[QGIS-trac] Re: [Quantum GIS] #2876: bring back raster legend icons

[Quantum GIS]

#2876: bring back raster legend icons
------------------------------------------------+---------------------------
   Reporter:  lutra                             |              Owner:  mhugent      
       Type:  bug                               |             Status:  new          
   Priority:  major: does not work as expected  |          Milestone:  Version 1.6.0
  Component:  Map Legend                        |            Version:  Trunk        
   Keywords:                                    |   Platform_version:               
   Platform:  All                               |           Must_fix:  Yes          
Status_info:  0                                 |  
------------------------------------------------+---------------------------

Comment(by kyngchaos):

 Here's my notes, for the record:

 It seems to only affects rasters without 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 the original issue is a small 14MiB vrt with jp2 images, zooming
 and panning are not affected.  Maybe there's something else with a vrt
 that slows down the legend generation?

-- 
Ticket URL: <http://trac.osgeo.org/qgis/ticket/2876#comment:4>
Quantum GIS <http://qgis.org>
Quantum GIS is an Open Source GIS viewer/editor supporting OGR, PostGIS, and GRASS formats