Percent Difference

[Rick Thompson]

Hi Robert,
  Knowing your data values, you can multiply each layer by a set # before the 
division in order to get the level of detail you want. Rick

On Fri, 12 Apr 1996, Robert Tetrault wrote:

> How can I use mapcalc to get a percent difference between two raster maps?  I
 can get r.mapcalc to "not be confused" but the resulting raster map is just 1'
s and 0's.  Am I lost in non-floating point land?  Is there a way around this?
------------------------------------------------------------------------
Rick Thompson-   Research Specialist          E-mail: rick at cast.uark.edu
Center for Advanced Spatial Technologies      Telephone: (501) 575-6159
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University of Arkansas              
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