[GRASS-user] g.region

[Alfredo Alessandrini]

Hi,

with GRASS 6.4.0RC5 (Debian). I try to set the region with 250x250
meters of resolution but I have this result:



------------------------------------
GRASS 6.4.0RC5 (WGS84_33n):~ > g.proj -p
-PROJ_INFO-------------------------------------------------
name       : Universe Transverse Mercator
proj       : utm
datum      : wgs84
ellps      : wgs84
zone       : 33
no_defs    : defined
-PROJ_UNITS------------------------------------------------
unit       : metre
units      : metres
meters     : 1
GRASS 6.4.0RC5 (WGS84_33n):~ > g.region nsres=250 ewres=250
GRASS 6.4.0RC5 (WGS84_33n):~ > g.region -p
projection: 1 (UTM)
zone:       33
datum:      wgs84
ellipsoid:  wgs84
north:      4697295.976235
south:      4694979.412653
west:       265478.186612
east:       268489.71927
nsres:      257.39595356
ewres:      250.96105483
rows:       9
cols:       12
cells:      108

------------------------------------

I try to set 250*250 but the result is 257.3*250.9.

And if I try to convert a raster to a vector, the vector (point or
line) is shifted from the raster.

http://i49.tinypic.com/b7x7id.jpg




Thanks,

Alfredo