[GRASS-user] Setting region to add map to location

[Rich Shepard]

On Sun, 8 Jul 2018, Markus Neteler wrote:

> r.patch does exactly that, no flags needed.

Markus,

   A related issue: when I want to reproject raster DEMs from their source
location to a common target location r.proj fails because the source's
region is outside the target's region. How this can be makes no sense as the
target's region is an entire state and the DEMs are 7.5' topographic quads.
But, that's what r.proj tells me.

   I've not found how to resolve this issue.

   Example: the target location's (OR) default region is:

g.region -l
north-west corner: long: 125:01:06.208515W lat: 46:54:29.991261N
north-east corner: long: 115:30:24.620534W lat: 46:53:20.948674N
south-east corner: long: 116:00:36.987691W lat: 40:41:04.56057N
south-west corner: long: 124:33:45.521802W lat: 40:42:06.559349N
center longitude:  120:16:28.077102W
center latitude:   43:53:09.60569N
rows:              691017
cols:              724617

g.region -p
projection: 99 (unnamed)
zone:       0
datum:      ** unknown (default: WGS84) **
ellipsoid:  grs80
north:      369907.96287773
south:      -321108.56796525
west:       2155817.84893823
east:       2880434.93778086
nsres:      0.99999932
ewres:      1.00000012
rows:       691017
cols:       724617
cells:      500722665489

and a source's smaller region (Elwood) is:

g.region -l
north-west corner: long: 122:22:30.177355W lat: 45:14:59.998015N
north-east corner: long: 122:15:00.21557W lat: 45:15:07.129823N
south-east corner: long: 122:14:59.838614W lat: 45:14:54.839228N
south-west corner: long: 122:22:29.773496W lat: 45:14:47.707842N
center longitude:  122:18:45.005157W
center latitude:   45:14:57.48019N
rows:              415
cols:              10732

g.region -p
projection: 99 (unnamed)
zone:       0
datum:      ** unknown (default: WGS84) **
ellipsoid:  grs80
north:      582841.5
south:      581596.5
west:       7719262.5
east:       7751458.5
nsres:      3
ewres:      3
rows:       415
cols:       10732
cells:      4453780

   I need to understand why r.proj fails and how I can fix these situations.

Best regards,

Rich