Ticket #1084 (closed defect: duplicate)

Opened 5 years ago

Last modified 5 years ago

ECW takes a long time to display

Reported by: kyngchaos Owned by: nobody
Priority: major: does not work as expected Milestone:
Component: Rasters Version: Trunk
Keywords: Cc:
Platform Version: Platform: OS X
Must Fix for Release: No Awaiting user input: no

Description

In 0.9.1 ECW display is instantaneous, no matter how large the ECW was, probably because it used the inherent overviews. In 0.10.0 ECW takes a lot longer to display.

As a example, any of the Blue Marble ECW images takes about a minute before anything is displayed, during this time there is a lot of disk read activity. I gave up waiting for the Landsat742 ECW to display. I hadn't tried until now, but it's the same with 0.9.2rc1. I wonder if Qgis is not reading the overviews now?

I don't have a large JP2 to try, but I wonder if they have the same problem, since both ECW and JP2 have inherent overviews.

OSX 10.5.2, GDAL 1.5.1.

Change History

Changed 5 years ago by ersts

  • status changed from new to closed
  • resolution set to duplicate

This effectively a duplicate of ticket #778 and this issue this was addressed in r8398.

Changed 5 years ago by kyngchaos

Ah, my brain's pattern-matching missed this as I scanned the full bug list ;) Bummer that I have to open a raster first to set this option...

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