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Hi Grasshoppers,

	I have a question about r.slope.aspect.  Let me first explain the 
background to the project.  We have scanned in two 7.5 minute USGS contour
separates (with 20 ft contour intervals), cleaned them (using LT4X), and 
interpolated the DEM with a cell size of 5 meters.  My question is this..

	In the GRASS version 4.1 user reference manual, it mentions that 
Helena Mitasova of USACERL observed that most cells with very small slope end
up having bias towards categories 0,45,...,360.  So in response, the new option
min_slp=value was added.  Does anyone have any ideas as far as what that value
should be ?  Is it a factor of the computation or would this value be different
for each study area ?  

	Thanks for any help in this matter... if there is a large response, I
can post a summary..

	Don Catanzaro
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							|
Don Catanzaro						|Phone: (501)-575-6159
Arkansas Cooperative Fish & Wildlife Research Unit	|Fax:   (501)-575-3846
University of Arkansas                                  |e-mail:  
Fayetteville, Arkansas  72701                           |    dgc@CAST.uark.edu

	"Part of working for a living is working for a world to live in"
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