I think geoTiffs do not handle categorical variables (can anyone
confirm?), neither the writeRAST6() function from spgrass6 (tested
yesterday), and that's why I looked for a full GRASS option (avoiding
using R to go from ArcGIS to GRASS). So it is true that I can import
categorical ArcGIS binary rasters into R, but then I'm stuck into R and
cannot move to GRASS...
Manuel
On 02/13/2014 11:58 AM, Nuno Sá wrote:
Out of the box:
Import it in R and save it as a Tiff - use GRASS to open this tiff.
Maybe it works ;P
On 13 February 2014 10:50, Benjamin Ducke <bendu...@fastmail.fm
<mailto:bendu...@fastmail.fm>> wrote:
Ouch. I am beginning to suspect that the ESRI "field"
concept for raster layers does not translate well
to GRASS/GDAL. Sorry for not being able to help.
Maybe someone else on this list has experience with
this type of data structure?
At least now we know that r.in.gdal starts counting
bands with "1"!
Ben
On 13/02/14 11:14, manuel.martin wrote:
> I had already tried this (with "2") ;-). No luck either. Reading
your
> email I tried with "0" (maybe would gdal detect only two bands over
> three). It comes out that only "band=1" works....
>
>
> GRASS 7.0.svn (lambert93):~ > r.in.gdal --o
>
input=/home/manuel/Desktop/sftp/Projets/Projets/Zones-humides/base_sig/dsm_data/clc/clc06_250m
> band=0 output=testclc
> WARNING: Raster map <testclc> already exists and will be overwritten
> WARNING: Datum <Not_specified_based_on_GRS_1980_ellipsoid> not
recognised
> by GRASS and no parameters found
> Projection of input dataset and current location appear to match
> ERROR 5:
>
/home/manuel/Desktop/sftp/Projets/Projets/Zones-humides/base_sig/dsm_data/clc/clc06_250m:
> GDALDataset::GetRasterBand(0) - Illegal band #
>
> ERROR: Selected band (0) does not exist
>
>
>
>
> On 02/13/2014 10:59 AM, Benjamin Ducke wrote:
>> Hmm, the manual page does not say so explicitely,
>> but maybe band numbering starts with "0"?
>> In that case your band 3 would have index number "2".
>>
>> Ben
>>
>> On 13/02/14 10:48, manuel.martin wrote:
>>> Hi Ben,
>>> Thanks for the reply. I tried with the band option but it
looks like
>>> gdal does not detect the multiple fields as multiple bands :
>>>
>>> GRASS 7.0.svn (lambert93):~ > r.in.gdal --o \
>>>
input=/home/manuel/Desktop/sftp/Projets/Projets/Zones-humides/base_sig/dsm_data/clc/clc06_250m
>>>
>>> \
>>>> band=3 output=testclc
>>> WARNING: Raster map <testclc> already exists and will be
overwritten
>>> WARNING: Datum <Not_specified_based_on_GRS_1980_ellipsoid> not
>>> recognised
>>> by GRASS and no parameters found
>>> Projection of input dataset and current location appear to match
>>> ERROR 5:
>>>
/home/manuel/Desktop/sftp/Projets/Projets/Zones-humides/base_sig/dsm_data/clc/clc06_250m:
>>>
>>> GDALDataset::GetRasterBand(3) - Illegal band #
>>>
>>> ERROR: Selected band (3) does not exist
>>>
>>>
>>> Cheers, Manuel
>>>
>>> On 02/12/2014 08:25 PM, Benjamin Ducke wrote:
>>>> Hi Manuel,
>>>>
>>>> GRASS does not support multi-band rasters, so you'll have
>>>> to import each band as a separate raster map.
>>>>
>>>> r.in.gdal has the "band=" option to specify a band number
>>>> to import.
>>>>
>>>> Best,
>>>>
>>>> Ben
>>>>
>>>> On 12/02/14 17:05, manuel.martin wrote:
>>>>> Hi all,
>>>>>
>>>>> I tried to import an ArcGIS binary raster (corine land cover
for the
>>>>> French territory) with three fields on each pixels (VALUE,
COUNT and
>>>>> CODE_06) using the *r.in.gdal* command. The import works
just fine,
>>>>> except that in the resulting raster, in GRASS, I only get
one field,
>>>>> which seems to be the VALUE field (and not the CODE_06
field, which
>>>>> I am
>>>>> interested in, and which is a categorical field, although
coded with
>>>>> integers).
>>>>>
>>>>> Is there a way to produce a resulting raster with all the
fields of
>>>>> the
>>>>> initial ArcGIS layer, or alternatively to choose one unique
field?
>>>>> Also,
>>>>> is there a limitation on categorical fields. For instance,
what if
>>>>> instead of integer corine land cover codes I have literal
labels, i.e.
>>>>> levels of my categorical field coded with strings?
>>>>>
>>>>> Cheers, Manuel
>>>>>
>>>>> --
>>>>>
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>>>>>
>>>>>
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>>>>>
>>>>
>>>
>>
>>
>
>
--
Dr. Benjamin Ducke, M.A.
{*} Geospatial Consultant
{*} GIS Developer
bendu...@fastmail.fm <mailto:bendu...@fastmail.fm>
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