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        "author": "Kyle Wilcox",
        "author_email": "kyle@axiomdatascience.com",
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        "classifiers": [
            "Development Status :: 5 - Production/Stable",
            "Intended Audience :: Developers",
            "Intended Audience :: Science/Research",
            "License :: OSI Approved :: MIT License",
            "Operating System :: OS Independent",
            "Programming Language :: Python",
            "Topic :: Scientific/Engineering"
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        "description": "# pygc  [![Build Status](https://travis-ci.org/axiom-data-science/pygc.svg?branch=master)](https://travis-ci.org/axiom-data-science/pygc)\n\n#### Great Circle calculations for Python 2/3 using Vincenty's formulae\n\n## Installation\n\n**pip**\n`pip install pygc`\n\n**conda**\n`conda install -c conda-forge pygc`\n\n**development**\n`pip install git+https://github.com/axiom-data-science/pygc.git`\n\n\n### Great Circle\n```python\nfrom pygc import great_circle\n```\n\n##### New point from initial point, distance, and azimuth\n```python\ngreat_circle(distance=111000, azimuth=65, latitude=30, longitude=-74)\n{'latitude': 30.41900364921926,\n'longitude': -72.952930949727573,\n'reverse_azimuth': 245.52686122611451}\n```\n\n##### Three new points in three different angles from an initial point\n```python\ngreat_circle(distance=[100000, 200000, 300000], azimuth=[90, 180, -90], latitude=30, longitude=-74)\n{'latitude': array([29.99592067, 28.1955554, 29.96329797]),\n'longitude': array([-72.96361148, -74., -77.10848799]),\n'reverse_azimuth': array([270.51817296, 360., 88.44633085])}\n```\n\n##### Three point south of three initial points (longitude shouldn't change much)\n```python\ngreat_circle(distance=[100000, 200000, 300000], azimuth=180, latitude=30, longitude=[-74, -75, -76])\n{'latitude': array([29.09783841, 28.1955554, 27.29315337]),\n'longitude': array([-74., -75., -76.]),\n'reverse_azimuth': array([360., 360., 360.])}\n```\n\n##### Three point west of three initial points (latitude shouldn't change much)\n```python\ngreat_circle(distance=[100000, 200000, 300000], azimuth=270, latitude=[30, 31, 32], longitude=-74)\n{'latitude': array([ 29.99592067, 30.98302388, 31.96029484]),\n 'longitude': array([-75.03638852, -76.09390011, -77.17392199]),\n 'reverse_azimuth': array([ 89.48182704, 88.92173899, 88.31869938])}\n```\n\n\n##### Starburst pattern around a point\n```python\ngreat_circle(distance=100000, azimuth=[0, 60, 120, 180, 240, 300], latitude=30, longitude=-74)\n{'latitude': array([ 30.90203788, 30.44794729, 29.54590235, 29.09783841, 29.54590235, 30.44794729]),\n 'longitude': array([-74., -73.09835956, -73.10647702, -74., -74.89352298, -74.90164044]),\n 'reverse_azimuth': array([ 180., 240.45387965, 300.44370186, 360., 59.55629814, 119.54612035])}\n```\n\n\n### Great Distance\n\nDistance between each pair of points is returned in meters.\n\n```python\nfrom pygc import great_distance\n```\n\n##### Distance and angle between two points\n```python\ngreat_distance(start_latitude=30, start_longitude=-74, end_latitude=40, end_longitude=-74)\n{'azimuth': 0.0, 'distance': array(1109415.6324018822), 'reverse_azimuth': 180.0}\n```\n\n##### Distance and angle between two sets of points\n```python\ngreat_distance(start_latitude=[30, 35], start_longitude=[-74, -79], end_latitude=[40, 45], end_longitude=[-74, -79])\n{'azimuth': array([0., 0.]),\n 'distance': array([1109415.63240188, 1110351.47627673]),\n 'reverse_azimuth': array([180., 180.])}\n```\n\n##### Distance and angle between initial point and three end points\n```python\ngreat_distance(start_latitude=30, start_longitude=-74, end_latitude=[40, 45, 50], end_longitude=[-74, -74, -74])\n{'azimuth': array([0., 0., 0.]),\n 'distance': array([1109415.63240188, 1664830.98002662, 2220733.64373152]),\n 'reverse_azimuth': array([180., 180., 180.])}\n```\n\n\n## Source\n\nAlgrothims from Geocentric Datum of Australia Technical Manual\n\nhttp://www.anzlic.org.au/icsm/gdatum/chapter4.html (Page is no longer\navailable)\n\nComputations on the Ellipsoid\n\nThere are a number of formulae that are available\nto calculate accurate geodetic positions,\nazimuths and distances on the ellipsoid.\n\nVincenty's formulae (Vincenty, 1975) may be used\nfor lines ranging from a few cm to nearly 20,000 km,\nwith millimetre accuracy.\nThe formulae have been extensively tested\nfor the Australian region, by comparison with results\nfrom other formulae (Rainsford, 1955 & Sodano, 1965).\n",
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