[Qgis-user] Large raster datasets in 2.0

[Jonathan Moules]

Hi All,
Thanks for the replies. If the final 2.0 includes ECW and JP2, that'll be
fine. We'll get our data in those two formats anyway so it'll be easiest by
far. No need for an intermediate workaround, this project isn't until
October, I was just asking early. :-)

Thanks again,
Jonathan





On 20 August 2013 12:47, Nathan Woodrow <madmanwoo at gmail.com> wrote:

> Jonathan,
>
> The final builds for 2.0 will ship with ECW and JP2 support.
>
> For a work around until 2.0 ships you can use this guide
> http://www.faunalia.com/content/adding-ecw-support-quantum-gis
>
> Just a side note: We ARE able to ship the the ECW libs with our builds
> unlike what blog post says or anyone says otherwise.  This has all been
> cleared with the ECW product manager from Intergraph.
>
> - Nathan
>
>
> On Tue, Aug 20, 2013 at 9:10 PM, Jonathan Moules <
> jonathanmoules at warwickshire.gov.uk> wrote:
>
>> Hi list,
>>   We have some large raster datasets that are mosaiced into a single
>> product. QGIS 1.7 (and I think 1.8) could access these in JP2 or ECW, but
>> 2.0 doesn't seem to be able to (or maybe that's a limitation of the
>> weeklies and the final thing will be compiled with it?).
>>
>> Due to the size of the rasters combined with a bug in GDAL that causes it
>> to take literally a month to process the overviews for super-large rasters
>> (about 450,000 * 440,000), we can't create them as a GeoTIFF.
>>
>> So the question - how do I use super-large rasters as a single contiguous
>> dataset in QGIS 2?
>>
>> Thanks,
>> Jonathan
>>
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