[Qgis-user] New raster provider: opening larger tiff files takes forever

[Nathan Woodrow]

Yes to the histogram issue.  Something that should really be one a different
thread to the GUI and only when user asks for it.

- Nathan

On Fri, Mar 11, 2011 at 9:53 PM, Andreas Neumann <a.neumann at carto.net>wrote:

> yes - I can also confirm that it works like before. Thank you for fixing
> the issue.
>
> I still have problems when I click on the histogram tab, it also takes
> forever. Usually I'll kill QGIS before the histogram calculation finished,
> because I am impatient - but this problem existed already before the new
> raster provider was merged.
>
> Do other people have the same issue?
>
> Thanks,
> Andreas
>
>
> On Fri, 11 Mar 2011 08:36:28 +0000, Giovanni Manghi wrote:
>
>> Most of the problems are resolved with the revision available today.
>>
>> cheers
>>
>> -- Giovanni --
>>
>> On Thu, 2011-03-10 at 10:48 +0100, Andreas Neumann wrote:
>>
>>> Hi,
>>>
>>>  Like others, I am experiencing severe problems with the new raster
>>>  provider. The Geotiff already has pyramids. With the previous raster
>>>  provider it opened in less than a second, in the new raster provider it
>>>  takes forever (several minutes). There must be something wrong.
>>>
>>>  In the console I see:
>>>
>>>  ERROR 6: Attempt to call SetGeoTransform() on a read-only GeoTIFF file.
>>>  0...10...20...30...40...50...60...70...80...90...100 - done.
>>>
>>>  and the progress message appears several times.
>>>
>>>  To me it looks like the new raster provides does not recognize the
>>>  existing gdal pyramids and tries to create new pyramids while opening
>>>  the file?
>>>
>>>  Am I doing somehting wrong?
>>>
>>>  -
>>>
>>>  I tested on Ubuntu 10.04 64bit, current trunk.
>>>
>>>  Thanks,
>>>  Andreas
>>>
>>>
> --
> --
> Andreas Neumann
> Böschacherstrasse 10A
> 8624 Grüt (Gossau ZH)
> Switzerland
> _______________________________________________
> Qgis-user mailing list
> Qgis-user at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-user
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20110311/e8b3c674/attachment.html>