Gdal doesn't do well with ultra-large rasters in my experience.
Locally we split our rasters up into tiles, process tiles in parallel with Gnu
Parallel, then use gdal_merge or gdalwarp to join them back together (usually
gdal_merge is faster).
This usually brings our processing times on high re
Le mardi 28 avril 2015 08:25:57, jramm a écrit :
> By tiled do you mean split into N seperate TIFF files (in which case the
> answer is no), or can a single TIFF contain a tiling scheme?
Yes a TIFF can be tiled internally.
> If so, is this
> some option I need to pass to the driver when creating
David, there should be no compression, but I will try setting it explicitly
in the driver...
--
View this message in context:
http://osgeo-org.1560.x6.nabble.com/GDAL-slow-to-write-GeoTIFF-tp5203128p5203203.html
Sent from the GDAL - Dev mailing list archive at Nabble.com.
__
By tiled do you mean split into N seperate TIFF files (in which case the
answer is no), or can a single TIFF contain a tiling scheme? If so, is this
some option I need to pass to the driver when creating the output?
--
View this message in context:
http://osgeo-org.1560.x6.nabble.com/GDAL-slow-
Le 27/04/2015 16:55, jramm a écrit :
I'm writing a custom processing program using GDAL in C.
Have you tried gdal_translate on the same raster ?
Jean-Claude
___
gdal-dev mailing list
gdal-dev@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/g
On 4/27/2015 9:11 AM, Even Rouault wrote:
> Le lundi 27 avril 2015 16:55:24, jramm a écrit :
>> > I'm writing a custom processing program using GDAL in C.
>> >
>> > I'm processing a raster of roughly 150 000 * 200 000 pixels in windows of
>> > 256 * 256 pixels.
> Is the TIFF tiled ? If it is not,
Le lundi 27 avril 2015 16:55:24, jramm a écrit :
> I'm writing a custom processing program using GDAL in C.
>
> I'm processing a raster of roughly 150 000 * 200 000 pixels in windows of
> 256 * 256 pixels.
Is the TIFF tiled ? If it is not, this should help. And/or you could perhaps
try increasin
I'm writing a custom processing program using GDAL in C.
I'm processing a raster of roughly 150 000 * 200 000 pixels in windows of
256 * 256 pixels.
I'm finding that traversing the raster and applying some basic processing to
each of the windows takes very little time; about 10 minutes on my mac
