Hi, WMS-C works only if the BBOX of the GetMap request hits (almost) exactly the tile boundaries of the corresponding gridset. I took on example GetMap from the States layer GWC preview. This is a valid request for EPSG:4326 gridset
http://localhost:8080/geoserver/gwc/service/wms?LAYERS=topp%3Astates&FORMAT=image%2Fpng&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&SRS=EPSG%3A4326&BBOX=-112.5,33.75,-101.25,45&WIDTH=256&HEIGHT=256 Analyze the bbox BBOX=-112.5,33.75,-101.25,45 a bit width= -101.25-(-112.5)=11,25 degrees height=45-33.75=11.25 degrees Thus the tile is square with resolution (11.25/256)= 0.0439453125 degrees/pixel. Compare it with the setting page for gridset EPSG:4326 and you'll see that it is the resolution of zoom level 4. Now to the request that you pasted. It has a bounding box bbox:11.25,54.16243396806781,14.0625,55.7765730186677 width= 14.0625-11,25=2.8125 degrees height=55.7765730186677-54.16243396806781=1.61413905059989 degrees Different resolutions alone proof that this GetMap request can't hit exactly any tile in the EPSG:4326 gridsets. The error message tries to tell that: " geowebcache-miss-reason:request does not align to grid(s) 'EPSG:4326'" The reason for the error is that the client does not create valid WMS-C requests. Which client are you using? -Jukka Rahkonen- -----Alkuperäinen viesti----- Lähettäjä: Volkan Gümüs [mailto:[email protected]] Lähetetty: 6. huhtikuuta 2016 23:53 Vastaanottaja: [email protected] Aihe: [Geoserver-users] Tile Errors | Tile Caching Errors EPSG:4326 Hey all! Whenever I use tile caching (inbuild) with EPSG:4326 layers, I get weird results. see this picture: https://paste.xinu.at/OXTrLL/ As soon as I disable tile caching OR change to EPSG:900913, it's working like a charm. I get a miss-reason for the broken tiles: geowebcache-miss-reason:request does not align to grid(s) 'EPSG:4326' '4326:512Grid' Request params: service:WMS request:GetMap layers:X:XXX format:image/jpeg transparent:false version:1.1.0 tiled:true height:256 width:256 srs:EPSG:4326 bbox:11.25,54.16243396806781,14.0625,55.7765730186677 256x256 EPSG:4326 Grid is enabled and works fine for non-broken tiles. Any ideas?! :) ------------------------------------------------------------------------------ _______________________________________________ Geoserver-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-users ------------------------------------------------------------------------------ _______________________________________________ Geoserver-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-users
