[Qgis-user] QGIS 2.18 vs. QGIS 3

[Velizar Strumberger]

Thank you all
Strumbi

On Thu, Mar 1, 2018 at 10:48 AM, DelazJ <delazj at gmail.com> wrote:

> 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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