[Qgis-user] Linear referencing in QGIS

[Matthias Kuhn]

Hi Andreas,

I think a geometry generator symbol should be able to do this.

1) On the point layer join the line layer
2) Generate points from line information plus offset

Matthias

On 09/07/2016 04:51 PM, Neumann, Andreas wrote:
> Hi,
> 
> Yes, I know about LR expressions in the current master versions.
> 
> So one could visualize the events table through a virtual geometry
> column - would that work?
> 
> I will forward all this information to my friend.
> 
> Greetings,
> 
> Andreas
> 
> On 2016-09-07 15:34, Matthias Kuhn wrote:
> 
>> Hi Andreas,
>>
>> In QGIS 2.18 / QGIS 3.0 this should be possible via expressions:
>>
>> https://github.com/qgis/QGIS/commit/e110ba7d54b0ac7d3f63e8ed7eaebb2845f9f38c
>>
>> Best regards
>> Matthias
>>
>> On 09/07/2016 02:24 PM, Neumann, Andreas wrote:
>>> Hi,
>>>
>>> A friend of mine asked me if QGIS can do linear referencing - e.g.
>>> symbolizing road data speed limits along a road, lets say from km 0 to
>>> 0.76 there is a limit of 50 km/h, from 0.76 to 1.23 there is 80 km/h
>>> limit, etc.
>>>
>>> The idea is to symbolize these road segments without having to actually
>>> split the data into bits. And hopefully without having to generate
>>> derived tables that have no link to the original data.
>>>
>>> Is QGIS able to do this, perhaps with a plugin?
>>>
>>> Thanks for any hints,
>>>
>>> Andreas
>>>
>>>  
>>>
>>>
>>> _______________________________________________
>>> Qgis-user mailing list
>>> Qgis-user at lists.osgeo.org <mailto:Qgis-user at lists.osgeo.org>
>>> List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
>>> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user
>>>
>> _______________________________________________
>> Qgis-user mailing list
>> Qgis-user at lists.osgeo.org <mailto:Qgis-user at lists.osgeo.org>
>> List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
>> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user
> 
>  
> 
>