[Qgis-user] SAGA Next Gen for MacOS

[Etsuko Nonaka]

Hello Lorenzo,

Thank you for your help! I tried both QGIS 3.30.x and 3.32, but I do not
have Providers under Processing. QGIS 3.32 has SAGA Next Gen plugin already
installed, but it is version 7.2, not 7.8 as you say, and it still says
"Requires manuaö installation of SAGA 7.2 binaries."

I installed SAGA 9.0.2, and it is a standalone software package. I suppose
that I could perform the analyses in SAGA 9.0.2, export the results in
geotiff, and import them into QGIS to continue working, if I cannot get
SAGA Next Gen work as a plugin inside QGIS.

My Mac is old (7-8 years old), not the newer Apple processor.

Thank you for your help!
Etsuko

On Mon, 26 Jun 2023 at 16:20, Lorenzo Moretti via QGIS-User <
qgis-user at lists.osgeo.org> wrote:

> Hi Etsuko
>
> Inside QGIS 3.30.x for macOS there are still the old libraries of SAGA
> version 7.8 and so the SAGA Next Gen plugin works without providing any
> paths. I use this system. If, on the other hand, you want something more
> such as using SAGA 9, the latest version, where there are many new
> algorithms, you need to download SAGA for Mac, currently 9.0.2, directly
> from the SAGA website:
>
> https://sourceforge.net/projects/saga-gis/files/SAGA%20-%209/SAGA%20-%209.0.2/
> It is a normal application that you drag into Applications. Then in QGIS
> inside Processing > Providers > SAGANG > SAGA folder enter the path:
> /Applications/SAGA.app/Contents/MacOS
>
> Press OK and you have all the algorithms in the latest version of SAGA 9:
> QGIS works fine.
>
> For those who have the Apple Silicon processor, however, better install
> QGIS3, currently 3.28.7, from MacPorts. QGIS3 is native with all the native
> external libraries (including SAGA, GDAL, Grass, etc.) and the performance
> is spectacular.
>
> Regards
> Lorenzo
>
>
> Il giorno 26 giu 2023, alle ore 12:08, Etsuko Nonaka via QGIS-User <
> qgis-user at lists.osgeo.org> ha scritto:
>
> Hello the QGIS community,
>
> I wish to use SAGA Terrain Analysis - Lighting Topographic correction in
> QGIS. I installed the SAGA Next Gen plugin, and it says it requires a
> manual installation of SAGA 7.2 binaries. I see a folder for SAGA 7.2.0
> under SAGA GIS on Source Forge, but there are no binary files for Mac for
> this version.
>
> I ran Topographi Analysis despite the lacking file, it seemed to have run
> fine but was not able to save the resulting output.
>
> I contacted the SAGA help and was instructed to follow the
> installation instructions here
> https://sourceforge.net/p/saga-gis/wiki/Compiling%20SAGA%20on%20Mac%20OS%20X/
>
> However, the program failed to compile at the very last step and generated
> this error.
> CMake Error at
> /usr/local/Cellar/cmake/3.26.4/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:230
> (message):
> Could NOT find OpenMP_C (missing: OpenMP_C_FLAGS OpenMP_C_LIB_NAMES)
>
> If anyone knows how to use SAGA Next Gen on MacOS (I have macOS Monterey
> version 12.6.6), I would appreciate any help.
>
> Thank you very much.
> Etsuko
> Postdoc at U of Helsinki
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