[GRASS-user] importing Mars DEM takes too long

[Markus Neteler]

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?

Markus