[Qgis-user] Serious bug returns to Qgis revision 13878

[John C. Tull]

It appears that there was some corruption in my qgis preferences file. Deleting those seems to have fixed this problem.

On Jul 8, 2010, at 9:57 AM, John C. Tull wrote:

> An unfortunate side-effect of the most recent change is seg-faulting on existing qgis projects. Any thoughts on how to get around this? I would gladly hand-edit my xml project file if necessary.
> 
> Cheers,
> John
> 
> On Jul 8, 2010, at 4:12 AM, Marco Hugentobler wrote:
> 
>> Hi William
>> 
>> It is disabled now (r13899).
>> Let me know if you find out more (or some conditions when the icon can be 
>> savely enabled).
>> 
>> Regards,
>> Marco
>> 
>> Am Dienstag, 6. Juli 2010, um 17.17:55 schrieb William Kyngesburye:
>>> For release, maybe disble it, and work on a solution for 1.6?
>>> 
>>> A note about the raster format - I wonder if it only affects rasters
>>> without overviews.  For the vrts in Greg's test, though the files
>>> referenced in the vrts are JP2s, does a vrt inherit the overviews?  I did
>>> a test with a single 1 GiB JP2 and it generates the legend icon nearly
>>> instantaneously.  A 1.3 GiB tiff without overviews takes a long time, yet
>>> the same with overviews is fast.  A 200MiB tiff without overviews has a
>>> noticable delay, but it's not horrible.
>>> 
>>> Though, Greg's test vrts are quite small, just 14MiB across 4 vrts.  Maybe
>>> there's something else with a vrt that slows down the legend generation? 
>>> Zooming and panning are not affected.
>>> 
>>> On Jul 6, 2010, at 4:21 AM, Marco Hugentobler wrote:
>>>>> (a raster scaled down to 16x16 pixels usually
>>>>> doesn't provide a good overview)
>>>> 
>>>> I made a little self-test here and it was quite easy to distinguish
>>>> different topographic map sheets by their legend icons (even if they
>>>> have exactly the same color schema).
>>>> 
>>>> Regards,
>>>> Marco
>>>> 
>>>> Am Dienstag, 6. Juli 2010, um 10.26:10 schrieb Martin Dobias:
>>>>> Hi
>>>>> 
>>>>> On Tue, Jul 6, 2010 at 8:35 AM, Marco Hugentobler
>>>>> 
>>>>> <marco.hugentobler at sourcepole.ch> wrote:
>>>>>> Hi William
>>>>>> 
>>>>>> Ah, good to know it is the icon generation that makes loading projects
>>>>>> with many raster layers slow.
>>>>>> 
>>>>>> Making a user option to disable layer icons sounds good. However, this
>>>>>> would involve a string change (option dialog). String freeze for 1.5 is
>>>>>> already over for a while now. So (unless there is a better solution for
>>>>>> the problem without string change) something for 1.6...
>>>>> 
>>>>> in my opinion, we could actually remove this feature. I don't find it
>>>>> particularly useful (a raster scaled down to 16x16 pixels usually
>>>>> doesn't provide a good overview), it adds additional overhead when the
>>>>> raster layer is loaded and further complicates the complex raster
>>>>> code. Another argument could be that vector layer also don't have an
>>>>> icon containing the preview.
>>>>> 
>>>>> I'm just afraid of creating too many configurable options that barely
>>>>> anyone will understand their purpose.
>>>>> 
>>>>> Regards
>>>>> Martin
>>> 
>>> -----
>>> William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
>>> http://www.kyngchaos.com/
>>> 
>>> "I ache, therefore I am.  Or in my case - I am, therefore I ache."
>>> 
>>> - Marvin
>> 
>> 
>> -- 
>> Dr. Marco Hugentobler
>> Sourcepole -  Linux & Open Source Solutions
>> Webereistrasse 66, 8134 Adliswil, Switzerland
>> marco.hugentobler at sourcepole.ch http://www.sourcepole.ch
>> Technical Advisor QGIS Project Steering Committee
>> _______________________________________________
>> Qgis-user mailing list
>> Qgis-user at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>