#1084 closed defect (duplicate)
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: | ||
| Must Fix for Release: | No | Platform: | OS X |
| Platform Version: | 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 (2)
comment:1 by , 16 years ago
| Resolution: | → duplicate |
|---|---|
| Status: | new → closed |
comment:2 by , 16 years ago
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...
This effectively a duplicate of ticket #778 and this issue this was addressed in r8398.