[Qgis-user] XYZ tiles in CRS other than web Mercator

[Árni Geirsson]

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 at lists.osgeo.org> wrote:

> Patrick Dunford via QGIS-User <qgis-user at 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.
>
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