I am trying to use a few algorithms that may be useful for my work, that are part of the processing tools packaged with the latest LTR 64-bit version of QGIS in Windows 10 64 bit.. However, all of the SAGA algorithms that I have tried so far throw the same final error, regarding layers that were not correctly generated. The following image is the end of the log message I get. In red is the error I mention. It happens with all tools I have tried so far.
I checked other posts and read similar issues. Some suggestions to fix it included using different paths, and avoiding blank spaces in them.
I tried changing the path to a D:\Temp directory but no success.
Things I noticed:
- In the log, some paths appear with forward slash (/), as in Unix systems.
- Some long paths appear shortened, using the tilde (~). In particular, C:\OSGeo4W64 gets shortened to C:\OSGeo4~1
Any hints?
EDIT:
This is the output log provided in comments:
Procesando algoritmo...
Algoritmo 'Profiles from lines' comenzando…
Parámetros de entrada:
{ 'DEM' : 'F:/Dropbox/QGIS_Test/DEM.tif', 'LINES' : 'F:\\Dropbox\\QGIS_Test\\Lines.shp', 'NAME' : 'id', 'PROFILE' : 'C:/Users/Kais/AppData/Local/Temp/processing_5080f69b88474281943ae5c46597245d/8d34e08d5a984c11a8ffce8b99fadd36/PROFILE.shp', 'PROFILES' : 'C:/Users/Kais/AppData/Local/Temp/processing_5080f69b88474281943ae5c46597245d/acbe581a52b9406fb5db4af3292f919a/PROFILES.shp', 'SPLIT ' : True, 'VALUES' : '' }
io_gdal 0 -TRANSFORM 1 -RESAMPLING 3 -GRIDS "C:/Users/Kais/AppData/Local/Temp/processing_5080f69b88474281943ae5c46597245d/635ead2d3ee34f7bbeda0d5905c407b0/DEM.sgrd" -FILES "F:\Dropbox\QGIS_Test\DEM.tif"
ta_profiles "Profiles from Lines" -DEM "C:/Users/Kais/AppData/Local/Temp/processing_5080f69b88474281943ae5c46597245d/635ead2d3ee34f7bbeda0d5905c407b0/DEM.sgrd" -LINES "F:\Dropbox\QGIS_Test\Lines.shp" -NAME "id" -SPLIT true -PROFILE "C:/Users/Kais/AppData/Local/Temp/processing_5080f69b88474281943ae5c46597245d/8d34e08d5a984c11a8ffce8b99fadd36/PROFILE.shp" -PROFILES "C:/Users/Kais/AppData/Local/Temp/processing_5080f69b88474281943ae5c46597245d/acbe581a52b9406fb5db4af3292f919a/PROFILES.shp"
F:\Dropbox\QGIS_Test>set SAGA=C:/PROGRA~2/QGIS3~1.4/apps\saga-ltr
F:\Dropbox\QGIS_Test>set SAGA_MLB=C:/PROGRA~2/QGIS3~1.4/apps\saga-ltr\modules
F:\Dropbox\QGIS_Test>PATH=C:\PROGRA~2\QGIS3~1.4\apps\qgis\bin;C:\PROGRA~2\QGIS3~1.4\apps\Python37;C:\PROGRA~2\QGIS3~1.4\apps\Python37\Scripts;C:\PROGRA~2\QGIS3~1.4\apps\qt5\bin;C:\PROGRA~2\QGIS3~1.4\apps\Python27\Scripts;C:\PROGRA~2\QGIS3~1.4\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32\WBem;C:\PROGRA~2\QGIS3~1.4\apps\Python37\lib\site-packages\pywin32_system32;C:\PROGRA~2\QGIS3~1.4\apps\Python37\lib\site-packages\numpy\.libs;C:/PROGRA~2/QGIS3~1.4/apps\saga-ltr;C:/PROGRA~2/QGIS3~1.4/apps\saga-ltr\modules
F:\Dropbox\QGIS_Test>saga_cmd io_gdal 0 -TRANSFORM 1 -RESAMPLING 3 -GRIDS "C:/Users/Kais/AppData/Local/Temp/processing_5080f69b88474281943ae5c46597245d/635ead2d3ee34f7bbeda0d5905c407b0/DEM.sgrd" -FILES "F:\Dropbox\QGIS_Test\DEM.tif"
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SAGA Version: 2.3.2 (32 bit)
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library path: C:\PROGRA~2\QGIS3~1.4\apps\saga-ltr\modules\
library name: io_gdal
library : GDAL/OGR
tool : Import Raster
author : O.Conrad (c) 2007 (A.Ringeler)
processors : 8 [8]
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Parameters
Grids: No objects
Files: "F:\Dropbox\QGIS_Test\DEM.tif"
Select from Multiple Bands:
Alphanumeric Sorting: yes
Transformation: yes
Resampling: B-Spline Interpolation
loading: F:\Dropbox\QGIS_Test\DEM.tif
Driver: GTiff
Bands: 1
Rows: 5557
Columns: 7445
loading: DEM
F:\Dropbox\QGIS_Test>saga_cmd ta_profiles "Profiles from Lines" -DEM "C:/Users/Kais/AppData/Local/Temp/processing_5080f69b88474281943ae5c46597245d/635ead2d3ee34f7bbeda0d5905c407b0/DEM.sgrd" -LINES "F:\Dropbox\QGIS_Test\Lines.shp" -NAME "id" -SPLIT true -PROFILE "C:/Users/Kais/AppData/Local/Temp/processing_5080f69b88474281943ae5c46597245d/8d34e08d5a984c11a8ffce8b99fadd36/PROFILE.shp" -PROFILES "C:/Users/Kais/AppData/Local/Temp/processing_5080f69b88474281943ae5c46597245d/acbe581a52b9406fb5db4af3292f919a/PROFILES.shp"
Error: dbf write: invalid table
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SAGA Version: 2.3.2 (32 bit)
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library path: C:\PROGRA~2\QGIS3~1.4\apps\saga-ltr\modules\
library name: ta_profiles
library : Profiles
tool : Profiles from Lines
author : O.Conrad (c) 2006
processors : 8 [8]
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Load grid: C:/Users/Kais/AppData/Local/Temp/processing_5080f69b88474281943ae5c46597245d/635ead2d3ee34f7bbeda0d5905c407b0/DEM.sgrd...
Load shapes: F:\Dropbox\QGIS_Test\Lines.shp...
Parameters
Grid system: 5; 5557x 7445y; 511960x 4649730y
DEM: DEM
Values: No objects
Lines: Lines
Name: id
Profiles: Profiles
Profiles: No objects
Each Line as new Profile: yes
failed
Save shapes: C:/Users/Kais/AppData/Local/Temp/processing_5080f69b88474281943ae5c46597245d/acbe581a52b9406fb5db4af3292f919a/PROFILES.shp_1...
Save shapes: C:/Users/Kais/AppData/Local/Temp/processing_5080f69b88474281943ae5c46597245d/acbe581a52b9406fb5db4af3292f919a/PROFILES.shp_2...
F:\Dropbox\QGIS_Test>exit
Ejecución completada en 12.90 segundos
Resultados:
{'PROFILE': 'C:/Users/Kais/AppData/Local/Temp/processing_5080f69b88474281943ae5c46597245d/8d34e08d5a984c11a8ffce8b99fadd36/PROFILE.shp',
'PROFILES': 'C:/Users/Kais/AppData/Local/Temp/processing_5080f69b88474281943ae5c46597245d/acbe581a52b9406fb5db4af3292f919a/PROFILES.shp'}
Cargando las capas resultantes
Las siguientes capas no se generaron correctamente.<ul><li>C:/Users/Kais/AppData/Local/Temp/processing_5080f69b88474281943ae5c46597245d/8d34e08d5a984c11a8ffce8b99fadd36/PROFILE.shp</li></ul>Puede comprobar el «Panel de mensajes del registro» en la ventana principal de QGIS para encontrar más información sobre la ejecución del algoritmo.
Best Answer
There are some problems with the Profiles from lines algorithm in QGIS.
Let's see first how it should work.
In SAGA GIS, at the command line:
If you want to save Each Line as a New Profile, you need to use the
-SPLITand the-PROFILESoptions. Files will be saved as profile_01.shp, profile_02.shp, etc.If not, don't use
-SPLIToption and use-PROFILEoption. File will be saved as profile.shp.In QGIS processing toolbox:
Both
-PROFILEand-PROFILESoptions are always used, so one of them always returns an error (The following layers were not correctly generated.).If you tick on Each Line as a New Profile (is ticked by default),
-SPLIToption is used, and the files are saved as PROFILE.shp1, PROFILE.shp2, etc. That produced two errors (one for the-PROFILEempty layer and other for the invalid extensions).A bug report was already opened: https://issues.qgis.org/issues/21294.
Meanwhile, a possible workaround is to not use the Each Line as a New Profile option (untick it) and ignore the error generated by the
-PROFILEover option.