Regarding raster maps

[Malcolm Williamson]

On Wed, 11 Sep 1996, User of Grass wrote:

> Hello,
> A very preliminary question. How can negative integers represented in a
> GRASS raster map. I have a data set on depth to the geologuc basement
> but when I import my data using v.in.ascii all negative numbers are
> automatically converted into positive values.
> 
> Thanks in advance
> 
I'll assume that you really meant "r.in.ascii", as you're talking about 
raster maps. I just imported the following ASCII file successfully as a test:

north:      4001280
south:      3971040
east:       438840
west:       412200
rows: 2
cols: 2
 
-2 -3 -4 -5


Are you sure that you are formatting your file correctly? Are you working 
with integers or floating point numbers. Although r.in.ascii is supposed 
to round off floats, I haven't tested it with negative numbers. I'd be 
interested in knowing the outcome of your attempts - feel free to contact 
me for more discussion. Regards,
--
Malcolm D. Williamson - GIS Specialist           E-mail: malcolm at cast.uark.edu
Center for Advanced Spatial Technologies      Telephone: (501) 575-6159
Ozark Rm. 12                                        Fax: (501) 575-5218 
University of Arkansas              
Fayetteville, AR 72701