I was doing very well with rendering GRASS integer rasters until I tried to set up some CLASSes for creating a legend. Without a classification Mapserver was pulling the colors from the GRASS color table quite nicely, but as soon as I set up the CLASSes and got a suitable legend my map images were hosed with nonsense colors. I expected to be able to say EXPRESSION "1" for GRASS CAT=1. I got some semblance of the underlying data to appear by specifying PROCESSING "SCALE=AUTO", but no other tweaks of EXPRESSIONS or using [red], [green], and [blue] instead of [pixel] or adjusting PROCESSING "SCALE= . . ." to reflect vaues indicated by gdalinfo or r.info (not the same) got me any closer. Specifically I am working with the 2006 Cropland Data Layer (CDL) from USDA NASS imported to GRASS with r.in.gdal. I am running FWTools-1.3.6. For now it seems like I'll have to have two LAYERs, one for the map and one for the legend. Can anyone offer any insight on this? What would it take to get Mapserver/GDAL to read GRASS categories and labels (assuming it doesn't already and I'm simply ignorant)? We might be interested in sponsoring such work under the right circumstances -- anyone else? Thanks.
See you at FOSS4G2007. Neil Neil Best <[EMAIL PROTECTED]> Project Analyst Lanworth, Inc. (formerly Forest One, Inc.) 300 Park Blvd, Suite 425 Itasca, IL 60143 tel 630 250 7598 fax 630 672 7500 www.Lanworth.com
