I don't have a TMS z/y/x data set to play with but I do have a vector
tile {z}/{x}/{y}.pbf data set that's not in epsg:3857 which I had some
limited success with when I set both the layer and the project coord system
to that of the tile source. By "limited success" I mean that it was in the
right place, however the zoom levels are not correct. The OpenLayers
configurations that consume these tiles have custom min/max resolutions
defined, not web mercator zoom levels. And I don't see how to accomplish
that in QGIS.On Wed, Apr 23, 2025 at 1:37 PM Árni Geirsson <a...@alta.is> wrote: > I am referring to TMS, stored in a directory structure (/z/y/x) on a > simple web server, not WMTS where a capabilities response is available. > Tile sets are sometimes generated for specific projections for use in web > maps that are presented in that projection, such as a national CRS. I > assume this is why Openlayers allows map views to be defined in any > projection and tile layers included in that same projection to minimize the > need for reprojection on the fly. > I am not sure I can disclose the URL of the tile set I am considering, but > the url looks just like a regular XYZ url designed for web mercator, it is > just the X, Y and Z values that are very different in the given projection. > So the basic question is: Can I use such tile sets in QGIS just as I would > be able to use them in Openlayers? > > Arni > > > > > On Wed, 23 Apr 2025 at 19:26, Greg Troxel via QGIS-User < > qgis-user@lists.osgeo.org> wrote: > >> Patrick Dunford via QGIS-User <qgis-user@lists.osgeo.org> writes: >> >> > I honestly don't know that you have any option to use other than >> > EPSG3857 for webtiles. It's practically baked into the webtile >> > specifications. >> >> I am not sure if the OP is talking about TMS or WMTS: >> >> https://www.ogc.org/standards/wmts/ >> >> With the phrase XYZ tiles, I suspect TMS: >> >> https://en.wikipedia.org/wiki/Tile_Map_Service >> >> As I understand it, TMS is 3857, and WMTS can carry a CRS. >> >> _______________________________________________ >> QGIS-User mailing list >> QGIS-User@lists.osgeo.org >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >> > -- Richard W. Greenwood www.greenwoodmap.com
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