Bug report #15749
Processing: gdal merge converts no data in 0
| Status: | Closed | ||
|---|---|---|---|
| Priority: | Normal | ||
| Assignee: |  Giovanni Manghi | ||
| Category: | Processing/GDAL | ||
| Affected QGIS version: | 2.18.0 | Regression?: | No |
| Operating System: | Easy fix?: | No | |
| Pull Request or Patch supplied: | No | Resolution: | fixed/implemented |
| Crashes QGIS or corrupts data: | No | Copied to github as #: | 23671 |
Description
gdal merge, as it is used in Processing, converts no data in 0
gdal_merge.py -ot Float32 -o -of GTiff OUTPUT1.tif OUTPUT2.tif
See sample input and output files: http://www.faunalia.eu/~paolo/merge_null.zip
Previously this did not happen, on the same files.
Related issues
History
#1
Updated by Giovanni Manghi about 8 years ago
- Assignee changed from Victor Olaya to Giovanni Manghi
#2
Updated by Alexander Bruy about 8 years ago
Looks like there are changes in gdal_merge behaviour. Works fine with GDAL 1.10.1
#3
Updated by Paolo Cavallini about 8 years ago
I had a look to GDAL manpage, and could not spot the change. GDAL 2.1.1+dfsg-5 here.
#4
Updated by Giovanni Manghi almost 8 years ago
- Target version set to Version 3.0
- Status changed from Open to In Progress
gdalwarp manual states "The gdalwarp utility is an image mosaicing, reprojection and warping utility",
and in fact it works (to create mosaics) and is much more efficient than gdal_merge.py, not to speak richer of options, one of them the one to pick the nodata from inputs.
We will replace the gdal raster merging tool with gdalwarp then.
#5
Updated by Giovanni Manghi over 7 years ago
- Regression? set to No
- Easy fix? set to No
#6
Updated by Giovanni Manghi over 7 years ago
- Description updated (diff)
2.18 fixed here
https://github.com/qgis/QGIS/pull/4918
needs forwardport to master, will do when GDAL is restored in master so I will be able to test.
#7
Updated by Giovanni Manghi about 7 years ago
Giovanni Manghi wrote:
2.18 fixed here
https://github.com/qgis/QGIS/pull/4918
needs forwardport to master, will do when GDAL is restored in master so I will be able to test.
now blocked by #17298
#8
Updated by Jürgen Fischer about 7 years ago
- Related to Bug report #17298: Processing: gdal merge python error on QGIS 3 added
#9
Updated by Paolo Cavallini over 6 years ago
- Resolution set to fixed/implemented
- Status changed from In Progress to Closed
Should be done now.