comp.lang.idl-pvwave archive - RDF feed
type: channel
description: Messages from Usenet group comp.lang.idl-pvwave, compiled by Paulo Penteado
items: 24-bit color Postscript

24-bit color Postscript
type: item
description: I have an IDL application that creates 24-bit X displays consisting of a grayscale image with points plotted on top in color using PLOTS. (Yes, it really is preferable to do this using 24-bit color.) Color works fine on the screen, but everything comes out grayscale in Postscript. This is direct graphics, BTW. I have read the Reference manual section on color Postscript, but it is less than clear. It only addresses color images, not 24-bit color created with things like PLOTS. My copy of David Fanning's book is at work, so I have not been able to check it (will do so in the morning). Any suggestions? The good news is: Some years back I hacked a copy of MAP_IMAGE (and INTERPOLATE, I think, I don't have the code at hand) so that it would handle missing data. I hadn't used my version in a while, and I recently discovered that it will not run under IDL 5. RSI has, however, improved MAP_IMAGE so that it handles missing data; and it seems to do the job nicely. Anyone else who has done similar damage to MAP_IMAGE may want to take a look at the improved version. Ken Bowman -- Kenneth P. Bowman, Assoc. Prof. 409-862-4060 Department of Meteorology 409-862-4132 fax Texas A&M University bowmanATcsrp.tamu.edu College Station, TX 77843-3150
creator: bowman
date: 1998-09-06T07:00:00-00:00