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Mahmut ARIKAN created an issue |
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Geoserver EPSG:23XX projections not covering ED50 / TM30 region |
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Issue Type: |
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Affects Versions: |
2.18.1 |
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Assignee: |
Unassigned |
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Attachments: |
geoserver_epsg2320_ toWGS84_differs.png |
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Created: |
24/Dec/20 11:05 PM |
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Environment: |
Displaying an EPSG:2320 projection WMS layer from Geoserver on Openlayers. |
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Priority: |
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Reporter: |
Medium|
Hi, Short version: TOWGS84 parameter for EPSG:23xx in Geoserver 2.x.x points to Svalbard/Norway region rather than Istanbul/Turkey. This misleads OpenLayers user because the written text and map display does not match. On the other hand, this is not noticed when using QGIS3 since it asks users to define towgs84 parameters before displaying a map. Please see the attached screenshot. access link: http://localhost:8080/geoserver/web/wicket/bookmarkable/org.geoserver.web.demo.SRSDescriptionPage?3&code=EPSG:2320 Details:
TOWGS84[-116.641,-56.931,-110.559,0.893,0.921,-0.917,-3.52]
TOWGS84[-84.1,-101.8,-129.7,0,0,0.468,1.05] This datum parameter (towgs84) conflict affects Openlayers. It won’t allow you to get the WMS layer displayed on top of the OSM basemap. Since, definition name EPSG:2320 are the same but datum parameter are different. Test: My solution was to override Geoserver EPSG:2320 definition creating an epsg_overrides.properties file with 2320-1784 under user_projections. Best, Mahmut |
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