If you're trying to make a shaded relief image from 3 arrays of X, Y and Z values, you need to make a 2-dimensional matrix that's as wide as your degrees of longitude, and as tall as your degrees of latitude. (In that case the resolution of your image would be one pixel to one degree.) The Z value would be the value of each cell. Exporting that matrix to a TIFF would give you something like a shaded relief.
Florin On Thu, Aug 14, 2008 at 8:13 AM, Kåre Edvardsen <[EMAIL PROTECTED]> wrote: > Hi helpers, > > If I want to 'plshade' some intensity data held in $z at given coordintes > held in $lon and $lat, sholud the data be ordered with increasing $lon or > $lat for instance? > > All the best, > Kare > > > _______________________________________________ > Perldl mailing list > [email protected] > http://mailman.jach.hawaii.edu/mailman/listinfo/perldl > > _______________________________________________ Perldl mailing list [email protected] http://mailman.jach.hawaii.edu/mailman/listinfo/perldl
