Bug report #18110
Unable to create a tempory raster when calling IDW SAGA from python ('NoneType' object has no attribute 'source')
| Status: | Closed | ||
|---|---|---|---|
| Priority: | High | ||
| Assignee: |  Victor Olaya | ||
| Category: | Processing/SAGA | ||
| Affected QGIS version: | 3.0.0 | Regression?: | Yes |
| Operating System: | Win 10 | Easy fix?: | No |
| Pull Request or Patch supplied: | No | Resolution: | |
| Crashes QGIS or corrupts data: | No | Copied to github as #: | 26006 |
Description
Following question #17714 which has been closed.
I am able to call SAGA IDW from the processing interface (after changing order in extent : YMIN have to be changed from third position to second). see screencopy "OK Running SAGA IDW"
My problem : I cannot call this alg asking for a temporary raster file (passing None under 2.14 is not valid under 3.0) from Python console. i have experienced a temp name and QgsProcessingOutputRasterLayer
see screencopy "Question IDW KO for temp file"
Here is my test code :
from processing.core.Processing import Processing
Processing.initialize()
versionSAGA = processing.algs.saga.SagaUtils.getInstalledVersion()
print( versionSAGA)
info_extent= '796018.2658206049,6674128.609732771,796079.989864021,6674254.041102098 [EPSG:2154]'
IDW_SAGA = { 'SHAPES' : 'D:/GIS/DATA/POINTS_L93.shp',
'FIELD' : 'DIAM', 'DW_WEIGHTING' : 1, 'DW_IDW_POWER' : 2, 'DW_IDW_OFFSET' : False, 'DW_BANDWIDTH' : 1,
'SEARCH_RANGE' : 0, 'SEARCH_RADIUS' : 100, 'SEARCH_POINTS_ALL' : 0,
'SEARCH_POINTS_MIN' : 1, 'SEARCH_POINTS_MAX' : 10, 'SEARCH_DIRECTION' : 0,
'OUTPUT_EXTENT' : info_extent, 'TARGET_USER_SIZE' : 100, 'TARGET_DEFINITION' : 1, 'TARGET_USER_FITS' : 0,
'TARGET_TEMPLATE' : '',
'TARGET_OUT_GRID' : 'C:/Users/Utilisateur/AppData/Local/Temp/processing_30acb258f1ae40db85c6dd6a0f0ab5aa/f17c58dbd75747269ca73df49c2a4b6h/TARGET_OUT_GRID.sdat' }
print( IDW_SAGA)
processing.run("saga:inversedistanceweightedinterpolation", IDW_SAGA)
log when sagaAlgoritm crashes :
2018-02-15T10:55:03 CRITICAL Traceback (most recent call last):
File "C:/PROGRA~1/QGIS2~1.99/apps/qgis-dev/./python/plugins\processing\algs\saga\SagaAlgorithm.py", line 170, in processAlgorithm
exportCommand = self.exportRasterLayer(param.name(), layer)
File "C:/PROGRA~1/QGIS2~1.99/apps/qgis-dev/./python/plugins\processing\algs\saga\SagaAlgorithm.py", line 372, in exportRasterLayer
if layer.source() in sessionExportedLayers:
AttributeError: 'NoneType' object has no attribute 'source'
Running QGIS3 B4be39f98b
SAGA is 2.3.2
History
#1
Updated by Alexander Bruy over 6 years ago
- Assignee deleted (
Alexander Bruy)
#2
Updated by Giovanni Manghi over 6 years ago
- Priority changed from Normal to High
#3
Updated by Giovanni Manghi over 6 years ago
- Status changed from Open to Feedback
#4
Updated by Jean Hemmi over 6 years ago
Giovanni Manghi wrote:
I'm not sure I understand how to replicate the issue. Is about when you run the tool and let it create a temp file instead of saving the result to a specific disk location and format?
My question can be resume by #18183 ('TARGET_OUT_GRID' : None is not accepted by QGIS3).
During my first test, i've try to let the tool create the raster and during a second test, i've not found how to specify a result to a specific location.
Issue 18187 is another problem (described in the screenshot "OK Running SAGA IDW")
#5
Updated by Jean Hemmi over 6 years ago
- Status changed from Feedback to Open
The problem is on under 3.0.0-Girona 001c80b0c3
#6
Updated by Giovanni Manghi over 6 years ago
- Affected QGIS version changed from master to 3.0.0
#7
Updated by Jean Hemmi over 6 years ago
- Assignee set to Victor Olaya
I'had mentionned that related probleme #18183 can resume this issue but my question is :
Unable to call Saga IDW from python console TARGET_OUT_GRID : 'None' is not accepted
How can i call Saga IDW from python console and keep result in a temporary file ?
#8
Updated by Jean Hemmi over 6 years ago
- Assignee deleted (
Victor Olaya)
I'have experienced the same problème under Linux &
Qgis 3.1.0-Master Révision du code 871132eae6
Saga is 2.3.1.
algo this time is library : Spline Interpolation
tool : Cubic Spline Approximation
{ 'SHAPES' : '/data/GIS/DATA/DATA_PHY/SORTIE_PHY/PHY3/vecteur/PHY3_POINTS_SANS_0_L93.shp', 'FIELD' : 'DIAM', 'NPMIN' : 3, 'NPMAX' : 20, 'NPPC' : 5, 'K' : 140, 'OUTPUT_EXTENT' : '795825.2212942,796084.9317131,6674126.9668843,6674710.7083225 [EPSG:2154]', 'TARGET_USER_SIZE' : 100, 'TARGET_USER_FITS' : 0, 'TARGET_OUT_GRID' : '/tmp/processing_7d21d13f385c482c9d0e8c84b92e4203/3fc12265eec64e1c82a4523436a15f23/TARGET_OUT_GRID.sdat' }
grid_spline "Cubic Spline Approximation" -TARGET_DEFINITION 0 -SHAPES "/data/GIS/DATA/DATA_PHY/SORTIE_PHY/PHY3/vecteur/PHY3_POINTS_SANS_0_L93.shp" -FIELD "DIAM" -NPMIN 3 -NPMAX 20 -NPPC 5 -K 140.0 -TARGET_USER_XMIN 795825.2212942 -TARGET_USER_XMAX 796084.9317131 -TARGET_USER_YMIN 6674126.9668843 -TARGET_USER_YMAX 6674710.7083225 -TARGET_USER_SIZE 100.0 -TARGET_USER_FITS 0 -TARGET_OUT_GRID "/tmp/processing_7d21d13f385c482c9d0e8c84b92e4203/3fc12265eec64e1c82a4523436a15f23/TARGET_OUT_GRID.sdat"
The raster file is created OK when using "Processing dialog".
It is KO from python console and from a python plugin.
Thanks for your help.
#9
Updated by Jean Hemmi over 6 years ago
- Assignee set to Victor Olaya
I had un-assigned by error.
Thanks for any help
#10
Updated by Jean Hemmi over 6 years ago
- Status changed from Open to Closed
For IDW SAGA problem 'NoneType' object has no attribute 'source'
was 'TARGET_TEMPLATE' : '' is not supported but 'TARGET_TEMPLATE' : None is ignored by processing.
Tested on Windows & Linux.
Solved & closed as a user-error.