GRASS to ARC grid projection differences

[Malcolm Williamson]

Alynne,
It appears your x and y have been transposed - y max is equivalent to
north, y min is equivalent to south, etc. You'll find that the
difference between y max and y min is equal to 249 * 30, as is should
be, but the starting coordinate is wrong (it's the west coordinate!).

Best regards,
	-Malcolm Williamson

Alynne Bayard wrote:
> 
> 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.
> 
> &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
> &  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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