[Geoserver-devel] [JIRA] (GEOS-10945) Offset between WMS and WMTS after reprojection from 31466 to 3857

Carsten Lockenkötter created an issue

GeoServer / BugGEOS-10945

Offset between WMS and WMTS after reprojection from 31466 to 3857

Issue Type:

BugBug

Affects Versions:

2.21.1, 2.22.2

Assignee:

Unassigned

Attachments:

GeoServer_Workspace.zip, RasterDataExample.zip, wms_wmts_offset.png

Components:

WMS, WMTS

Created:

19/Apr/23 10:55 AM

Environment:

Windows Server 2019 Standard (1809)
Apache Tomcat/9.0.62
GeoServer 2.22.2 and 2.21.1

Priority:

MediumMedium

Reporter:

Carsten Lockenkötter

Hi,

I noticed an offset of about 20cm when serving the ImageMosaic data as WMS and WMTS.
The raster file is in EPSG:31466 on the file system.
When publishing the ImageMosaic, the native coordinate system was correctly set to EPSG:31466.
Declared SRS: EPSG:3857
SRS handling: Reproject native to declared
Everything else was left at default settings. In the “Tile Caching” tab, only the GridSet EPSG:3857 was added, which is a completely identical copy of EPSG:900913.

I have attached two zip files, one containing my complete workspace from GeoServer and another containing an example raster tile.
If I add the layer as WMS and WMTS in QGIS, the offset of about 20cm is clearly visible (see screenshot).

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