QGIS SAGA "Natural Neighbourhood" gridding error

Question

I'm having issues with saving my grid out to file. Every time I try, I get the error " The output layer could was not generated"

C:\Users\Name\Documents\QGIS\Rav.tif

'Check error log for more information'

I tried the option of save to temporary location but same issue and as you would notice,my path does not contain any whitespace...

I'm using QGIS 3.0 and this was the same issue with 2.2.18 Las Palmas version

I checked this question however QGIS Processing error with SAGA, "output layer could not be open"

Here's the log

Processing algorithm… AlgorithmDialog Input parameters: { 'SHAPES' : 'C:/Users/HP/Documents/QGIS/Ravine/RavSpotH.shp', 'FIELD' : 'ALT', 'SIBSON' : True, 'OUTPUT_EXTENT' : '7.924584,7.933957,5.04092,5.04547 [EPSG:32632]', 'TARGET_USER_SIZE' : 0.0005, 'TARGET_USER_FITS' : 0, 'TARGET_OUT_GRID' : 'C:/Users/HP/Documents/QGIS/Ravine/RavDEM.tif' }

grid_gridding "Natural Neighbour" -TARGET_DEFINITION 0 -SHAPES "C:/Users/HP/Documents/QGIS/Ravine/RavSpotH.shp" -FIELD "ALT" -SIBSON true -TARGET_USER_XMIN 7.924584 -TARGET_USER_XMAX 5.04092 -TARGET_USER_YMIN 7.933957 -TARGET_USER_YMAX 5.04547 -TARGET_USER_SIZE 0.0005 -TARGET_USER_FITS 0 -TARGET_OUT_GRID "C:/Users/HP/Documents/QGIS/Ravine/RavDEM.tif"

C:\PROGRA~1\QGIS3~1.0\bin>set SAGA=C:/PROGRA~1/QGIS3~1.0/apps\saga-ltr

C:\PROGRA~1\QGIS3~1.0\bin>set SAGA_MLB=C:/PROGRA~1/QGIS3~1.0/apps\saga-ltr\modules

C:\PROGRA~1\QGIS3~1.0\bin>PATH=C:\PROGRA~1\QGIS3~1.0\apps\Python36\lib\site-packages\numpy\core;C:\PROGRA~1\QGIS3~1.0\apps\qgis\bin;C:\PROGRA~1\QGIS3~1.0\apps\Python36;C:\PROGRA~1\QGIS3~1.0\apps\Python36\Scripts;C:\PROGRA~1\QGIS3~1.0\apps\qt5\bin;C:\PROGRA~1\QGIS3~1.0\apps\Python27\Scripts;C:\PROGRA~1\QGIS3~1.0\bin;C:\Windows\system32;C:\Windows;C:\Windows\system32\WBem;C:/PROGRA~1/QGIS3~1.0/apps\saga-ltr;C:/PROGRA~1/QGIS3~1.0/apps\saga-ltr\modules

C:\PROGRA~1\QGIS3~1.0\bin>saga_cmd grid_gridding "Natural Neighbour" -TARGET_DEFINITION 0 -SHAPES "C:/Users/HP/Documents/QGIS/Ravine/RavSpotH.shp" -FIELD "ALT" -SIBSON true -TARGET_USER_XMIN 7.924584 -TARGET_USER_XMAX 5.04092 -TARGET_USER_YMIN 7.933957 -TARGET_USER_YMAX 5.04547 -TARGET_USER_SIZE 0.0005 -TARGET_USER_FITS 0 -TARGET_OUT_GRID "C:/Users/HP/Documents/QGIS/Ravine/RavDEM.tif" Unknown option 'SIBSON'

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SAGA Version: 2.3.2 (64 bit)

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library path: C:\PROGRA~1\QGIS3~1.0\apps\saga-ltr\modules\ library name: grid_gridding library : Gridding tool : Natural Neighbour author : O.Conrad (c) 2008 processors : 2 [2]

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Usage: saga_cmd grid_gridding 3 [-SHAPES ] [-FIELD ] [-TARGET_DEFINITION ] [-TARGET_USER_SIZE ] [-TARGET_USER_XMIN ] [-TARGET_USER_XMAX ] [-TARGET_USER_YMIN ] [-TARGET_USER_YMAX ] [-TARGET_USER_FITS ] [-TARGET_TEMPLATE ] [-TARGET_OUT_GRID ] [-METHOD ] [-WEIGHT ] -SHAPES: Points Shapes (input) -FIELD: Attribute Table field -TARGET_DEFINITION: Target Grid System Choice Available Choices: [0] user defined [1] grid or grid system Default: 0 -TARGET_USER_SIZE: Cellsize Floating point Minimum: 0.000000 Default: 1.000000 -TARGET_USER_XMIN: Left Floating point Default: 0.000000 -TARGET_USER_XMAX: Right Floating point Default: 100.000000 -TARGET_USER_YMIN: Bottom Floating point Default: 0.000000 -TARGET_USER_YMAX: Top Floating point Default: 100.000000 -TARGET_USER_FITS: Fit Choice Available Choices: [0] nodes [1] cells Default: 0 -TARGET_TEMPLATE: Target System Grid (optional input) -TARGET_OUT_GRID: Target Grid Grid (output) -METHOD: Method Choice Available Choices: [0] Linear [1] Sibson [2] Non-Sibsonian Default: 1 -WEIGHT: Minimum Weight Floating point Maximum: 0.000000 Default: 0.000000

C:\PROGRA~1\QGIS3~1.0\bin>exit Execution completed in 20.94 seconds Results: {'TARGET_OUT_GRID': 'C:/Users/HP/Documents/QGIS/Ravine/RavDEM.tif'}

Loading resulting layers The following layers were not correctly generated. C:/Users/HP/Documents/QGIS/Ravine/RavDEM.tif You can check the 'Log Messages Panel' in QGIS main window to find more information about the execution of the algorithm.

Answer 1

This bug was fixed in QGIS 3.2 - looks like an upgrade is in order!