[Qgis-user] Identify tool and closest vertices (z-values)

[Karl Magnus Jönsson]

I tested against:
PostgreSQL 11.5 on x86_64-alpine-linux-musl, compiled by gcc (Alpine 8.3.0) 8.3.0, 64-bit
Postgis:
2.5 USE_GEOS=1 USE_PROJ=1 USE_STATS=1

Karl-Magnus Jönsson


Från: Andreas Neumann <a.neumann at carto.net>
Skickat: den 24 maj 2022 12:22
Till: Karl Magnus Jönsson <Karl-Magnus.Jonsson at kristianstad.se>
Kopia: QGIS User List <Qgis-user at lists.osgeo.org>
Ämne: Re: Sv: [Qgis-user] Identify tool and closest vertices (z-values)


Hi Karl-Magnus,

Thank you for your confirmation.

It must be something weird about 3D detection from QGIS for Postgis layers. I tested with other 3D layers and they work fine, but the layer that fails to work with Z-Values is from a much older Postgis-DB.

Maybe it would work fine if we transfer the data to a more modern Postgis-DB ...

QGIS display the Metadata as Polygon (PolygonZ) though ...

Strange ...

Andreas

On 2022-05-24 11:21, Karl Magnus Jönsson wrote:

Hi!

It seems to work for me in 3.22.5 with Postgis PolygonZ. Can't remember that I've done any custom settings for that.

[cid:image001.png at 01D86F76.4EA1F2D0]



Karl-Magnus Jönsson





Från: Qgis-user <qgis-user-bounces at lists.osgeo.org<mailto:qgis-user-bounces at lists.osgeo.org>> För Andreas Neumann via Qgis-user
Skickat: den 24 maj 2022 10:53
Till: QGIS User List <Qgis-user at lists.osgeo.org<mailto:Qgis-user at lists.osgeo.org>>
Ämne: [Qgis-user] Identify tool and closest vertices (z-values)



Hi,

We have a a Postgis PolygonZ data set an want to query the third dimension of the closest vertex. According to my users, this used to work fine in older QGIS versions, but now we can only see the x/y values and not z-values anymore.

I just tested it on QGIS 3.22 (LTR) and can conform that the z-values are not displayed in the derived data of the identify tool.

Is there any hidden setting that helps us to display the z-values again - or a connection parameter that forces QGIS to treat it correctly as a 3d data set?

Thank you for any hints,

Andreas


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