GRASS users:
I did an image rectification of a scanned map and everything went well. I
then wanted to check the coordinates using xgdisplay's query raster
function. To my surprise the coordinates were significantly in error in
both Northing and Easting. I decided to double check this using d.rast and
d.where and I found that the coordinates were very accurate when queried
this way.This means that my xgdisplay doesn't agree with d.where and I believe the
problem is with xgdisplay (I hope it's with xgdisplay). I should note that
I am running GRASS on an HP 720 with HPUX 9.01 which is not an officially
supported GRASS. This may only be a problem with *my* xgdisplay binary.I am interested to know if others have experienced this problem, either on
HPs or other platforms. I am using GRASS 4.1 with the 3 updates.Regards,
Doug
I'm not one to bad-mouth GRASS modules, but I've never been able to keep
xgdisplay up and running long enough to find such a bug!! I hope that sometime
in the future someone is able to take the time to make xgdisplay more robust,
because it is basically a neat little program.
My 2 cents - not necessarily my employer's.
--
Malcolm D. Williamson - Research Assistant E-mail: malcolm@cast.uark.edu
Center for Advanced Spatial Technologies Telephone: (501) 575-6159
Ozark Rm. 12 Fax: (501) 575-3846
University of Arkansas
Fayetteville, AR 72701