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coorblimey is an open source Python3 library to transform geocentric coordinates to geographic, and vice versa.

Project description

Code Climate https://circleci.com/gh/lo-ise/coorblimey.png?style=shield

What is it?

coorblimey is an open source Python3 library to transform geocentric coordinates to geographic, and vice versa.

Formulas for the calculations have been taken from:

Datums and Map Projections: For Remote Sensing, GIS and Surveying, Second Edition, by Jonathan IIiffe (Editor), Roger Lott.

Results were checked against this handy tool.

In it’s present state…

… it only does the geocentric to geographic bit, and only has the ability to do this with either GRS80 or WGS84 ellipsoids.

It outputs latitude, longitude and height above ellipsoid. The precision of this for latitude and longitude is 10 decimal places. For height, to the millimetre.

Installation

Easy hopefully, just…

pip install coorblimey

Usage

You can either use this as a command line tool, or you can import it into your python programs…

… as a command line tool

coorblimey -t to_geographic -x 1418595 -y -689557 -z -6159338 -e GRS80

This will give:

Geographic coordinates (GRS80)
lat: -75.7283616724, lon: -25.9236668699, h: 30.705

… in Python programs

from coorblimey.geocentrics import Geocentrics

geo      = Geocentrics(1418595, -689557, -6159338, ellipsoid='GRS80')
latlongs = geo.make_geographic()

latlongs with be a list [lat, lon, z]

Project details


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