[GRASS-user] question on i.nightlights.intercalibration

[Markus Metz]

On Tue, Aug 27, 2019 at 2:25 PM Gabriel Cotlier <gabiklm01 at gmail.com> wrote:
>
> Dear Markus,
>
> here is my log of the command, "g.region -d -u -p":
>
>
> (Tue Aug 27 09:23:26 2019)

> g.region -d -u -p

> 360 degree EW extent is exceeded by 1.99983 cells
> 360 degree EW extent is exceeded by 1.99983 cells
> projection: 3 (Latitude-Longitude)
> zone:       0
> datum:      wgs84
> ellipsoid:  wgs84
> north:      75:00:29.99892N
> south:      65:00:29.999064S
> west:       180:00:29.997408W
> east:       180:00:29.997408E
> nsres:      0:00:30
> ewres:      0:00:30
> rows:       16802
> cols:       43202
> cells:      725880004
> (Tue Aug 27 09:23:26 2019) Command finished (0 sec)


if you want to avoid this message, change our default region with

g.region -p n=75:00:15N s=65:00:15S w=179:59:45W e=180:00:15E res=00:00:30
-s

QGIS uses GDAL to fetch metadata of raster maps, therefore the output of
gdalinfo would be more informative, but you know the relevant parts
already: these raster maps need to be imported with r.in.gdal -a

Markus M

>
>
>
> On Mon, Aug 26, 2019 at 4:01 PM Markus Metz <markus.metz.giswork at gmail.com>
wrote:
>>
>>
>>
>> On Mon, Aug 26, 2019 at 1:14 AM Gabriel Cotlier <gabiklm01 at gmail.com>
wrote:
>> >
>> > Dear Markus,
>> >
>> > I uninstall and reinstall grass 7.6.1 64 bits and still my log for the
commands
>> >
>> > g.region -p
>> >
>> > and
>> >
>> > g.region -p n=75:00:15N s=65:00:15S w=179:59:45W e=180:00:15E
res=00:00:30
>> >
>> > are respectively :
>> >
>> > (Sun Aug 25 20:01:47 2019)

>> > g.region -p

>> > 360 degree EW extent is exceeded by 1.99983 cells
>> > projection: 3 (Latitude-Longitude)
>> > zone:       0
>> > datum:      wgs84
>> > ellipsoid:  wgs84
>> > north:      75:00:15N
>> > south:      65:00:15S
>> > west:       179:59:45W
>> > east:       180:00:15E
>> > nsres:      0:00:30
>> > ewres:      0:00:30
>> > rows:       16801
>> > cols:       43200
>> > cells:      725803200
>> > (Sun Aug 25 20:01:47 2019) Command finished (0 sec)

>> > (Sun Aug 25 20:02:10 2019)
>> >
>> > g.region -p n=75:00:15N s=65:00:15S w=179:59:45W e=180:00:15E
res=00:00:30
>> > 360 degree EW extent is exceeded by 1.99983 cells
>>
>> Strange, the region defined with "n=75:00:15N s=65:00:15S w=179:59:45W
e=180:00:15E res=00:00:30" should not cause a message like
>> "360 degree EW extent is exceeded by 1.99983 cells"
>>
>> Maybe the default region has strange settings. What is the output of
"g.region -d -u -p" ?
>>
>> Markus M
>>
>> > projection: 3 (Latitude-Longitude)
>> > zone:       0
>> > datum:      wgs84
>> > ellipsoid:  wgs84
>> > north:      75:00:15N
>> > south:      65:00:15S
>> > west:       179:59:45W
>> > east:       180:00:15E
>> > nsres:      0:00:30
>> > ewres:      0:00:30
>> > rows:       16801
>> > cols:       43200
>> > cells:      725803200
>> > (Sun Aug 25 20:02:10 2019) Command finished (0 sec)
>> >
>> > Are the resulting intercallibrated layers ready for further use
outside grass exported as GeoTIFF or I need to get inside grass without any
messages that 360 degree EW extent is exceeded for the layer to be OK?
>> >
>> > further more I would like to ask if maybe the max and min for
intercallibtated layer are somewhere already available to check whether the
max and min I got are correct?
>> > Thanks a lot for your help.
>> > Regards,
>> > Gabriel
>> >
>> >
>> >
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