On 19/03/12 20:42, Michiel Kunzel wrote:
Hello list,
I am trying to create a series of ratio images using grass 6.4.1 and I
can't get the syntax for the raster calculator figured out.
What I've got at the moment is:
'Bar45rastfl = 1.0 * BarB40@PERMANENT / BarB50@PERMANENT'
I've tried varying the equation above but to no avail. The resulting
maps do not contain any values.
What am I doing wrong?
Have you set your region correctly ?
I.e. g.region rast=BarB40
before running r.mapcalc ?
Moritz
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