WMT-S doesn't draw an image if zoomed in beyond maximum tilematrix #16964
Labels
Bug
Either a bug report, or a bug fix. Let's hope for the latter!
Data Provider
Related to specific vector, raster or mesh data providers
Milestone
Author Name: Jeremy Palmer (@palmerj)
Original Redmine Issue: 8134
Affected QGIS version: master
Redmine category:web_services_clients/wms
Assignee: Jürgen Fischer
We are developing a new WMTS service and have found QGIS tries to request tiles for levels lower than supported in the GC TileMatrix. I have tested this in ArcMap(!) 10.1 and it works by resampling the lowest provided tiles as you zoom in.
With one of our EPSG:3857 tilesets one we zoom in beyond a scale of 1:1690 and nothing displays on the map canvas. This is because QGIS requests tiles that do not exists. e.g
...EPSG:3857/20/516713/328293.png - return HTTP 404 where level 19 is the highest supported.
I can provide URLs to our testing site via private email if required (once testing is finished it will be freely available on http://data.linz.govt.nz).
Here's the relevant part of the GC doc:
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