[mapguide-trac] #160: GDAL Provider Accesses data even if layer not visible

MapGuide Open Source trac_mapguide at osgeo.org
Wed Sep 5 02:59:16 EDT 2007


#160: GDAL Provider Accesses data even if layer not visible
-------------------------------------+--------------------------------------
 Reporter:  amorsell at spatialgis.com  |         Owner:        
     Type:  defect                   |        Status:  new   
 Priority:  high                     |     Milestone:        
Component:  Feature Service          |       Version:  1.2.0 
 Severity:  major                    |    Resolution:        
 Keywords:                           |   External_id:  939553
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Comment (by jbirch):

 This was/is because without a config file, the GDAL provider has to go the
 the source data to get its extents.

 I'm not sure that MapGuide should be making whatever call it is that
 triggers this when the layer is initially out of scale range (perhaps
 there's potential for optimisation here?) but adding the raster config
 file in 1.2 Release makes it a lot faster.

 I'd suggest that this bug be closed and, if desired, another opened to
 address how MapGuide loads information from layers before they are in
 display range.

-- 
Ticket URL: <http://trac.osgeo.org/mapguide/ticket/160#comment:3>
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