[OpenLayers-Users] maxExtent has no properties

[Stephen Woodbridge]

Tom wrote:
> Hi all,
> 
> I'm currently trying to get the co-ordinates of the origin of the map in 
> order to utilise the geoserver meta tiler extension to WMS see: 
> http://docs.codehaus.org/display/GEOSDOC/WMS+vendor+parameters  These 
> co-ordinates must be included in the WMS URL so I'm doing the following:

I ran into this error the other night and found that I had forgotten to set:

map.addOptions({isBaseLayer: true});

which seemed to solve the problem.

-Steve W.

> ...
> var map;
> function init()
> {
> var options = 
> {resolutions:[72,36,18,9.6,4.8,2.4,1.2,0.6,0.3,0.15,0.125],maxExtent:new 
> OpenLayers.Bounds(0,0,2000000,2000000),maxResolution:'auto',units:'meters',projection:'EPSG:27700',controls:[]};
> map = new OpenLayers.Map( $('map'), options );
> map.setCenter(new OpenLayers.LonLat(543443,255213), 7);
> var olextent = map.getExtent();
> var origincoords=toString(olextent.bottom) + ',' + toString(olextent.left);
> ...
> 
> and I'm getting the following error:
> 
> maxExtent has no properties
> isValidLonLat(lon=543443,lat=255213 lon=543443 lat=255213 CLASS_NAME= 
> OpenLayers.LonLat)Map.js (line 933)
> setCenter( lon=543443,lat=255213 lon=543443 lat=255213 
> CLASS_NAME=OpenLayers.LonLat , 7, undefined, undefined)Map.js (line 804)
> init() classexample.php (line 11)
> onload(load ) classexample.php (line 1)
> valid = maxExtent.containsLonLat(lonlat);
> 
> Any ideas?
> 
> cheers,
> 
> Tom
> 
> 
> 
> 
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