GRASS to ARC grid projection differences

[Alynne Bayard]

hello,

does anyone know why there would be a large difference
between the region specified for a grass raster file
and the x and y min/max when it is converted to an
arc grid?  see eg./details below:


GRASS: (utm)   	ARC:  (utm)

ncols 129
nrow 249
n 3957930	xmax 3954330
s 3950460	xmin 3950460
e 369040	ymax 372640
w 365170	ymin 365170
cellsize 30m	cell 30m


thanks...alynne.

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&  Alynne Bayard (alynne at cast.uark.edu)          &
&  Research Assistant - Tree-Ring Laboratory     &
&  Ancient Cross Timbers Project                 & 
&  Department of Geosciences, Ozark Hall #113    &
&  University of Arkansas                        &
&  Fayetteville, AR 72701                        &
&  tel:  (501) 575-4277 ; fax:  (501) 575-3177   &
&  (xtimber) http://www.uark.edu/xtimber/        &
&  {me= http://www.cast.uark.edu/~alynne}        &
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