[Qgis-user] problems with 'geometry creator'

[Tobias Wendorff]

Hi Martin!

You are right. I just have changed it to multilinestring - but also without success :(

Best regards,
Tobias 

-- 
Von einem iPhone gesendet und wird daher Fehler enthalten.

> Am 11.06.2017 um 09:47 schrieb Matthias Kuhn <matthias at opengis.ch>:
> 
> Hi Tobias,
> 
> If I read this correctly, you have got 5 features, each with a
> LineString and what you would like to have is 1 feature with a connected
> line.
> 
> Geometry generators work on individual features (5 features in, 5
> features out).
> 
> What you will need instead is something with support for aggregation
> like either a virtual layer or it might be possible to use aggregate
> expression function with "collect".
> 
> Matthias
> 
>> On 6/11/17 2:01 AM, Tobias Wendorff wrote:
>> Hi there!
>> 
>> I'm experiencing problems using "geometry generator". Perhaps I don't
>> understand this tool correctly or perhaps I'm using it wrong. Could
>> anyone please help a look?
>> 
>> I've created five linestrings, which are connected to each other
>> (CRS is EPSG:25832):
>> 
>> LineString (452926.429 5430258.436, 474353.217 5556034.254)
>> LineString (474353.217 5556034.254, 651518.643 5480403.768)
>> LineString (651518.643 5480403.768, 768696.380 5642150.590)
>> LineString (768696.380 5642150.590, 716125.982 5713907.693)
>> LineString (716125.982 5713907.693, 797502.108 5831380.483)
>> 
>> I'm using single layer type "Geometry creator" and have set the type
>> to LineString/MultiLineString. Then I've tried these functions:
>> 
>> "line_merge( $geometry )" or "segments_to_lines( $geometry )"
>> 
>> Then I've used the bundled style "Road" on the created geometry.
>> But this is what's displayed: http://i.imgur.com/NwbIHjg.png
>> Actually, I thought, I would get a connected line, like using
>> "Symbol layers".
>> 
>> Can anyone help me with this? Am I doing it wrong?
>> I'm using QGIS v2.18.9.
>> 
>> Best regards,
>> Tobias
>> 
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> 
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