Hi.. Is the kxky setting a function of the grdarea and proj settings? If so - what is that relationship? If not, how did we arrive at a setting of "4376 x 3000" for a grdarea setting of 23;120;47.2634;-63.5664 with a proj lcc/40;-100;40? I used the help documentation and searched gembud for a similar question/answer but didn't find it. Experimentation reveals a tweak of kx will provide a scrambled image - so it doesn't seem to be an arbitrary setting. Pete
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