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Orthographic projection

   

The azimuthal orthographic projection (-–JG) is one of several projections with similar syntax and behavior; the one we have chosen mimics viewing the Earth from space at an infinite distance. The syntax for this projection is

-–JG lon0/lat0/width

where ( lon0, lat0) is the center of the map (projection). As an example we will try

pscoast –-R0/360/-90/90 –-JG280/30/6i –-Bg30/g15 -–Dc -–A5000 –-G255/255/255 \
    -–S150/50/150 –-P >! map.ps



 

Paul Wessel
1999-07-01