2010/3/4 Jody Garnett <[email protected]> > We should keep this on the email list ... > > On Mon, Feb 22, 2010 at 6:45 AM, Frank Gasdorf > <[email protected]> wrote: > >> uDig tries to pay careful attention to what GeoWebCache says it is doing > >> with respect to coordinate reference system. If both the map display and > the > >> geowebcache are in 4326 then no scaling should occur. > > > > I used a simple countries shapefile, added it (EPSG:4326) as an datastore > to > > a geoserver workspace. Works fine ;) On client side the map is configured > to > > use EPSG:4326 ether. > > I do not have a geowebcache at the moment; does not one come with a > geoserver install these days? > > Right, the geowebcache is included but I don't know, whether the layers have to be seeded. Hopefully not, it requires a lot of processing time if they where pre-calculated.
To confirm the code is still working I used this WMS-C service: > - > http://labs.metacarta.com/wms-c/tilecache.py?SERVICE=WMS&VERSION=1.1.1&REQUEST=GetCapabilities&tiled=true > > (from the data wiki page). > >> > >> Please note that uDig *will* allow you to choose any zoom at all; so the > >> closest set of tiles will be featch and stretched onto the screen. If > the > >> CRS is the same this should just amount to a change of scale; and not a > >> stretch or sheer. > > > > Is there an additional UI tool to select only provided scales? Are the > scale > > levels for all cached services equal? I didn't read the standard to > now... > > > The scale levels are shown at the bottom of the screen; you can click > to pull up a list of the common scales. The list is taken from the > current layer if available. > > Thanks for this advise. I checked the metacharta service and it works quite well. (as WMS-C Layer). It seems to me the geowebcache does not work correctly, I guess I should ask some body from geoserver team if they have same behavior. Second I will give tilecache a try to go forward and get my data served well using tiles. Frank >> uDig is willing to request tiles and actually reproject (well resample) > >> them onto the screen as well. > >> Would you like to open a bug report (say in uDig to start with) and > >> include some screen snapshots so we can get discussion going? > > > > I'm going to create an issue within the next week. I thought the client > > would resize the requested tiles if to fit into the defined scale. It > would > > also be great to have a scale-slider wich represents well defined scale > > levels be the WMSC standard if there any exists. > > Frank > > Jody >
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