[GRASS-user] some questions on r.tile

[Markus Neteler]

Hi Margherita,

On Thu, Aug 11, 2016 at 10:09 AM, Margherita Di Leo <diregola at gmail.com> wrote:
> Ciao Markus! Thanks for your answer,
> On Wed, Aug 10, 2016 at 8:00 PM, Markus Neteler <neteler at osgeo.org> wrote:
>> Which projection are you using?
>> I suspect latlong?
>
> yes, correct.
...
> r.tile input=bln300_mosaic output=tiled width=14400 height=9600 overlap=4 --v
> ERROR: Illegal latitude for North

I guess that the distance value must be given in degree when in
LatLong since I cannot see any geodesic support in r.tile (it does
exist e.g. in r.grow.distance). Internally it calculates with the
coordinates.

Probably r.tile is not yet suitable for LatLong?

Test case:

g.region res=1 n=90 s=-90 w=-180 e=180 -p
r.mapcalc "myarea = 1"
r.tile input=myarea output=tiled width=14400 height=9600 overlap=4
ERROR: Illegal latitude for North

Please open a ticket for this.

Markus