Bug report #20583
Raster calculator freezes the GUI with big rasters
Status: | Closed | ||
---|---|---|---|
Priority: | Normal | ||
Assignee: | Alessandro Pasotti | ||
Category: | Raster Calculator | ||
Affected QGIS version: | 3.5(master) | Regression?: | No |
Operating System: | Easy fix?: | No | |
Pull Request or Patch supplied: | No | Resolution: | |
Crashes QGIS or corrupts data: | No | Copied to github as #: | 28403 |
Description
Raster is a dem 40000x40000 and even with a simple expression it takes ages and the GUI completely freezes (no cancellation is possible: it is disabled in code)
This makes the tool completely unusable for large rasters.
Associated revisions
Re-add the progress bar to the calculator
Fixes #20583 - Raster calculator freezes the GUI with big rasters
... even if it is frozen while reding the raster,
at least it allows to abort the process later
Re-add the progress bar to the calculator
Fixes #20583 - Raster calculator freezes the GUI with big rasters
... even if it is frozen while reding the raster,
at least it allows to abort the process later
History
#1 Updated by Giovanni Manghi about 6 years ago
- Status changed from Open to Feedback
Hi Alessandro, likely duplicate of #13336 ?
#2 Updated by Alessandro Pasotti about 6 years ago
- Assignee set to Alessandro Pasotti
Yeah, related but not the same bug.
#3 Updated by Anonymous about 6 years ago
- % Done changed from 0 to 100
- Status changed from Feedback to Closed
Applied in changeset qgis|d3d18050a07b77f81a1285d7ba09d75cfba2f62c.
#4 Updated by Giovanni Manghi about 6 years ago
Thanks Alessandro for tackling this, it was MUCH needed.
#5 Updated by Alessandro Pasotti about 6 years ago
- Status changed from Closed to Reopened
I actually fixed the "big" issue (the crash #13336) but I couldn't do much for the first part of GUI freeze: this is happening because the rasters are read as a whole and that operation is not interruptable.
But, once the raster are read and the computation starts, the progress bar now appears and the operation can be interrupted.
So, since this is a partial fix, I'm going to leave this open.
#6 Updated by Alessandro Pasotti about 6 years ago
A small step forward: https://github.com/qgis/QGIS/pull/8564
#7 Updated by Alessandro Pasotti about 6 years ago
- Status changed from Reopened to Closed
Applied in changeset qgis|273a71a785012ad9df59b7419ccf6d7efac76710.