Hi all, - apologies for accidental duplication
I am just setting up a server (with the help of a sys admin) to use
GeoServer/GWC and also MapServer.
I was planning on using TileCache with MapServer but was running into
problem so decided to cache it via GeoWebCache instead.
The Mapserver layer in question is a simple world map in EPSG:3857. It
serves directly from MapServer to Leaflet or OpenLayers without any apparent
problems (at this stage)
However, when I set up the layer in GeoServer, something happens that
affects the bounds. At low zooms it looks normal, but as I zoom in, the
portion of the map that can be viewed gets smaller and smaller (toward 0,0 I
guess).
I figure it is some type of tiling problem, and of course the same problem
is apparent when previewing the layer in GWC.
There are no tile loading errors, so it appears that requests are valid.
The layer settings in Mapserver are:
LAYER
NAME "postgres_worldmap_3857"
METADATA
"wms_title"
"worldmap"
"wms_srs"
"EPSG:3857"
END
PROJECTION
"init=epsg:3857"
END
TYPE POLYGON
CONNECTIONTYPE POSTGIS
EXTENT -20037507 -30240971
20037507 18365151
CONNECTION "host=xxx.xxx.xxx.xxx port=5432
dbname=postgres user=postgres password=XXXXXXX"
DATA "the_geom from
tbl_simple_world_border_3857"
CLASS
STYLE
OUTLINECOLOR
255 0 0
COLOR 0 0
255
ANTIALIAS
TRUE
END
END
END
And the geoserver layer is set up as;
Native srs and Declared Srs as EPSG:3857 (Keep Native)
BB -20,037,507 -30,240,971 20,037,507 18,365,151
LatLng BB -180 -90 180 90
In fact, I realise now, watching the Apache logs that the following
Geoserver request isn't even being passed to mapserver :
/geoserver/mapserver_layers/wms?LAYERS=mapserver_layers%3Apostgres_worldmap_
3857&STYLES=&FORMAT=image%2Fpng&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&SRS
=EPSG%3A3857&BBOX=-3143565.5136731,1300794.6923825,1864194.1259754,7376559.9
423825&WIDTH=422&HEIGHT=512
But this one is:
/geoserver/mapserver_layers/wms?LAYERS=mapserver_layers%3Apostgres_worldmap_
3857&STYLES=&FORMAT=image%2Fpng&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&SRS
=EPSG%3A3857&BBOX=-4021703.4599621,-1404819.5205081,986056.17968631,4670945.
7294919&WIDTH=422&HEIGHT=512
as:
/sample_map_script.cgi?SERVICE=WMS&LAYERS=postgres_worldmap_3857&CRS=EPSG:38
57&FORMAT=image%2Fpng&TRANSPARENT=FALSE&HEIGHT=512&BGCOLOR=0xFFFFFF&REQUEST=
GetMap&BBOX=-4021703.4599621,-1404819.5205081,986056.17968631,4670945.729491
9&WIDTH=422&STYLES=&VERSION=1.3.0
If anyone knows what I am doing wrong here, or if the problem sounds
familiar, please help my tired eyes to spot it!
Thanks and goodnight!
Neil
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