[GRASSLIST:4756] i.rectify doesn't produce an correct output

[Rado Bonk]

Hello GRASSusers,

I came into the problems using i.rectify command. My area of interest (AOI) is
200mx3000m (res=1m, projection -x,-y), however this belt is start at SE
and ends at NW corner of the region. Thus there are a lots of NULL
cells outside the AOI. To decrease the amount of NULL
cells (for using the AOI in R language) I want to rectify (rotate) the
belt into a horizontal position using lower right corner as a point of
rotation. The target location is x,y, res=1m.

i.rectify finish the job without sending an email to localhost, and:

1. there is a output raster in cell directory with zero filesize
2. output file is missing in cellhd directory
3. output file is missing in cell_misc directory
4. output file is missing in cats directory
5. output file has non zero filesize in fcell directory but r.support,
and r.mapcalc don't work on it.

Is the -x,-y at original LOCATION, or reasonable fine resolution a problem? Is there a
way in GRASS to rotatea region by an arbitrary angle (I can imagine that
using r.proj magic)

Thanks,

Rado


-- 
 Radoslav Bonk M.S.
 Comenius University, Faculty of Natural Sciences
 Department of Physical Geography and Geoecology
 Mlynska Dolina 842 15,Bratislava SLOVAKIA
 fax:00421-2-654 29 064 phone: 00421-2-602 96 250