Hi,

I do not know Leaflet and if and how it supports WMS-C specification. Perhaps 
it does not and it would be better to use WMTS which is probably used through 
https://github.com/mylen/leaflet.TileLayer.WMTS. By reading 
http://leafletjs.com/ Leaflet does not seem to have mailing list or forum but 
they have outsourced the support to gis.stackexchange. I wish you good luck 
there.

-Jukka-

Volkan Gümüs wrote:

Hello!

Thanks for you detailed answer!

I'm using leaflet.



Am 07.04.2016 um 00:02 schrieb Rahkonen Jukka (MML):
> 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&F
> ORMAT=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?! :)
>
>
> ----------------------------------------------------------------------
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--
Beste Grüße

Volkan Gümüs
F1-Computer.de
Tel: 0231 223 985 60
Fax: 0231 330 295 08
Mail: [email protected]


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