Hello Markus, Stefan, all,
thanks for all your advice. New challenges have emerged, as the dataset is
defined as a polyhedral surface:
I upgraded to GRASS 7.6.1 which comes with GDAL 2.3.1.
The data sources are official CityGML files provided by the German Federal
Agency for Cartographyand Geodesy (Bundesamt für Kartographie), which have an
".xml"-extension.
v.in.ogr -2 -o --o input=TEST.xml output=TEST01
throws several warnings and creates an empty vector without an points/lines in
it:
Warning 1: Unrecognized geometry type : 1015 [<===
note this!]
No projection information available for layer <Building>
Übersteuere die Überprüfung der Projektion.
Check if OGR layer <Building> contains polygons...
100%
WARNUNG: Vektorkarte <SMALL01> existiert bereits und wird überschrieben.
Creating attribute table for layer <Building>...
Importing 1 features (OGR layer <Building>)...
WARNUNG: Skipping unsupported geometry type 'POLYHEDRALSURFACE' [<===
note this!]
100%
-----------------------------------------------------
Erstelle Topologie für die Vektorkarte <SMALL01@PERMANENT>...
Registriere Primitive...
WARNUNG: Input data contains 3D features. Created vector is 2D only,
disable -2 flag to import 3D vector.
This problem seems to be ogr/gdal related:
ogrinfo -al TEST.xml
describes the geometry as a POLYHEDRALSURFACE Z (((412033.466 5812969.869
...))).
ogr2ogr -f "GML" TEST.gml TEST.xml fails (some effect when trying other target
formats like CSV or ESRI shape:
Warning 1: Unrecognized geometry type : 1015
ERROR 6: Unsupported geometry type 3D PolyhedralSurface
ERROR 1: Export of geometry to GML failed
ERROR 1: Terminating translation prematurely after failed
translation of layer Building (use -skipfailures to skip errors)
There is GDAL documentation about surfaces
(https://gdal.org/development/rfc/rfc64_triangle_polyhedralsurface_tin.html),
but I couldn't find anything about transformations/pruning from 3D to 2D.
The CGAL library appears to be capable to handle such surfaces, but
GIS-integration seems to be limited (https://www.cgal.org/).
Ideas on how to proceed, anyone ?
best,
Peter
<[email protected]>
> Gesendet: Dienstag, 06. August 2019 um 14:46 Uhr
> Von: [email protected]
> An: [email protected]
> Betreff: grass-user Digest, Vol 160, Issue 5
>
> Send grass-user mailing list submissions to
> [email protected]
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>
>
> Today's Topics:
>
> 1. Re: Problems starting grass 7.4.1 in ubuntu (Markus Metz)
> 2. Re: wms google (Micha Silver)
> 3. Re: Wrangling CityGML with GRASS ? (Stefan Blumentrath)
> 4. Re: Wrangling CityGML with GRASS ? (Peter Löwe)
> 5. Re: Wrangling CityGML with GRASS ? (Markus Metz)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 5 Aug 2019 22:32:12 +0200
> From: Markus Metz <[email protected]>
> To: Sebastián Dietrich <[email protected]>
> Cc: grass-user <[email protected]>
> Subject: Re: [GRASS-user] Problems starting grass 7.4.1 in ubuntu
> Message-ID:
> <CAG+h=fgejqga8nehu3sf_hsa6ynsnkozvdul1zck8fk8um2...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> On Mon, Aug 5, 2019 at 5:35 PM Sebastián Dietrich <[email protected]>
> wrote:
> >
> > Hi everyone, when i try to launch g.gui i get the following message:
> >
> > GRASS 7.4.1 (EPSG5344):~/Documentos/grassdata > g.gui
> > Lanzando GUI <wxpython> en el fondo, por favor espere...
> > Traceback (most recent call last):
> > File "/usr/lib/grass74/gui/wxpython/wxgui.py", line 25, in <module>
> > from core import globalvar
> > File "/usr/lib/grass74/gui/wxpython/core/globalvar.py", line 39, in
> <module>
> > 'locale')).ugettext
> > AttributeError: 'GNUTranslations' object has no attribute 'ugettext'
> > [MÁSCARA ráster presente]
> > GRASS 7.4.1 (EPSG5344):~/Documentos/grassdata >
> >
> > Can someone help with this issue?
>
> GNUTranslations has an attribute ugettext only in Python2, not in Python3.
> Make sure that the link "python" points to "python2", test with "python
> --version"
>
> Markus M
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> ------------------------------
>
> Message: 2
> Date: Tue, 6 Aug 2019 09:19:31 +0300
> From: Micha Silver <[email protected]>
> To: Sebastián Dietrich <[email protected]>
> Cc: Ken Mankoff <[email protected]>, [email protected]
> Subject: Re: [GRASS-user] wms google
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset="utf-8"
>
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>
> ------------------------------
>
> Message: 3
> Date: Tue, 6 Aug 2019 09:13:57 +0000
> From: Stefan Blumentrath <[email protected]>
> To: "Peter Löwe" <[email protected]>, "[email protected]"
> <[email protected]>
> Subject: Re: [GRASS-user] Wrangling CityGML with GRASS ?
> Message-ID:
>
> <he1pr0201mb21405732c039676e8a785d9c9e...@he1pr0201mb2140.eurprd02.prod.outlook.com>
>
> Content-Type: text/plain; charset="utf-8"
>
> Hi Peter,
>
> Not personally...
> I would guess you would import CityGML through GDAL:
> https://3d.bk.tudelft.nl/svitalis/citygml/gdal/2017/07/24/messing-around-with-citygml-on-gdal-2.2.html
> There you can create subsets and the like...
>
> What are you planning to do with it, roughly?
>
> Cheers
> Stefan
>
>
> -----Original Message-----
> From: grass-user <[email protected]> On Behalf Of "Peter
> Löwe"
> Sent: torsdag 1. august 2019 11:10
> To: [email protected]
> Subject: [GRASS-user] Wrangling CityGML with GRASS ?
>
> Hi list,
>
> I'm looking for information/howtos/etc. about how to deal with large CityGML
> data sets using GRASS.
>
> Has anybody already explored this ?
>
> Best,
> Peter
>
> <[email protected]>
>
> _______________________________________________
> grass-user mailing list
> [email protected]
> https://lists.osgeo.org/mailman/listinfo/grass-user
>
> ------------------------------
>
> Message: 4
> Date: Tue, 6 Aug 2019 12:23:29 +0200
> From: "Peter Löwe" <[email protected]>
> To: "Stefan Blumentrath" <[email protected]>
> Cc: "[email protected]" <[email protected]>
> Subject: Re: [GRASS-user] Wrangling CityGML with GRASS ?
> Message-ID:
>
> <trinity-c2c845f5-697c-4269-afaf-8be6360d44d9-1565087009741@3c-app-gmx-bs34>
>
> Content-Type: text/plain; charset=UTF-8
>
> Hi Stefan,
>
> thanks for the link: That's also the latest information we found so far,
> except for several OSGeo conference recordings (e.g.
> https://doi.org/10.5446/40913 https://doi.org/10.5446/40694).
> My colleagues have ingested CityGML datasets into R, which caused issues with
> the vector-topology for individual buildings. Also, we have to cope with
> significant amounts of CityGML datasets, which would require very large
> amounts of RAM, if the processing is done in R. Since GRASS locations are
> storage-effective AND GRASS handles vector topologies well, I had hoped that
> someone already explored this approach further :-)
>
> If this should be not the case (yet) we'll gladly report at one of next years
> FOSS4G events.
>
> Best,
> peter
>
> <[email protected]>
>
>
> > Gesendet: Dienstag, 06. August 2019 um 11:13 Uhr
> > Von: "Stefan Blumentrath" <[email protected]>
> > An: "Peter Löwe" <[email protected]>, "[email protected]"
> > <[email protected]>
> > Betreff: RE: [GRASS-user] Wrangling CityGML with GRASS ?
> >
> > Hi Peter,
> >
> > Not personally...
> > I would guess you would import CityGML through GDAL:
> > https://3d.bk.tudelft.nl/svitalis/citygml/gdal/2017/07/24/messing-around-with-citygml-on-gdal-2.2.html
> > There you can create subsets and the like...
> >
> > What are you planning to do with it, roughly?
> >
> > Cheers
> > Stefan
> >
> >
> > -----Original Message-----
> > From: grass-user <[email protected]> On Behalf Of "Peter
> > Löwe"
> > Sent: torsdag 1. august 2019 11:10
> > To: [email protected]
> > Subject: [GRASS-user] Wrangling CityGML with GRASS ?
> >
> > Hi list,
> >
> > I'm looking for information/howtos/etc. about how to deal with large
> > CityGML data sets using GRASS.
> >
> > Has anybody already explored this ?
> >
> > Best,
> > Peter
> >
> > <[email protected]>
> >
> > _______________________________________________
> > grass-user mailing list
> > [email protected]
> > https://lists.osgeo.org/mailman/listinfo/grass-user
> >
>
>
> ------------------------------
>
> Message: 5
> Date: Tue, 6 Aug 2019 14:45:50 +0200
> From: Markus Metz <[email protected]>
> To: Peter Löwe <[email protected]>
> Cc: Stefan Blumentrath <[email protected]>,
> "[email protected]" <[email protected]>
> Subject: Re: [GRASS-user] Wrangling CityGML with GRASS ?
> Message-ID:
> <CAG+h=fekahttz_dcbcgm8+0gbaqmq7p_eglmaendzigbtda...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi Peter,
>
> On Tue, Aug 6, 2019 at 12:23 PM "Peter Löwe" <[email protected]> wrote:
> >
> > Hi Stefan,
> >
> > thanks for the link: That's also the latest information we found so far,
> except for several OSGeo conference recordings (e.g.
> https://doi.org/10.5446/40913 https://doi.org/10.5446/40694).
>
> GML and GMLAS are supported by GDAL 2.2+. However, in order to import GMLAS
> properly, some tricks are needed (interleaved reading for non-sequential
> layers, see
> https://gdal.org/drivers/vector/gmlas.html#performance-issues-with-large-multi-layer-gml-files)
> which are built into GRASS 7.6+.
>
> > My colleagues have ingested CityGML datasets into R, which caused issues
> with the vector-topology for individual buildings.
>
> That's not related to the data format, but to the content: 3D polygons.
> These are not supported in GRASS, when importing you need to convert the
> data to 2D with v.in.ogr -2, otherwise you get corrupt topology. Maybe this
> is also needed for R.
>
> Markus M
>
> > Also, we have to cope with significant amounts of CityGML datasets, which
> would require very large amounts of RAM, if the processing is done in R.
> Since GRASS locations are storage-effective AND GRASS handles vector
> topologies well, I had hoped that someone already explored this approach
> further :-)
> >
> > If this should be not the case (yet) we'll gladly report at one of next
> years FOSS4G events.
> >
> > Best,
> > peter
> >
> > <[email protected]>
> >
> >
> > > Gesendet: Dienstag, 06. August 2019 um 11:13 Uhr
> > > Von: "Stefan Blumentrath" <[email protected]>
> > > An: "Peter Löwe" <[email protected]>, "[email protected]" <
> [email protected]>
> > > Betreff: RE: [GRASS-user] Wrangling CityGML with GRASS ?
> > >
> > > Hi Peter,
> > >
> > > Not personally...
> > > I would guess you would import CityGML through GDAL:
> > >
> https://3d.bk.tudelft.nl/svitalis/citygml/gdal/2017/07/24/messing-around-with-citygml-on-gdal-2.2.html
> > > There you can create subsets and the like...
> > >
> > > What are you planning to do with it, roughly?
> > >
> > > Cheers
> > > Stefan
> > >
> > >
> > > -----Original Message-----
> > > From: grass-user <[email protected]> On Behalf Of
> "Peter Löwe"
> > > Sent: torsdag 1. august 2019 11:10
> > > To: [email protected]
> > > Subject: [GRASS-user] Wrangling CityGML with GRASS ?
> > >
> > > Hi list,
> > >
> > > I'm looking for information/howtos/etc. about how to deal with large
> CityGML data sets using GRASS.
> > >
> > > Has anybody already explored this ?
> > >
> > > Best,
> > > Peter
> > >
> > > <[email protected]>
> > >
> > > _______________________________________________
> > > grass-user mailing list
> > > [email protected]
> > > https://lists.osgeo.org/mailman/listinfo/grass-user
> > >
> > _______________________________________________
> > grass-user mailing list
> > [email protected]
> > https://lists.osgeo.org/mailman/listinfo/grass-user
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