Hi all - I'm brand new to GRASS (though have basic familiarity with ArcInfo). I work in a datum that apparently isn't contained in the basic GRASS library -- from what I've uncovered searching this list & the general web, I need to add my datum by going to the $GISBASE/etc/datum.table and appending this text:
The Arc 1960 datum; source: EPSG database arc60 "Arc 1960" clark80 dx=-160 dy=-6 dz=-302 However, I have *no* idea how to find this. Using both my Mac Finder as well as my very rudimentary bash skills, I navigated to the GRASS/6.4/Modules/*etc*/ folder, but see only a filed called xtnmenu.dat (which I don't know how to open). Can anyone provide some very basic instructions for how to do this? Thanks so much! ali
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