Re: [Qgis-user] QGIS 2.18 vs. QGIS 3

2018-03-01 Thread Patrick Dunford 
2.18 can read 3's project files well but stuff like styles may not be 
interpreted.



On 01/03/18 22:37, Andreas Neumann wrote:


Hi Strumbi,

They can be installed and run in parallel. 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 10:22, 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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Re: [Qgis-user] QGIS 2.18 vs. QGIS 3

2018-03-01 Thread Luigi Pirelli 
Ho! I Assumed you are on win... is it true?
Luigi Pirelli

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On 1 March 2018 at 10:31, Luigi Pirelli  wrote:
> no
> Luigi Pirelli
>
> **
> * LinkedIn: https://www.linkedin.com/in/luigipirelli
> * Stackexchange: http://gis.stackexchange.com/users/19667/luigi-pirelli
> * GitHub: https://github.com/luipir
> * Mastering QGIS 2nd Edition:
> * 
> https://www.packtpub.com/big-data-and-business-intelligence/mastering-qgis-second-edition
> * Hire me: http://goo.gl/BYRQKg
> **
>
>
> On 1 March 2018 at 10:22, 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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Re: [Qgis-user] QGIS 2.18 vs. QGIS 3

2018-03-01 Thread Andreas Neumann 

Hi Harrissou,

Sorry, I was just assuming that question was related to Windows (where 
>90% of our user base is).


On Linux it is more complicated. To do that on Linux, I compile QGIS 
from source myself. Than it is possible with different start scripts 
that have different library paths.


There may be other ways to install both versions from binaries on Linux 
that I am not aware of.


There were discussions about supporting Snap or flatpack packages in the 
future - but they don't exist yet. This may be a way to install both 
versions on Linux as well.


Andreas


On 01.03.2018 10:48, DelazJ wrote:

Hi,

2018-03-01 10:37 GMT+01:00 Andreas Neumann >:


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 :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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Re: [Qgis-user] QGIS 2.18 vs. QGIS 3

2018-03-01 Thread Velizar Strumberger 
Thank you all
Strumbi

On Thu, Mar 1, 2018 at 10:48 AM, DelazJ  wrote:

> Hi,
>
> 2018-03-01 10:37 GMT+01:00 Andreas Neumann :
>
>> 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
>>
>>
>> ___
>> Qgis-user mailing listqgis-u...@lists.osgeo.org
>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>>
>>
>> ___
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>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>
>
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Re: [Qgis-user] QGIS 2.18 vs. QGIS 3

2018-03-01 Thread DelazJ 
Hi,

2018-03-01 10:37 GMT+01:00 Andreas Neumann :

> 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
>
>
> ___
> Qgis-user mailing listqgis-u...@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>
>
>
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Re: [Qgis-user] QGIS 2.18 vs. QGIS 3

2018-03-01 Thread Andreas Neumann 

Hi Strumbi,

They can be installed and run in parallel. 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 10:22, 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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Re: [Qgis-user] QGIS 2.18 vs. QGIS 3

2018-03-01 Thread Luigi Pirelli 
no
Luigi Pirelli

**
* LinkedIn: https://www.linkedin.com/in/luigipirelli
* Stackexchange: http://gis.stackexchange.com/users/19667/luigi-pirelli
* GitHub: https://github.com/luipir
* Mastering QGIS 2nd Edition:
* 
https://www.packtpub.com/big-data-and-business-intelligence/mastering-qgis-second-edition
* Hire me: http://goo.gl/BYRQKg
**


On 1 March 2018 at 10:22, 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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> Qgis-user@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
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