[GRASS-dev] wxGUI changing resolution incorrectly

GRASS GIS GRASS GIS developer
1

This is really odd.

I’ve been using GRASS 7 (compiled yesterday) trying to patch together a 90m DEM with ocean data downscaled from an ETOP2 DEM.

I repeatedly was getting files with a resulting resolution of NS Res: 0:00:50.139276 and EW Res: 0:00:53.20197 even though I repeatedly set the resolution to 3 arc sec using g.region.

I’ve discovered that this is what happens if I interpolate points, resample rasters, patch rasters, or run r.shaded.relief (a script) using GUI versions of GRASS modules.

But if I do EXACTLY the same thing from the terminal command line–even with copying the commands from the GUI–I get the proper 90m (3 arc sec) resolution.

Anyone have any idea what is happening here? This is potentially serious for analysis.

Michael

C. Michael Barton
Visiting Scientist, Integrated Science Program
National Center for Atmospheric Research &
University Corporation for Atmospheric Research
303-497-2889 (voice)

Director, Center for Social Dynamics & Complexity
Professor of Anthropology, School of Human Evolution & Social Change
Arizona State University
www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu

2

Hi, this relates to earlier messages, including from me, about problems with the region settings. It seemed to be solved, but I am again experiencing similar problems as reported below.

Like Michael, I tried different functions, like r.patch and r.proj, and they all give trouble when used with the GUI version of the module. But, as Michael reported, the same modules work fine when used on the command line.

This is indeed a serious problem, but hopefully the pointer that this is related to the GUI version of these modules might help to identify the problem.