Coordinate Master help
Last updated Dec 2016
Main page

Coordinate system details page

Supported projections
- Albers Equal Area
- Azimuthal Equidistant
- Cassini
- Equal Area Cylindrical
- Eckert IV
- Eckert VI
- Equidistant Cylindrical
- Equidistant Conic
- Gall
- Lambert Conformal Conic
- Mercator
- Miller Cylindrical
- Mollweide
- Oblique Stereographic
- Polyconic
- Robinson
- Transverse Mercator
A complete list of the pre-defined coordinate systems is available here
Creating your own coordinate systems
If none of the coordinate systems in the app suit your purposes, you can copy the parameters from the closest one and then press the "Edit user projections" button which is the button at the bottom-center of the main page of the app. This button brings up the default text editor app that is installed on your Android device. (If none is installed, you will need to download one from Google Play. The text editor built into the ES3 file browser is one option).
Once you have the user_projections.txt file open, simply paste the contents of the clipboard to the bottom of the file and modify the coordinate system parameters to suit your needs. Then save the file, and re-start Coordinate Master. Once you have done this, your new coordinate system will be visible under the category "User Coordinate Systems" which is at the bottom of the category chooser list.
Note: Coordinate Master uses the "coordinate frame rotation" convention for the rotations in the "To WGS84 parameters". This convention is commonly used in Australia and the US.
But in Europe the "position vector rotation" convention is commonly used. The only difference between these conventions is that the signs of the three rotation values (rx, ry, rz) are reversed.
Links to additional information
www.binaryearth.net