Ok - here's a better demonstration of this problem. Copy this into an html file...open it in a browser, then zoom in. You'll see what I'm talking about. This is using the World Map and Places layers from one of the ka-map demos hosted by omniverdi.org. Is it something I'm doing wrong with the OL code, or maybe a bug in OL's kamap layer object?
Regards, Mike ======================================================================= <html> <head> <title>OpenLayers Example</title> <script src="http://www.openlayers.org/api/OpenLayers.js";></script> </head> <body> <div style="width:100%; height:100%" id="map"></div> <script defer="defer" type="text/javascript"> var options = { maxExtent: new OpenLayers.Bounds(-180,-90,180,90), scales: [100000000,50000000,25000000,10000000,5000000,2500000,1000000], numZoomLevels: 8, tileSize: new OpenLayers.Size(200,200), projection: "EPSG:4326", units: "dd" }; var map = new OpenLayers.Map('map',options); var ly1 = new OpenLayers.Layer.KaMap("World Map", "http://clima.ominiverdi.org/ka-map/htdocs/tile.php";, {i:"JPEG",map:"cvs",g:"World Map",version:"6"} ); var ly2 = new OpenLayers.Layer.KaMap("Places", "http://clima.ominiverdi.org/ka-map/htdocs/tile.php";, {i:"PNG",map:"cvs",g:"Places",version:"6"} ); map.addLayers([ly1,ly2]); map.zoomToExtent(new OpenLayers.Bounds(-180,-90,180,90)); ly2.setVisibility(true); </script> </body> </html> Mike Leahy wrote: > Hello list, > > I've been working on an application that uses Ka-Map, but I think > I > might consider adopting OpenLayers for the client-side part. I > have > been able to setup a map that loads two layers (see sample HTML > below). > When the map initially starts, I call roads.setVisibility(true);, > and > I see the roads layer overlaid on top of the aerial photography > layer. > It looks fine at that point...panning works fine. Once I zoom > in or > out, however, the base layer (the photography) does what is > expected, > but the roads layer just defaults to its original extent, and > remains at > the initial zoom level. Is there something I need to do to tie > the > roads layer to the zoom event? > > If this is a known issue, or if I'm just missing something, > maybe > someone can point me in the right direction. I'm using > OpenLayers 2.6 > (should I try SVN?). The tile.php script is something that I > have > integrated into my application on the server - it's generally > based on > the one from kamap (checked out of svn about a month ago), but > I don't > think it's the source of this issue (i.e., if I make the roads > layer the > base layer on its own, it works fine). > > Thanks in advance for any help, > Mike > > ====================================================================== > > <html> > <head> > <title>OpenLayers Example</title> > <script > src="https://localhost/application/js/lib/OpenLayers.js";></script> > </head> > <body> > <div style="width:100%; height:100%" id="map"></div> > <script defer="defer" type="text/javascript"> > var options = { > maxExtent: new > OpenLayers.Bounds(1327479,4883397,1415461,5034462), > scales: > [200000,150000,100000,75000,50000,25000,10000,5000], > numZoomLevels: 8, > tileSize: new OpenLayers.Size(400,300), > projection: "EPSG:4326", > units: "m" > }; > var map = new OpenLayers.Map('map',options); > var aerials = new OpenLayers.Layer.KaMap("mymap", > "https://localhost/application/tile.php";, > {layers:"0",i:"AGG_JPEG",map:"mymap",g:"Aerial > Photography",sid:"somesessionid"} > ); > var roads = new OpenLayers.Layer.KaMap("mymap", > "https://localhost/application/tile.php";, > > {layers:"160",i:"alpha",map:"mymap",g:"Roads",sid:"somesessionid"}, > {numZoomLevels:8,scales: > [200000,150000,100000,75000,50000,25000,10000,5000]} > ); > map.addLayers([aerials,roads]); > map.zoomToExtent(new > OpenLayers.Bounds(1373558,4988812,1404038,5011460)); > roads.setVisibility(true); > </script> > </body> > </html> > _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
