-File -Encoding ASCII ~/pydistutils.cfg\n   ```\n\nTo get the IGRF12 development version, `git clone` and then:\n```sh\npython -m pip install -e .\n```\n\nOtherwise, for the latest release from PyPi:\n```sh\npython -m pip install igrf12\n```\n\nOptionally, test the install with:\n```sh\npytest\n```\n\n### Windows\nIf you get ImportError on Windows for the Fortran module, try from the `iri2016` directory:\n\n```posh\ndel *.pyd\npython setup.py build_ext --inplace --compiler=mingw32\n```\n\n\n## Example\nTo make the plots in this readme:\n```sh\nigrf12\n```\n\nusing as a Python module at geodetic coordinates 65N, 148W:\n```python\nimport igrf12\n\nmag = igrf12.igrf('2010-07-12', glat=65, glon=-148, alt_km=100)\n```\nreturns an `xarray.Dataset`:\n```\n<xarray.Dataset>\nDimensions:  (alt_km: 1)\nCoordinates:\n  * alt_km   (alt_km) int64 100\nData variables:\n    north    (alt_km) float64 1.122e+04\n    east     (alt_km) float64 4.148e+03\n    down     (alt_km) float64 5.302e+04\n    total    (alt_km) float64 5.436e+04\n    incl     (alt_km) float64 77.29\n    decl     (alt_km) float64 20.29\n```\n\nThe IGRF model may be specified with the `igrf12.igrf(model=)` option:\n* `11`: IGRF11\n* `12`: IGRF12\n\n### Matlab\nMatlab can seamlessly call Python modules, as in `igrf12.m`.\nInstead of the $1000 Aerospace Toolbox, use this free IGRF12 for Matlab.\n\n## Reference\n\nIf you only want the plain Fortran program, you can do:\n\n```sh\ncmake -B build\n\ncmake --build build --parallel\n\n./testigrf\n```\n\n### References\n\n-   [IGRF12 Fortran code](http://www.ngdc.noaa.gov/IAGA/vmod/igrf12.f)\n-   [IGRF11 Fortran code](http://www.ngdc.noaa.gov/IAGA/vmod/igrf11.f)\n-   WMM2015 [inclination map](https://www.ngdc.noaa.gov/geomag/WMM/data/WMM2015/WMM2015_I_MERC.pdf)\n-   WMM2015 [declination map](https://www.ngdc.noaa.gov/geomag/WMM/data/WMM2015/WMM2015_D_MERC.pdf)",
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