Thanks for the help but I think I'm misunderstanding mapcache at a more basic level.
What is the mapcachealias? In the apache httpd.conf file (using the latest MS4W), there is MapCacheAlias /mapcache "C:/ms4w/apps/mapcache/mapcache.xml" How does that relate to my own mapservices? What changes do I need to make to have them cached? My mapservices typically look like http://servername/myservice?LAYERS=layer1,layer2,...&REQUEST=GetMap&SERVICE=WMS&;.. .. Something else that seems strange is when looking at the demo ( http://servername/mapcache/dem/wms), it makes available additional layers based on entries in the current mapcache.xml file. When I try to select my own service through the demo interface, I see that it makes a GetMap request with LAYERS = tileset name. Does the name I define for the tileset in mapcache.xml have to be specific to my map service? or any special requirements? Thanks for your help. - John On Wed, Feb 1, 2012 at 6:56 AM, thomas bonfort <[email protected]>wrote: > On Thu, Jan 26, 2012 at 19:30, John Callahan <[email protected]> > wrote: > > I'm giving mapcache a try but with no luck. Well, some luck. The module > > loads fine and the demo (vmap0, http://127.0.0.1/mapcache/demo/wms) also > > works fine. I see the tiles being generated on disk. Great. However, > the > > problem comes in with my own data/services. A few questions may help me > > determine the problem. > > > > - in the source element, how do you define multiple layers? Comma > separated > > or separate <layers> entries? > > <layers>layer1,layer2</layers> > > > > > - in the tileset element, can you have multiple grid entries? It doesn't > > seem like it from reading the documentation but the sample tileset shows > > both the "g" and "WGS84" grids. > which doc part does not show this? > http://www.mapserver.org/trunk/mapcache/config.html#tileset > > > > > - for cache type attributes, what are the possible values? The docs show > > several possibilities (disk, sqllite, memcache) but the sample shows > > type="tiff" which is not listed on the doc page. Can other file > extensions > > be used here? > http://www.mapserver.org/trunk/mapcache/caches.html > > > > > - when I define a FORMAT with name and type, how does that get used? I > see > > that is called in the tileset but how does that relate to the image type > > under getmap/params/format? > > The format is used when recompressing individual tiles after having > cut a larger metatile. It is also used when combining multiple tiles > into a single image for a getmap request. If you want to force a > specific format to be sent to the source wms server when creating a > tile, you can add a <format>foobar</format> to your source definition > (at the same level as the <layers> parameter). Both formats don't have > to be equivalent, it is actually a good idea to request the images in > png from the source wms server even when using a jpeg format for the > the tileset, as this will avoid a double jpeg compression (once on the > wms server, once on the mapcache server) when storing an individual > tile to the caches. > > regards, > thomas > > > > > > > The doc page I am referring to is > > at http://www.mapserver.org/trunk/mapcache/config.html. I'm sure I'll > have > > other questions as I work my way through. Thanks for this awesome > addition > > to Mapserver! > > > > - John > > > > *********************************************** > > John Callahan, Research Scientist > > Delaware Geological Survey, University of Delaware > > URL: http://www.dgs.udel.edu > > ************************************************* > > > > > > _______________________________________________ > > mapserver-users mailing list > > [email protected] > > http://lists.osgeo.org/mailman/listinfo/mapserver-users > > >
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