Re: What coordinate system should I use?

What coordinate system should I use?
I want to create some software to augment the mapping process that I
now use, with a few functions that I am not happy with as they stand.
I need to decide upon a method of calculation for the coordinates I
will use in this software.
I note that GpsMapEdit uses Lat & Lon in it's coordinates as displayed
or otherwise shown to the user. I am wondering if anyone here knows if
it also uses Lat & Lon in its internal calculations, or if it performs
any projection to some cartesian system to ensure correct geometry, or
if it uses spherical trig for calculations.


Anytime you look at a map that's a projection...but the points on the
projection could be labeled as latitude and longitude.


.

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