[Qgis-user] QGIS 2.18 vs. QGIS 3

[DelazJ]

Hi,

2018-03-01 10:37 GMT+01:00 Andreas Neumann <a.neumann at carto.net>:

> Hi Strumbi,
>
> They can be installed and run in parallel.
>
Easily?
I could do that on Windows or macOS but never succeeded on Linux (tried
with 2.14 and 2.18 in the past and ended up with building from source the
latest version, unless there is a difference in 2.x vs 3.x).
What would then be the steps/requirements to use the provided packages and
build different versions of QGIS on the same machine (nota: i'm still a
beginner on Linux).

Thanks,
Harrissou

> They have independent settings.
>
> The only restriction is: once you have saved a project in QGIS 3, there
> may be no way back to 2.18.
>
> The other thing to watch out is plugins or Python code: plugins and Python
> code from QGIS 2.x don't run in QGIS 3.x. They have to be revised because
> of the change from Python 2 to Python 3 and qt4 to qt5. In addition, the
> QGIS API changed considerably. Theoretically, a plugin can be written to
> work in both QGIS 2 and QGIS 3, but in practice, such plugins don't exist
> very often.
>
> Greetings,
>
> Andreas
>
> On 01.03.2018 10 <01%2003%2020%2018%2010>:22, Velizar Strumberger wrote:
>
> Hello
> I apologize if this question has been asked already. Should I uninstall
> QGIS 2.18 before I install QGIS 3.
> Thank you
> Strumbi
>
>
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