[mapserver-users] WMTS tiles not at correct Latitude (and moving)

[thomas bonfort]

Have a look at this thread if this is happening on a custom grid (i.e.
notre google-mercator or wgs84):
http://lists.osgeo.org/pipermail/mapserver-users/2014-October/077033.html
On Mar 5, 2015 6:54 AM, "Ben Madin" <ben at ausvet.com.au> wrote:

> G’day all,
>
> we have set up a map cache wmts layer to produce boundaries for our
> mapping system.
>
> In isolation, it was looking OK, however when we layer the boundaries with
> any known background (OSM etc) they appear to be offset by a few degrees S
> (it is all in EPSG:3857)
>
> To confuse things more, as we zoom in a couple of layers, this seems to be
> moving north (which is good), but not enough to converge with our
> background or data layers - so still bad.
>
> I’ve put an image to illustrate this at :
>
>
> https://s3-ap-southeast-2.amazonaws.com/uploads.ausvet.com.au/Misaligned-WMTS.png
>
> My guess is I have done something wrong at some level of configuration
> (postgis data, mapfile, wms config, mapcache.xml or OpenLayers),  but it
> might be that it is common enough that most people can figure it out (which
> is why I couldn’t find a good reason!)
>
> Any advice would be gratefully accepted. I can put up further details as
> required (or if it isn’t as simple as I thought)
>
> cheers
>
> Ben
>
>
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