[GRASS-user] exporting raster asc to qgis, axis flipped E to W?

Tyler Smith tyler at plantarum.ca
Fri May 8 11:34:41 PDT 2015


On Fri, May 8, 2015, at 02:23 PM, Nikos Alexandris wrote:
> 
> What does `g.region -p` say about?

g.region -p rast=tri_median at PERMANENT
projection: 3 (Latitude-Longitude)
zone:       0
datum:      wgs84
ellipsoid:  wgs84
north:      46:53:04.633938N
south:      34:44:13.536462N
west:       94:51:40.938811W
east:       68:50:28.1616W
nsres:      0:00:29.993894
ewres:      0:00:30.004093
rows:       1458
cols:       3122
cells:      4551876

> 
> Shouldn't it be:
> 
> east: 94:51:40.938811W
> west: 68:50:28.1616W
> 
> ( east > west )
> 

Not in this case - note that the east boundary is 68 degrees WEST, which
is further east than the west boundary at 94 degrees WEST.

Also, my crude fix of replacing 94:51:40.93W with -94:51:40.93 in the
asc header didn't really fix the problem - the projection still doesn't
quite match up with the destination in QGis.

Thanks,

Tyler


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