My custom projection does not appear in the projection list

Occurrence

I've added a custom projection line to my MAPINFOW.PRJ but it does not appear in the select projection dialog box's list.

Solution

This issue is resolved in the Discover 2017 Update version or later, as the 2 PRJ files are kept in sync. Also there is a new Projection Editor tool to add custom projections, and update both files.


Discover's reprojection tools and Discover3D use a separate projection file (to MapInfo Pro) which you will need to copy and paste the custom projection lines into It has the identical format as the Mapinfow.prj file..
It is located at-

C:\Users\USERNAME\AppData\Roaming\Encom\Common\Projections\Encom.prj

If the projection is not appearing in MapInfo Pro, it will need to added to the default MAPINFOW.PRJ file located in -

C:\Program Files\MapInfo\Professional (64-bit)

C:\Program Files (x86)\MapInfo\Professional (32-bit)

Note that these are read only locations, so you will need to copy the file to your desktop, edit it, and then copy back to overwrite with the changes.


If it is still not listed check the format is exactly correct by copying the exact formatting -

"--- Customname ---"
"Projectionname", x, x, x,

 

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Last Updated on: 4th of October, 2017