[Qgis-user] QGIS WFS 3D vector layer treated as 2D
Alessandro Pasotti
apasotti at gmail.com
Mon Aug 4 00:48:12 PDT 2025
Hi Mike,
thank you for the tests, it would be really helpful if you could share the
endpoints of the failing tests (i.e. empty 3D layer, 3D layer with
geometry-less first feature etc.).
I'm happy to have a look.
Kind regards.
On Mon, Aug 4, 2025 at 8:43 AM Mike Bundock <mike at augview.net> wrote:
> Hi
> It appears that:
> QGIS 3.34.14-Prizen version was working correctly with WFS 3D geometries
> (at least the LinestringZ and MultiLinestringZ that i tested)
> QGIS 3.40.4 does not recognise the z values of MultiLinestringZ. It may
> be finding the first record and seeing Z values are 0, then dropping the Z
> altogether.
> QGIS 3.99.0 Master (nightly build) now correctly sees the geometry types *ONLY
> IF* the first record has a geometry.
> I suspect that if the table is empty or the first feature does not have a
> geometry, the geometry type will be skipped - oops!
> I needed to use the new option 'Force Initial GetFeature'
> [image: image.png]
> [image: image.png]
>
> regards
>
> *Mike Bundock* | CEO
>
> Augview | P O Box 125046, St Heliers, Auckland 1740, New Zealand
>
> p: +64 9 575 5298 | m: +64 27 575 5298 | e:
> mailto:mike.bundock at augview.net <mike.bundock at augview.net>| w:
> www.augview.net
>
>
>
> Winner of Innovation & Commercialisation and Supreme Awards at 2014 NZ
> Spatial Excellence Awards
>
> Winner of Innovation & Commercialisation Award at 2014 Asia Pacific
> Spatial Excellence Awards
>
>
> On Fri, 1 Aug 2025 at 21:30, Alessandro Pasotti <apasotti at gmail.com>
> wrote:
>
>> Hi,
>>
>> I have fixed this recently: https://github.com/qgis/QGIS/pull/62449
>>
>> Can you try with a nightly build of QGIS and file a bug report if the
>> issue persists?
>>
>>
>>
>> On Thu, Jul 31, 2025 at 10:34 AM Mike Bundock via QGIS-User <
>> qgis-user at lists.osgeo.org> wrote:
>>
>>> Hi
>>> a 3D vector WFS layer with geometry type MultiLineStringZ, published by
>>> GeoServer is seen as 2D in QGIS but is published correctly as 3D.
>>>
>>> QGIS Version 3.40.4-Bratislava
>>> QGIS reports the geometry type for geometry field geom3d as Geometry
>>> Line (MultiLineString)
>>> Identify Results shows no Z values for the geometry:
>>> [image: image.png]
>>>
>>> *The source data* is in PostGIS and is 3D - an example is:
>>> [image: image.png]
>>> *WFS queries to the data source show the geometry is 3D* in the
>>> geoserver WFS response:
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> *<?xml version="1.0" encoding="UTF-8"?><wfs:FeatureCollection
>>> xmlns:xs="http://www.w3.org/2001/XMLSchema
>>> <http://www.w3.org/2001/XMLSchema>"
>>> xmlns:wfs="http://www.opengis.net/wfs/2.0 <http://www.opengis.net/wfs/2.0>"
>>> xmlns:testns="https://augview.net/testns <https://augview.net/testns>"
>>> xmlns:gml="http://www.opengis.net/gml/3.2 <http://www.opengis.net/gml/3.2>"
>>> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance
>>> <http://www.w3.org/2001/XMLSchema-instance>" numberMatched="1"
>>> numberReturned="1" timeStamp="2025-07-31T08:25:23.092Z"
>>> xsi:schemaLocation="http://www.opengis.net/wfs/2.0
>>> <http://www.opengis.net/wfs/2.0>
>>> https://registration.augview.net/geoserver/schemas/wfs/2.0/wfs.xsd
>>> <https://registration.augview.net/geoserver/schemas/wfs/2.0/wfs.xsd>
>>> https://augview.net/testns <https://augview.net/testns>
>>> https://registration.augview.net/geoserver/testns/wfs?service=WFS&version=2.0.0&request=DescribeFeatureType&typeName=testns%3AWater_Pipe_Local
>>> <https://registration.augview.net/geoserver/testns/wfs?service=WFS&version=2.0.0&request=DescribeFeatureType&typeName=testns%3AWater_Pipe_Local>
>>> http://www.opengis.net/gml/3.2 <http://www.opengis.net/gml/3.2>
>>> https://registration.augview.net/geoserver/schemas/gml/3.2.1/gml.xsd
>>> <https://registration.augview.net/geoserver/schemas/gml/3.2.1/gml.xsd>">
>>> <wfs:member> <testns:Water_Pipe_Local
>>> gml:id="Water_Pipe_Local.726022"> <testns:id>726022</testns:id>
>>> <testns:subtype>1</testns:subtype> <testns:geom3d>
>>> <gml:MultiCurve srsName="urn:ogc:def:crs:EPSG::2193"
>>> srsDimension="3" gml:id="Water_Pipe_Local.726022.geom3d">
>>> <gml:curveMember> <gml:LineString
>>> gml:id="Water_Pipe_Local.726022.geom3d.1">
>>> <gml:posList>5936450.85824186 1754007.66665035 100.6 5936452.36323351
>>> 1754005.52882205 101.4 5936455.4422984 1754005.56829724
>>> 101.7</gml:posList> </gml:LineString>
>>> </gml:curveMember> </gml:MultiCurve>
>>> </testns:geom3d> </testns:Water_Pipe_Local>
>>> </wfs:member></wfs:FeatureCollection>*
>>>
>>> Is there something I am not doing correctly when connecting to the data
>>> via WFS?
>>>
>>> regards
>>>
>>> Mike
>>>
>>> *Mike Bundock* | CEO
>>>
>>> Augview | P O Box 125046, St Heliers, Auckland 1740, New Zealand
>>>
>>> p: +64 9 575 5298 | m: +64 27 575 5298 | e:
>>> mailto:mike.bundock at augview.net <mike.bundock at augview.net>| w:
>>> www.augview.net
>>>
>>>
>>>
>>> Winner of Innovation & Commercialisation and Supreme Awards at 2014 NZ
>>> Spatial Excellence Awards
>>>
>>> Winner of Innovation & Commercialisation Award at 2014 Asia Pacific
>>> Spatial Excellence Awards
>>> _______________________________________________
>>> QGIS-User mailing list
>>> QGIS-User at lists.osgeo.org
>>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
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>>>
>>
>>
>> --
>> Alessandro Pasotti
>> QCooperative: www.qcooperative.net
>> ItOpen: www.itopen.it
>>
>
--
Alessandro Pasotti
QCooperative: www.qcooperative.net
ItOpen: www.itopen.it
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