Jonathan – Thanks for your input, you were correct it was Leaflet (well my incorrect use of it!).
For anyone else struggling;
When I’d defined the CRS (EPSG:27700) using Proj4Leaflet, I defined the projection and resolutions but didn’t define the origin (it wasn’t in the example I was following), therefore tiles were right resolution but wrong co-ords, so WMS was working but anything Tiled wasn’t.
Working JavaScript for reference is:
var crs = new L**.Proj.CRS(** ‘EPSG:27700’,
‘+proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 +x_0=400000 +y_0=-100000’ +
‘+ellps=airy +datum=OSGB36 +units=m +no_defs’,
{
origin**:** [350000, 380000**],**
resolutions**:** [
5600**,** 2800**,** 1400**,** 700**,** 350**,** 175**,** 84**,** 42**,** 21**,** 11.2**,** 5.6**,** 2.8**,** 1.4**,** 0.7**,** 0.35**,** 0.14**,** 0.07
]
}
);
Where the origin values are the ‘Min X’ and ‘Min Y’ from the Geoserver Gridset (changed from my initial email).
Rob
From: Jonathan Moules [mailto:jonathanmoules@anonymised.com]
Sent: 13 November 2013 17:14
To: Langford, Robert
Cc: geoserver-users@lists.sourceforge.net
Subject: [Maybe Spam]Re: [Geoserver-users] GeoWebCache into Leaflet.js
Hi Robert,
Comparing that to my own gridset, it’s pretty much identical. The only two differences are:
You have an extra zoom-out level (1:20million?), and your bounding box has probably been automatically generated.
Mine is here:
UK_OSGB
27700
0.0
0.0
700000.0
1300000.0
false
2800.0
1400.0
700.0
350.0
175.0
84.0
42.0
21.0
11.2
5.6
2.8
1.4
0.7
0.35
0.14
0.07
1.0
2.8E-4
UK_OSGB:0
UK_OSGB:1
UK_OSGB:2
UK_OSGB:3
UK_OSGB:4
UK_OSGB:5
UK_OSGB:6
UK_OSGB:7
UK_OSGB:8
UK_OSGB:9
UK_OSGB:10
UK_OSGB:11
UK_OSGB:12
UK_OSGB:13
UK_OSGB:14
UK_OSGB:15
256
256
false
So there’s probably nothing wrong with your gridset (mine works fine at least).
It certainly appears from your error that your application is using a different gridset (mine was doing similar things when they weren’t identical).
My javaScript declaration (not leaflet):
resolutions: [2800,1400,700,350,175,84,42,21,11.2,5.6,2.8,1.4,0.7,0.35,0.14,0.07],
Maybe leaflet is doing something it shouldn’t be?
Regards,
Jonathan
Jonathan Moules
GIS Analyst Programmer,
Corporate GIS,
Warwickshire County Council
Tel: +44 (0)1926 412588, (Internal: 2588)
On 8 November 2013 15:20, Langford, Robert <Robert.Langford@anonymised.com> wrote:
All,
I’m having problems with GeoWebCache, I have a Leaflet.js web mapping site using Proj4Leaflet which consumes 2 WMS feeds from Geoserver (2.3.3), both are Layer Groups (one base mapping the other is data) and everything displays fine when I’m not using GWC.
When I enable caching on the base mapping Layer Group I get two different results at different zoom levels:
-
At zoom levels 5, 6, 8 & 9: I get “geowebcache-cache-result: HIT”. However the images are misaligned/offset to the non-cached layers
-
At zoom levels 7, 10, 11, 12, 13 & 14: I get “geowebcache-cache-result: MISS” and “geowebcache-miss-reason: request does not align to grid(s) ‘Ordnance_Survey_National_Grid’”. Because the cache isn’t used the layers align correctly
I have created a custom Gridset for this and it is British National Grid, EPSG:27700 (full specification at the foot of the email).
I’m really confused as the resolutions that I’ve defined in my web app exactly match the Gridset below and I can’t work out if I’ve got a problem with the Gridset or something in the Leaflet code.
If anyone could shed any light on this matter or point me in the right direction to troubleshoot it I’d greatly appreciate it. Please let me know if any further information is required.
Kind regards,
Rob
Ordnance_Survey_National_Grid
27700
1346.748175220855
7097.996956234318
671066.5126380573
1230202.1293903186
false
5600.0
2800.0
1400.0
700.0
350.0
175.0
84.0
42.0
21.0
11.2
5.6
2.8
1.4
0.7
0.35
0.14
0.07
1.0
2.8E-4
Ordnance Survey National Grid:0
Ordnance Survey National Grid:1
Ordnance Survey National Grid:2
Ordnance Survey National Grid:3
Ordnance Survey National Grid:4
Ordnance Survey National Grid:5
Ordnance Survey National Grid:6
Ordnance Survey National Grid:7
Ordnance Survey National Grid:8
Ordnance Survey National Grid:9
Ordnance Survey National Grid:10
Ordnance Survey National Grid:11
Ordnance Survey National Grid:12
Ordnance Survey National Grid:13
Ordnance Survey National Grid:14
Ordnance Survey National Grid:15
Ordnance Survey National Grid:16
256
256
false
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