[Qgis-user] Slow rendering of vrt

[Etienne Tourigny]

It would be nice to have this bultin to gdalbuildvrt (as an optin of
course) - could the authors make a patch?

Regards,
Etienne

On Thu, Aug 23, 2012 at 7:34 AM, Micha Silver <micha at arava.co.il> wrote:
> On 23/08/2012 11:33, Giovanni Manghi wrote:
>>
>> http://trac.osgeo.org/gdal/wiki/CatalogueForQIS
>
>
> Magic! Many thanks, and also to Andrea Peri for posting the python code.
> In windows I had to run it as: " python computestats.py -approx
> <filename.vrt> "
>>
>> it would be very nice to have this added as tool directly in QGIS...
>>
>> cheers
>>
>>
>> -- Giovanni --
>>
>>
>> On Thu, 2012-08-23 at 11:27 +0300, Micha Silver wrote:
>>>
>>> Hello all:
>>>
>>> I have a batch of over 100 raster tiles in ecw format. Each is 50 -
>>> 100 MB in size. When I choose 20 or so files to load they appear
>>> (render) very quickly - in a matter of a few seconds or less. If I
>>> create a vrt of that same batch of tiles, it takes a long time to
>>> first render - upwards of 15 - 30 seconds.  Once the vrt is loaded
>>> response is excellent (zooming, etc). But that initial delay is a bit
>>> annoying. Anything I can do to improve it? (QGIS 1.8, Win 7 64 bit)
>>>
>>> Many thanks,
>>> Micha
>>>
>>> --
>>> Micha Silver
>>> 052-3665918
>>> _______________________________________________
>>> Qgis-user mailing list
>>> Qgis-user at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>>
>>
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>>
>>
>
>
> --
> Micha Silver
> 052-3665918
>
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