Bug report #20947
Merging DEM
| Status: | Closed | ||
|---|---|---|---|
| Priority: | Normal | ||
| Assignee: | - | ||
| Category: | Actions | ||
| Affected QGIS version: | 3.4.3 | Regression?: | No |
| Operating System: | WIndows 10 | Easy fix?: | No |
| Pull Request or Patch supplied: | No | Resolution: | duplicate |
| Crashes QGIS or corrupts data: | No | Copied to github as #: | 28766 |
Description
Hi. Since upgrading to the latest version of Qgis I can no longed merge DEM raster layers. I get the following log information. I note it mentions an error "ImportError: No module named _gdal_array" however I have no idea what this is. Thanks for any help.
Processing algorithm…
Algorithm 'Merge' starting…
Input parameters:
{ 'DATA_TYPE' : 5, 'INPUT' : ['D:/DEM/HawkesburySOUTH0511/DEM/1m/HawkesburySOUTH2011_3106274_56_0002_0002_1m.asc','D:/DEM/HawkesburySOUTH0511/DEM/1m/HawkesburySOUTH2011_3106276_56_0002_0002_1m.asc'], 'NODATA_INPUT' : None, 'NODATA_OUTPUT' : None, 'OPTIONS' : '', 'OUTPUT' : 'C:/Users/User/AppData/Local/Temp/processing_8c2dfe45ca564f77b6f604694185fc32/359e589f2e084114b3b94422f2c9df25/OUTPUT.tif', 'PCT' : False, 'SEPARATE' : False }
GDAL command:
cmd.exe /C gdal_merge.bat -ot Float32 -of GTiff -o C:/Users/User/AppData/Local/Temp/processing_8c2dfe45ca564f77b6f604694185fc32/359e589f2e084114b3b94422f2c9df25/OUTPUT.tif --optfile C:/Users/User/AppData/Local/Temp/processing_8c2dfe45ca564f77b6f604694185fc32\mergeInputFiles.txt
GDAL command output:
0RuntimeError: module compiled against API version 0xc but this version of numpy is 0xa
Traceback (most recent call last):
File "C:\PROGRA~1\QGIS3~1.4\bin\gdal_merge.py", line 611, in <module>
sys.exit(main())
File "C:\PROGRA~1\QGIS3~1.4\bin\gdal_merge.py", line 596, in main
fi.copy_into(t_fh, band, band, nodata)
File "C:\PROGRA~1\QGIS3~1.4\bin\gdal_merge.py", line 343, in copy_into
nodata_arg)
File "C:\PROGRA~1\QGIS3~1.4\bin\gdal_merge.py", line 124, in raster_copy
m_band)
File "C:\PROGRA~1\QGIS3~1.4\bin\gdal_merge.py", line 180, in raster_copy_with_mask
t_xsize, t_ysize)
File "C:\PROGRA~1\QGIS3~1.4\apps\Python27\lib\site-packages\osgeo\gdal.py", line 2635, in ReadAsArray
from osgeo import gdalnumeric
File "C:\PROGRA~1\QGIS3~1.4\apps\Python27\lib\site-packages\osgeo\gdalnumeric.py", line 2, in <module>
from osgeo.gdal_array import *
File "C:\PROGRA~1\QGIS3~1.4\apps\Python27\lib\site-packages\osgeo\gdal_array.py", line 17, in <module>
_gdal_array = swig_import_helper()
File "C:\PROGRA~1\QGIS3~1.4\apps\Python27\lib\site-packages\osgeo\gdal_array.py", line 16, in swig_import_helper
return importlib.import_module('_gdal_array')
File "C:\PROGRA~1\QGIS3~1.4\apps\Python27\lib\importlib\__init__.py", line 37, in import_module
import(name)
ImportError: No module named _gdal_array
Execution completed in 1.10 seconds
Results:
{'OUTPUT': <QgsProcessingOutputLayerDefinition {'sink':C:/Users/User/AppData/Local/Temp/processing_8c2dfe45ca564f77b6f604694185fc32/359e589f2e084114b3b94422f2c9df25/OUTPUT.tif, 'createOptions': {'fileEncoding': 'System'}}>}
Loading resulting layers
Related issues
History
#1
Updated by Giovanni Manghi over 5 years ago
- Status changed from Open to Feedback
Does the gdal_merge command work from the command line (use the osgeo4w shell)?
#2
Updated by Matthew Willis over 5 years ago
Sorry, I have no idea. Im strictly a click and see what happens user. My eyes glaze over and it gets too hard if it doesnt work the way it has before.
#3
Updated by Giovanni Manghi over 5 years ago
Matthew Willis wrote:
Sorry, I have no idea. Im strictly a click and see what happens user. My eyes glaze over and it gets too hard if it doesnt work the way it has before.
for the GDAL tools QGIS is "just" a GUI, we (you) must check first is this command line tools are functional outside the context of QGIS, so just open the OSgeo4W shell and try the command: https://www.gdal.org/gdal_merge.html
#4
Updated by Matthew Willis over 5 years ago
Again i find myself apologizing for my lack of knowledge. I use qgis to do some pretty basic mapping and it works well for what i need. I know only what i need to know to do what i need to do. Whats a OSgeo4w shell and what do I do with it. Sorry very basic user here.
#5
Updated by Jürgen Fischer over 5 years ago
- Status changed from Feedback to Closed
- Resolution set to duplicate
#6
Updated by Jürgen Fischer over 5 years ago
- Duplicates Bug report #20895: Raster Merge Failure added