This shouldn't be the case, there are tests in the main API code to test projections of the map against layers to avoid this. I suspect it's projection related though...
Steve >>> On 9/19/2008 at 11:19 AM, in message <[EMAIL PROTECTED]>, Guillaume Sueur <[EMAIL PROTECTED]> wrote: > I guess that wms makes a reprojection job as the request comes with an > EPSG code and the map projection is set by a proj string. Even if they > are equivalent, can MapServer know that and forget about reprojection ? > > The cgi is rather straight forward as no EPSG is required. As the layers > don't have PROJECTION blocks, they are drawn straight forward. > > my 2 cents. > > Guillaume > > Christopher Schmidt a écrit : >> On Fri, Sep 19, 2008 at 03:34:42PM +0100, John Westwood wrote: >>> Hi Everybody, >>> >>> I am attaching a cut down version of my html, javascript and map files. On > our server the EmbeddedMap.js lives in the OpenLayers directory and is used > by gbhgis_openlayers.html. >>> >>> The test address http://148.197.8.119/gbhgis_openlayers.html . This is just > a test server so please don't tell the whole World about it! :) >>> >>> There are four layers, 2 x raster (europe 1940s, WMS and MapServer) and 2 x > vector / raster (Digital Chart of the World, WMS and MapServer) . >> >> Okay, so to cut OpenLayers out of the loop: >> >> > http://148.197.8.119/cgi-bin/mapserv?map=/data/map-files/gbhgis.map&service=WMS&L > AYERS=europe&FORMAT=image%2Fpng&VERSION=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=ap > plication%2Fvnd.ogc.se_inimage&SRS=epsg%3A3034&BBOX=2097152,2097152,4194304,419 > 4304&WIDTH=256&HEIGHT=256 >> >> > http://148.197.8.119/cgi-bin/mapserv?map=/data/map-files/gbhgis.map&layers=europ > e&format=image%2Fpng&mode=map&map_imagetype=png&mapext=2097152+2097152+4194304+41 > 94304&imgext=2097152+2097152+4194304+4194304&map_size=256+256&imgx=128&imgy=128&im > gxy=256+256 >> >> The former is WMS, the latter is not-WMS. >> >> There is a very obvious speed difference between the two. >> >> The reason the MapServer image has its colors wrong, for the record, is >> because it is using 8bit pngs instead of 24 bit pngs. My first >> impression was that was the reason for the difference, but >> unfortunately, 8bit gifs don't seem to fare any better. >> >> Time for the URLs: >> >> MapServer: real 0m0.660s >> WMS: real 0m2.707s >> >> These may help someone who knows MapServer investigate more. >> >> Regards, > _______________________________________________ > mapserver-users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/mapserver-users _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
