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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

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