Thanks Tim, I've added this bug as a ticket ( http://trac.openlayers.org/ticket/899 )
In the meantime, if anyone else encounters this problem, they can add a line (to their kamap tile.php file) to check if the image path exists before opening it and return a single pixel image if an invalid path is supplied. This at least avoids displaying pink broken tiles. Thanks again, Ben Tim Schaub wrote: > Hey Ben- > > Ben Brehmer wrote: > >> Hello All, >> >> I am in the process of converting a kamap application to use OpenLayers >> and in doing so have run into an occasional tile loading problem. >> >> > > I've seen the problem you describe as well. Can you make a ticket for > this in Trac? > > http://trac.openlayers.org/wiki/FilingTickets > > You can set me as the owner if you like. It will likely not get > addressed before the 2.5 release - but I'll remember to look at it if > you put my name on it. > > Alternatively, if anybody else uses the ka-Map layer, any help is > appreciated in supporting it. > > Tim > > >> If you have a look at the attached screen shot you will see one valid >> tile (highlighted with firebug) and several broken (pink tiles). >> The broken tiles are offset in the X and Y direction and are broken >> because they are referencing an invalid path in the kamap generated cache. >> >> Some other observations: >> -All the broken tiles are always in the same row OR column >> -The broken tiles always load after every single tile in the viewport >> has loaded successfully. (ie. an extra row/column is loaded with broken >> tiles) >> -This is unrelated to the OpenLayers.IMAGE_RELOAD_ATTEMPTS setting since >> the tiles are broken due to a incorrect image path (not that they are >> failing to load on the first attempt) >> >> Any tips or possible leads would be greatly appreciated. I guess my main >> question is why would OpenLayers be trying to load extra columns/rows >> after all the columns/rows have already successfully loaded? >> >> Also, >> >> Thanks, >> >> Ben >> >> ----------------------- >> My map and layer setup: >> -------------------------- >> var options = { >> scales: [30000000, 15000000, 7500000, 4000000, 2000000, 750000, >> 400000, 200000, 125000, 75000, 35000, 17500, 12000, 7500], >> maxResolution: "auto", >> minResolution: "auto", >> units: 'm', >> maxExtent: MAX_EXTENTS, >> controls: [mouseEvents] >> }; >> >> map = new OpenLayers.Map('ol_map', options); >> >> layer_base = new OpenLayers.Layer.KaMap("Land", >> >> "http://brock.simplymap.com/kamap/tile.php";, >> {g: >> "__base__", map: "basemap.map", layers: "def", transparent: 'true', >> mapid: '0'}, >> {tileSize: >> new OpenLayers.Size(200,200), srs:'epsg:99999', format: "image/gif", >> Opacity: 0.3, isBaseLayer: true}); >> >> >> >> !DSPAM:4033,46b71974171633327367457! >> >> ------------------------------------------------------------------------ >> >> >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> Users mailing list >> [email protected] >> http://openlayers.org/mailman/listinfo/users >> >> >> !DSPAM:4033,46b71974171633327367457! >> > > _______________________________________________ > Users mailing list > [email protected] > http://openlayers.org/mailman/listinfo/users > _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
