Tom, did you try the "differences" color map from r.colors [1]? It is defined as
0% blue 0 white 100% red It was added by Helena for such scopes. Markus [1] lib/gis/colors/differences Thomas Adams wrote: > > List: > > I'm wondering if someone has a color map that has white in the middle > range and blue at one extreme and red at the other. I'm creating a > precipitation difference map for data quality control purposes and I'm > trying to identify areas of over- and under-estimation by radar > estimates relative to gauge-only estimates. Such a scale would be > helpful to those looking for differences. > > Thanks, > Tom > > -- > Thomas E Adams > National Weather Service > Ohio River Forecast Center > 1901 South State Route 134 > Wilmington, OH 45177 > > EMAIL: [EMAIL PROTECTED] > > VOICE: 937-383-0528 > FAX: 937-383-0033 > -- View this message in context: http://www.nabble.com/Need-for-a-custom-color-map-tf4655431.html#a13302628 Sent from the Grass - Users mailing list archive at Nabble.com. _______________________________________________ grassuser mailing list grassuser@grass.itc.it http://grass.itc.it/mailman/listinfo/grassuser