Hi

I got a geotiff raster with a projection which is not an EPSG code, so in the mapfile I use AUTO in the layer projection. This also means I skip the extent and projection in map level in the mapfile. In one client this works fine ( this client request epsg:3857 and this looks fine to me)

But in QGIS, this does not work nor any other projections.

Then I add EXTENT and PROJECTION in my mapfile like this:
MAP
....
  EXTENT -56.6378419 31.5007307 95.025531 84.6828537
  PROJECTION
    "init=epsg:4326"
  END
....
END

And then EPSG:4326 works in QGIS also. But if I try to change the projection i qgis, eg to EPSG:3857, this does not work in QGIS, even if it still work in my other client.

So what is it that I don't understand about EXTENT and PROJECTION. I have looked at the documentation https://mapserver.org/mapfile/projection.html#important-notes and and as far as I can understand from the second bullet point the projection definition at map level can be looked as the outgoing projection with the extent accordingly.

What do I need to do to make QGIS be able to use other projections as well?

I do have a link to my getcapabilities document, but hesitates to put it here.

Trygve Aspenes
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