[Qgis-user] Maximum wfs layers in qgis?
Richard McDonnell
richard.mcdonnell at opw.ie
Tue Aug 22 02:17:42 PDT 2017
Hi,
If you also switch off the Cache for the WFS on QGIS. You can do this
when you add the Layer, just uncheck the *Cache Feature* box for the
layer you are trying to load.
Hope this helps!
Regards,
Richard.
On 21/08/2017 19:55, Dan Meerschaert wrote:
> When I look in the cache/wfsprovider folder, there's another folder
> with almost three times the layer number in other files:
> wfs_cache_XX.sqlite, -shm, and -wal.
>
> I had to track down a public wfs with a small enough sample set to be
> repeatable. This Python code gives the error in 2.18.7 and a 2.99
> nightly I grabbed for testing:
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example01","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example02","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example03","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example04","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example05","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example06","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example07","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example08","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example09","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example00","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example11","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example12","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example13","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example14","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example15","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example16","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example17","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example18","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example19","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example10","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example21","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example22","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example23","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example24","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example25","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example26","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example27","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example28","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example29","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example20","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example31","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example32","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example33","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example34","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example35","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example36","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example37","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example38","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example39","WFS")
>
> iface.addVectorLayer(' restrictToRequestBBOX=\'1\'
> srsname=\'EPSG:4326\' typename=\'sdr:nyu_2451_34490\'
> url=\'https://maps-public.geo.nyu.edu/geoserver/sdr/wfs\
> <https://maps-public.geo.nyu.edu/geoserver/sdr/wfs%5C>'
> version=\'auto\' table="" sql=',"example30","WFS")
>
>
>
>
> On Aug 21, 2017 12:55 PM, "Jorge Gustavo Rocha" <jgr at di.uminho.pt
> <mailto:jgr at di.uminho.pt>> wrote:
>
> Hi Dan,
>
> QGIS uses a local SpatiaLite database to store the features on the
> client side. The cache should be in your .qgis2/cache/wfsprovider
> folder. Can you check the contents of the folder?
>
> If your WFS is a public server, can your share the service URL and the
> layer/layers to reproduce the problem?
>
> Regards,
>
> J. Gustavo
>
> On 21-08-2017 16 <tel:21-08-2017%2016>:42, Dan Meerschaert wrote:
> > I'm working on a plugin for QGIS 2.18.7 on Windows that (as a
> part of
> > its other function) grabs many wfs layers at once.
> >
> > The problem is, after about 30-50 simultaneous connections, QGIS
> throws
> > up a "Cannot create temporary SpatiaLite cache" error in the WFS log
> > panel and doesn't load all the data.
> >
> > I'm able to repeat this by picking any given wfs layer, and
> duplicating
> > it manually using iface.addVectorLayer (...) in the python console.
> >
> > Can anyone help me out?
> >
> > Respectfully,
> > -Dan
> >
> >
> > _______________________________________________
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>
> J. Gustavo
> --
> Jorge Gustavo Rocha
> Departamento de Informática
> Universidade do Minho
> 4710-057 Braga
> Tel: +351 253604480 <tel:%2B351%20253604480>
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--
*_Richard McDonnell_*
*GIS Specialist PgD GIS AssocSCSI*
*OPW FRM Data Management*
*52 Stephens Green, Dublin 2.*
TEL: 01 6476543
OPW - Ag féachaint don am atá le teacht - Ag caomhnú ón am atá thart
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