[QGIS-trac] Re: [Quantum GIS] #3753: "Zoom to best scale" takes a long time (inf?) for TMS layers.

[Quantum GIS]

#3753: "Zoom to best scale" takes a long time (inf?) for TMS layers.
---------------------------------------------------------+------------------
   Reporter:  borysiasty                                 |              Owner:  rblazek      
       Type:  bug                                        |             Status:  new          
   Priority:  critical: causes crash or data corruption  |          Milestone:  Version 1.7.0
  Component:  Rasters                                    |            Version:  Trunk        
   Keywords:  raster provider, TMS, zoom to best scale   |   Platform_version:               
   Platform:  Debian                                     |           Must_fix:  No           
Status_info:  0                                          |  
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Comment(by rblazek):

 I tried with both current trunk and pre raster providers branch merge
 r15391 and both work the same way, it takes some time and then gives GDAL
 error
 {{{
 ERROR 1: GDALWMS: Unable to download block 262143, 262143.
   URL: http://tile.openstreetmap.org/19/262143/262143.png
   HTTP status code: 404, error: (null).
 ERROR 1: IReadBlock failed at X offset 262143, Y offset 262143
 ERROR 1: GetBlockRef failed at X block offset 262143, Y block offset
 262143
 Warning: RasterIO error: GetBlockRef failed at X block offset 262143, Y
 block offset 262143
 }}}

 and zooms to very high resolution.

 What do you mean by "synchronize the zoom with available tile levels"?
 Aren't you mixing with Openlayers?

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Ticket URL: <http://trac.osgeo.org/qgis/ticket/3753#comment:1>
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