Bug report #21048

Requests made for features when outside of bbox

Added by Jonathan Moules over 1 year ago. Updated over 1 year ago.

Status:Open
Priority:Normal
Assignee:-
Category:Web Services clients/WFS
Affected QGIS version:3.4.3 Regression?:No
Operating System: Easy fix?:No
Pull Request or Patch supplied:No Resolution:
Crashes QGIS or corrupts data:No Copied to github as #:28867

Description

For WMS/WMTS, it seems that if you're viewing outside of the declared Bounding Box of the layer, then QGIS doesn't make any requests to the server. This makes sense and is a good optimisation.

But for WFS, even if you're outside of the area, if you pan-around, it still makes requests for the features.

At least, that's what I'm seeing for this (which has the data for both WMS and WFS making a good test):
http://ogc.geo-ide.developpement-durable.gouv.fr/wxs?map=%2Fopt%2Fdata%2Fcarto%2Fgeoide-catalogue%2F1.4%2Forg_38102%2F2f3f11f0-91c9-479a-b748-ed1098603e91.internet.map&version=2.0.2

The WMS requests are all simply not sent when completely outside the bbox, but the WFS requests are.

History

#1 Updated by Even Rouault over 1 year ago

If I remember well, there are a number of WFS servers where the declared bounding box is incorrect, so that non-optimization can sometimes help

#2 Updated by Jonathan Moules over 1 year ago

Definitely true, but this is also true of WMS/WMTS which do appear to have this optimisation. I wonder if the behaviour should be the same between them?

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