Dxf format

[aeduard]

Extend export format types with dxf.

[gioman]

I guess that would need to be added as special case because in QGIS Server this format is part of the WMS getmap request and not of the WFS GetFeature one(?).

[aeduard]

I don't understand the differences and details, but it would be a nice feature even today :). We could sponsor the development for this update.

[Gustry]

I see "DXF" when right clicking on a layer → "Save features as", so maybe not ? Have you tried to add it ? https://github.com/3liz/qgis-wfsOutputExtension/blob/master/wfsOutputExtension/definitions.py

[gioman]

Have you tried to add it ? https://github.com/3liz/qgis-wfsOutputExtension/blob/master/wfsOutputExtension/definitions.py

@Gustry I added

    Dxf = Format(
        content_type='application/dxf',
        filename_ext='dxf',
        force_crs=None,
        ogr_provider='AutoCAD DXF',
        ogr_datasource_options=(),
        zip=False,
        ext_to_zip=(),
    )

but resulting file is 0 bytes.

[pathmapper]

Looks like the driver short name is used for ogr_provider, you could try:

ogr_provider='DXF'

https://gdal.org/drivers/vector/dxf.html

[gioman]

Looks like the driver short name is used for ogr_provider, you could try:

nope, still 0 bytes.

[gioman]

@Gustry On the other had this works

https://YOURLIZMAPDEMOSERVER/lizmap/www/index.php/lizmap/service?repository=qgisserverdemos&project=montpellier&SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&LAYERS=Quartiers&STYLES=&CRS=EPSG%3A2154&BBOX=765124,6274515,776072,6284267&WIDTH=1042&HEIGHT=811&FORMAT_OPTIONS=MODE:SYMBOLLAYERSYMBOLOGY;SCALE:500;NO_MTEXT:TEXT&FILE_NAME=quartiers.dxf&FORMAT=application/dxf

[Gustry]

Thanks for checking, indeed, it's in the documentation :

https://docs.qgis.org/3.28/en/docs/server_manual/services/wms.html#wms-getmap-format

So WMS GetCapabilities in WMS is missing the DXF format if the layer is also in WFS ?

[gioman]

So WMS GetCapabilities in WMS is missing the DXF format if the layer is also in WFS ?

DXF is part of the WMS capabilities regardless if a layer is published as WFS (as far as I understand)

[gioman]

DXF is part of the WMS capabilities regardless if a layer is published as WFS (as far as I understand)

no you are right, only when the layer is published as WFS.

[huggla]

The dxf-export in Qgis (in server through wms-request) does not save feature attributes.

[gioman]

The dxf-export in Qgis (in server through wms-request) does not save feature attributes.

@huggla sure you did the request correctly? This with the demo project (Montpellier) worked for me

https://github.com/3liz/qgis-wfsOutputExtension/issues/27#issuecomment-1784803518

[huggla]

The dxf-export in Qgis (in server through wms-request) does not save feature attributes.

@huggla sure you did the request correctly? This with the demo project (Montpellier) worked for me

#27 (comment)

Normal WMS request: https://kartor.kristianstad.se/qgisserver-shared/ows/planer?with_geometry=true&fi_point_tolerance=20&REQUEST=GetMap&SERVICE=WMS&VERSION=1.1.1&FORMAT=image/png&LAYERS=v_planer_lk&WIDTH=512&HEIGHT=512&SRS=EPSG:3008&BBOX=191093.75999999995%2C6211571.84%2C191237.11999999994%2C6211715.2 Feature attributes: https://kartor.kristianstad.se/qgisserver-shared/ows/planer?REQUEST=GetFeatureInfo&QUERY_LAYERS=v_planer_lk&SERVICE=WMS&VERSION=1.1.1&INFO_FORMAT=application/json&X=266&Y=229&WIDTH=512&HEIGHT=512&SRS=EPSG:3008&BBOX=191093.75999999995%2C6211571.84%2C191237.11999999994%2C6211715.2 DXF export (feature attributes missing): https://kartor.kristianstad.se/qgisserver-shared/ows/planer?REQUEST=GetMap&SERVICE=WMS&VERSION=1.1.1&LAYERS=v_planer_lk&WIDTH=512&HEIGHT=512&SRS=EPSG:3008&BBOX=191093.75999999995%2C6211571.84%2C191237.11999999994%2C6211715.2&FORMAT_OPTIONS=MODE:SYMBOLLAYERSYMBOLOGY;SCALE:500;NO_MTEXT:TEXT&FILE_NAME=planer.dxf&FORMAT=application/dxf Geojson export (with feature attributes): https://kartor.kristianstad.se/qgisserver-shared/ows/planer?REQUEST=GetFeature&TYPENAME=v_planer_lk&SERVICE=WFS&VERSION=1.0.0&OUTPUTFORMAT=geojson&WIDTH=512&HEIGHT=512&SRSNAME=EPSG:3008&BBOX=191093.75999999995%2C6211571.84%2C191237.11999999994%2C6211715.2

[aeduard]

I've tried the setup in definitions.py (version 1.8.0), also layer is published in QGIS Server WFS capabilities. The resulting dxf has 0 bytes. Any hints?

[gioman]

Any hints?

@aeduard it won't work, as far as I understand, because the DXF is part of QGIS WMS capabilities, not WFS.