[GRASS-user] Setting default region - incorrect region set after inserting raster resolution

[Markus Metz]

On Fri, Dec 28, 2012 at 12:41 PM, RichardC <richtcooper at hotmail.com> wrote:
> Hi,
>
> I create a new LOCATION and wish to set the default region for global
> coverage, i.e
> 90, -90, 180, -180 and, in the case of the current raster file, insert
> 0.000833 (degrees) as its resolution.

What are the exact commands you used to modify the current region?

Rather use res=0:0:03 instead of res=0.000833, in this case the
DD:MM:SS format is more precise. Or use res=0.00083333333333333.

HTH,

Markus M

>
> The resulting DEFAULT_WIND file contains the following:
>
> proj:       3
> zone:       0
> north:      90N
> south:      90S
> *east:       179:59:58.3044W
> west:       179:59:58.3044E*
> cols:       432174
> rows:       216086
> e-w resol:  0:00:02.9988
> n-s resol:  0:00:02.998806
> top:        1
> bottom:     0
> cols3:      360
> rows3:      180
> depths:     1
> e-w resol3: 1:00:00.00942
> n-s resol3: 1
> t-b resol:  1
>
> The outcome is that I need to click on the Map Display to display the file
> and the coordinates at left edge of the window are 45E not 180W?
>
> If a LOCATION is created with a raster resolution of '1' the default region
> appears correct (see DEFAULT_WIND below) and I then modify raster resolution
> with g.region under the PERMANENT MAPSET.
>
> proj:       3
> zone:       0
> north:      90N
> south:      90S
> *east:       180E
> west:       180W*
> cols:       360
> rows:       180
> e-w resol:  1
> n-s resol:  1
> top:        1
> bottom:     0
> cols3:      360
> rows3:      180
> depths:     1
> e-w resol3: 1
> n-s resol3: 1
> t-b resol:  1
>
> Is there a way of entering the raster resolution of 0.000833 degrees when
> first creating the default region of a LOCATION?
>
> Cheers,
> Richard
> GRASS 6.4.2
> Linux Mint 13 (ubuntu precise)
>
>
>
> --
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