Am 10.06.2013 08:37, schrieb adi_khan:
Hi all, I am a novice to geospatialrelated terminology...and going through some literature to understand better.. Could someone please tell difference btwn geographic and projected coordinate system... I mean, I am not able to imagine how I can see an (satellite) image on screen ( flat surface) and say it is in geographic cordinate system (GCS)... as GCS means lat/long and I see it on a flat screen, so should it not be projected if I am seeing it on a flat screen? And if it is projected, then how can it be in GCS ?
What you see on the screen, is in fact projected, but with a simple one degree = one unit on the screen projection. The extent of that map is still +/- 180°/90°
This "projection" has none of the benefits usual projection have, like true areas, true angles or true lenghts.
HTH, André Joost _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
