[GRASS-user] FW: Temporal + export

[Veronica Andreo]

Hola Mati!!!!!

I'm so glad you are using grass and writing to the list! :)

Markus won me, but I had the same pieces of advice.

First idea/advice: do not use folder names (nor file names) with spaces,
second: maybe you wanna update to 7.0.4, the new stable release.

I've tried here (grass71, fedora23 box) with:

t.rast.export input=cla at clorofila output=cla.gzip compression=gzip
directory=/home/veroandreo where="start_time >= '2013-01-01'"

Checking GDAL data type and nodata value...
 100%
Using GDAL data type <Float32>
Input raster map contains cells with NULL-value (no-data). The value -nan
will be used to represent no-data values in the input map. You can specify
a nodata value with the nodata option.
Exporting raster data to GTiff format...
 100%
r.out.gdal complete. File <A20130012013008.L3m_8D_CHL_chlor_a_4km_arg.tif>
created.
...
tar xvf cla.gzip

all is there and looks fine...

The nodata option comes from r.out.gdal [1]. t.rast.export uses it to
export maps in the strds. Don't know about gdalwarp, but in any case, if
you will then import data into R for other analyses, you can change the
value there.

Un abrazo,
Vero

[1] https://grass.osgeo.org/grass70/manuals/r.out.gdal.html



2016-05-05 12:41 GMT-03:00 Matías Alejandro Castillo Moine <
matialecastillo at hotmail.com>:

> Hi everyone!
>
> I never used a list... I think I made a mistake when sent the message
> yesterday...
>
> I was construct a strds in grass 7.0.3, and I want to export it for use in
> R to do some statistics not included with tgrass.. But when I do the export
> operation, I receive this message:
>
> Usising the GUI:
> t.rast.export --overwrite --verbose input=LST2 at MOD11A2 output=C:\SIG\Base
> de datos area de estudio\Datasets_R\LSR_R compression=gzip
> Traceback (most recent call last):
>   File "C:\OSGEO4~1\apps\grass\grass-7.0.3/scripts/t.rast.ex
> port.py", line 87, in <module>
>     main()
>   File "C:\OSGEO4~1\apps\grass\grass-7.0.3/scripts/t.rast.ex
> port.py", line 82, in main
>     _input, output, compression, directory, where, _format,
> "strds")
>   File "C:\OSGEO4~1\apps\grass\grass-7.0.3\etc\python\grass\
> temporal\stds_export.py", line 268, in export_stds
>     new_cwd = tempfile.mkdtemp(dir=directory)
>   File "C:\OSGEO4~1\apps\Python27\lib\tempfile.py", line
> 329, in mkdtemp
>     _os.mkdir(file, 0700)
> WindowsError: [Error 3] El sistema no puede encontrar la
> ruta especificada: '/tmp\\tmppi2oh1'
> (Wed May 04 16:09:44 2016) Comando finalizado. (1 segundos)
>
>
>
> In python (very difficult):
>
> input="LST2 at MOD11A2"
> output="LST_R.tar.gz"
> compression="gzip"
> directory="C:/SIG/Base de datos area de estudio/Datasets_R/"
> where=None
> format_="GTiff"
> type_="strds"
> tgis.export_stds(input, output, compression, directory, where, format_,
> type_)
> >>>Traceback (most recent call last):
>   File "<input>", line 1, in <module>
>   File
> "C:\OSGEO4~1\apps\grass\grass-7.0.3\etc\python\grass\temporal\stds_export.py",
> line 298, in export_stds
>     rows, tar, list_file, new_cwd, fs, format_)
>   File
> "C:\OSGEO4~1\apps\grass\grass-7.0.3\etc\python\grass\temporal\stds_export.py",
> line 74, in _export_raster_maps_as_gdal
>     nodata = max_val + 1
> TypeError: unsupported operand type(s) for +: 'NoneType' and 'int'
>
>
> Some idea? I was try to set the nodata values to 0 using gdalwarp but this
> doesn't work apparently...
>
> Thanks you!!
>
> Matías
>
> _______________________________________________
> grass-user mailing list
> grass-user at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/grass-user
>
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