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I need some help with the installation of QGIS using OSGeo4W. I am using windows 7 and I want to install a 64 bit ltr release with all relevant dependencies and plugins.

I choose to install qgis with OSGeo4w to be able to update more conveniently, but I run into problems with the installation. So I do not want to use the standalone installer any more.

I choose the advanced install option in the first step to be able to install the ltr release. In the "select packeges" step under "desktop" there are a qgis-ltr option and a qgis-ltr-full option. I understood that I would need to select the qgis-ltr-full option to get all the relevant dependencies.However, my problem is that the installer shows that qgis-ltr-full is on version 2.8.2-1 while qgis-ltr is on version 2.8.9-1.

What do I need to choose here?

I do want the latest update of the ltr with all the bugfixes, but I also do not want to pick all the dependencies and plugins by hand.

Do I need to install both? Do I get the latest ltr version that way with all dependencies? Or do I end up with two separate qgis installations when I choose both?

I did google for an answer but couldn't find any.

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qgis-ltr-full is a metapackage. I don't know exactly what packages it selects, but I believe it might select things like qgis-globe-plugin and qgis-grass-plugin in addition to qgis-ltr. You will not end up with two QGIS installations. You will notice that the installation size for qgis-ltr-full is 1 KB. That's because it's just a metapackage, not the package itself.

Selecting qgis-full is not necessary to make sure that dependencies are met. After selecting packages, the next step in the OSGeo4W installer will be to confirm the installation of unmet dependencies, which you should agree to (checked by default).

As an aside, QGIS 2.14 is listed on the QGIS website as an "LTR Candidate". It will be the candidate until the next point release (2.16), at which point it will get promoted to LTR. I would strongly consider installing qgis package, which is at version 2.14.2, instead of qgis-ltr. (If you choose QGIS in the Express Desktop Install, this is what you'll end up with.)

See info on available versions and future plans here:

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    The LTR version is an older version that is intended to be updated with backports from the current release. 2.8 was the first candidate, and 2.14 will be the next one. If the developers would have dropped 2.8 with the release of 2.14, there wold be only one version of qgis. So they keep 2.8 as LTR until 2.16 is released, then 2.14 will be the LTR for some time. – AndreJ May 11 '16 at 5:51
  • @AndreJ thanks for the info, will update my answer to reflect that. The convention is a little opaque. Ubuntu for example calls their release an LTS when it is released, rather than waiting for the next release to promote it, so I didn't quite understand what LTR Candidate meant. – Lee Hachadoorian May 11 '16 at 15:56
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I would say not to worry about the version differences between the qgis / qgis-full and qgis-ltr and qgis-ltr-full install options.

Differences between version numbers after the comma of the qgis desktop option and -full metapackages still persist (MainNumber.SubVersion.PositionWhereItDiffers) but don't seem to be important in my experience.

And as Lee explained the -full options only are metapackages which trigger the selection of many usefull packages/libraries for you. So it won't change the version installation of your desktop software.

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I'm late to the party, but here's what worked for me in order to install the OSGeo4W version of LTR 3.10.3:

Download the OSGeo4W64 install package, but use the Advanced Install option instead of the Express Desktop. Continue from there with the default settings until reaching the Select Packages window. Here, turn on these options:

Desktop:

  • qgis:
  • qgis-full:
  • qgis-ltr:
  • qgis-ltr-full:

Then finish the install with the default options.

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  • Doing this you would end up with two versions of QGIS installed. You only need to choose qgis-ltr and the OSGeo4W installer will handle the rest. – HeikkiVesanto Mar 2 at 10:49
  • Ah, you may be correct. It appears that my install instructions above have allowed not only 3.10.3 (my intended version), but also 3.12 (which I don't need at the moment). I will uninstall OSGeo4W and reinstall with your advice, and report back. – Stu Smith Mar 2 at 16:22
  • I'm back after uninstalling OSGeo4W, then reinstalling with just qgis-ltr. When I now start 3.10.3, I get errors that certain plugins aren't loading correctly. Sigh... When I uninstall (again!) and go back to the install options that I list in my answer, 3.10.3 LTR works correctly. I'm not an expert with QGIS installations, and I don't understand what the various options are doing; but I've somehow landed on an approach that works for me. I appreciate your input, @HeikkiVesanto! – Stu Smith Mar 2 at 17:19
  • I agree on these settings to install both the most recent (not nightly) and LTR version of qgis with additional funcionality by chosing the -full versions. Additionally I manually add the gdal-filegdb driver (at first install) as this is not part of the -full metapackage and lets you write data to .gdb. After the first install you can rerun the setup by Advanced Install to update everything without needing to make any changes. This works for me. – jendrik Mar 4 at 9:16
  • @HeikkiVesanto There are several reasons to install both a recent and an ltr version of qgis. The recent version can provide needed new functionality and solved problems/bugs. While the ltr version provides stability of results over a longer time and will make collaborating easier by preventing version incompatibility amongst collaborators. – jendrik Mar 4 at 9:20

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