[GRASS-user] importing Mars DEM takes too long

[Anna Petrášová]

On Sat, Nov 19, 2016 at 2:20 PM, Markus Neteler <neteler at osgeo.org> wrote:
> On Sat, Nov 19, 2016 at 6:17 PM, Anna Petrášová <kratochanna at gmail.com> wrote:
>> On Sat, Nov 19, 2016 at 10:55 AM, Markus Neteler <neteler at osgeo.org> wrote:
>>> On Nov 19, 2016 2:08 PM, "Anna Petrášová" <kratochanna at gmail.com> wrote:
> ...
>>> Did you set the cache? Eg
>>>
>>> export GDAL_CACHEMAX=2000
>>
>> I installed GDAL 2.1.2 and set the cachemax, but it doesn't help, it's
>> still slow. I might try the ECW then.
>
> (got the file offlist)
>
> So, the file size is 154M. My test:
>
> gdal-config --version
> 2.0.2
>
> gdalinfo ESP_035583_2060_RED.JP2 | grep driver
> Driver: JP2OpenJPEG/JPEG-2000 driver based on OpenJPEG library
>
>
> time -p grass72 -c ESP_035583_2060_RED.JP2 ~/grassdata/mars_dem --exec
> r.import input=ESP_035583_2060_RED.JP2 output=ESP_035583_2060_RED
> Cleaning up temporary files...
> Creating new GRASS GIS location/mapset...
> Executing <r.import input=ESP_035583_2060_RED.JP2
> output=ESP_035583_2060_RED> ...
> WARNING: Datum <unknown> not recognised by GRASS and no parameters found
> WARNING: Datum <unknown> not recognised by GRASS and no parameters found
> WARNING: Datum <unknown> not recognised by GRASS and no parameters found
> Proceeding with import of 1 raster bands...
> Importing raster map <ESP_035583_2060_RED>...
>
> .... it takes forever.
>
> Note:
> The difference with QGIS is here that we import while QGIS is simply
> viewing it using the image pyramids which are useless when it comes to
> import.
>
> Can you make a test with GDAL 2.1?

See above, I already tested with 2.1.2 (released in October).

>
> Markus