[GIS] How to change SAGA path in QGIS 2.18 Standalone

qgisqgis-processingsaga

I have installed QGIS 2.18 Standalone (64 Bit) with SAGA GIS (2.1.2) and GRASS GIS 7.
Afterwards I have installed the newest SAGA GIS 3.0.0.

I want to change the SAGA folder in the processing options, but there is no option there anymore (like in older versions and explained in this answer).

Is there another way to change the SAGA path in QGIS 2.18?

EDIT 1:

Is it right that QGIS 2.18 doesn't support the SAGA GIS 3.0.0 version?

In this answer it its explained which Saga Algorithm Provider can be used.

EDIT 2:

I checked the Advanced Options like in the answer from HDunn. There is no SAGA_FOLDER option as well.

Best Answer

In QGIS 2.18.2 on Windows, SAGA folder option came back again. Yay!

And SAGA 3.0.0 is now up and running.

Related Solutions

QGIS – Solving Problems with Saga Integration in QGIS 2.14.4 LTR

I have tested your workcase, and I get the same error with QGIS 2.14.4 32bit and 64bit.

However, it works on QGIS 2.16.0 64bit on the same computer, and 2.14.1 on another.

So maybe you can upgrade to QGIS 2.16. Standalone Windows versions can run in parallel. You might return to 2.14.4 after running SAGA if you prefer.

See https://issues.qgis.org/issues/15320 for progress on the bugfix.

UPDATE

the issue should be fixed by now, but it may take some time to get into the downloadable binaries.

[GIS] SAGA algorithms not working on Qgis 2.18 on Mac OSX

I think the problem is that the QGIS processing tools for SAGA are sending an incorrectly-named parameter to saga_cmd, both via the description files for the saga commands, and also in the the script SagaAlgorithm214.py. The correct parameter should be "RESAMPLING" but the QGIS processing files use "INTERPOL". (These files are found on my machine at /usr/share/qgis/python/plugins/processing/algs/saga/ and /usr/share/qgis/python/plugins/processing/algs/saga/description/2.2.3).

So far I have only tried changing "INTERPOL" to "RESAMPLING" in the Python script, and in the description file for mosaicking, but after the change the mosaicking tool works fine. (I'll do a batch change on all the description files and report my results when I get a chance.)

My guess is that this is all caused by some versioning mismatch: I'm using QGIS 2.18.3 (Linux Mint 17.3), where the most recent directory for SAGA descriptions is for version 2.2.3, while my SAGA version is 2.2.7.

UPDATE: I ran the following bash commands in a terminal on my machine, and this (along with the edit to SagaAlgorithm214.py) seemed to fix the problem on the SAGA tools I spot-checked:

su -i
cd /usr/share/qgis/python/plugins/processing/algs/saga/description
mv 2.2.3 2.2.3_old
mkdir 2.2.3
cd 2.2.3_old
for i in *.txt; do sed "s/|INTERPOL|/|RESAMPLING|/g" $i > ../2.2.3/$i ; done

Best Answer

Related Solutions

QGIS – Solving Problems with Saga Integration in QGIS 2.14.4 LTR

[GIS] SAGA algorithms not working on Qgis 2.18 on Mac OSX

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