[OpenLayers-Users] Empty Base Layer?

[Mike Purvis]

> var nobase = new OpenLayers.Layer("No Basemap",{isBaseLayer: true,
> 'displayInLayerSwitcher': true});
>

This method worked perfectly, thanks very much. I used maxExtent and
maxResolution to set my desired limits.

M.



On Mon, Jul 19, 2010 at 7:57 PM, Lennox Antoine <lxnyce at gmail.com> wrote:

> When you intialize your map, pass it a "restrictedExtent" so that it will
> only show your area of interest. See this example :
>
> http://openlayers.org/dev/examples/restricted-extent.html
>
> Also, it should be possible to use one of your vector layers as a basemap,
> rather than creating a layer that does nothing.
>
> Lennox
>
>
> On Mon, Jul 19, 2010 at 7:36 PM, Mike Purvis <mike at uwmike.com> wrote:
>
>> Well, I'm only displaying blank tiles on that layer, but there are a
>> number of items in the vector layer above—I would like to restrict the
>> viewport to the region containing these items.
>>
>> M.
>>
>>
>>
>> On Mon, Jul 19, 2010 at 6:04 PM, Lennox Antoine <lxnyce at gmail.com> wrote:
>>
>>> What effect are you referring to? Why do you care to restrict the bounds
>>> of the layer if you're just displaying blank tiles?
>>>
>>> Lennox
>>>
>>>
>>> On Mon, Jul 19, 2010 at 5:19 PM, Mike Purvis <mike at uwmike.com> wrote:
>>>
>>>> In both those cases I get global coordinates, though, don't I?
>>>>
>>>> My Image layer is like so:
>>>>
>>>>     baseLayer = new OpenLayers.Layer.Image( "Image",
>>>>     "/static/img/gridmap.png",
>>>>     new OpenLayers.Bounds(0, 0, 3, 3),
>>>>     new OpenLayers.Size(600, 600),
>>>>     {});
>>>>
>>>> It's a 600x600 image, and the coordinate system of the map scales that
>>>> from 0..3. Is there a straightforward way to get this effect with either of
>>>> the two above solutions?
>>>>
>>>> Thanks.
>>>>
>>>>
>>>>
>>>> On Mon, Jul 19, 2010 at 5:10 PM, BMcBride <bmcbride at chacompanies.com>wrote:
>>>>
>>>>>
>>>>> var nobase = new OpenLayers.Layer("No Basemap",{isBaseLayer: true,
>>>>> 'displayInLayerSwitcher': true});
>>>>>
>>>>> -----
>>>>> Bryan R. McBride, GISP
>>>>> http://www.bryanmcbride.com bryanmcbride.com
>>>>> http://geoserving.net/ geoserving.net
>>>>> --
>>>>> View this message in context:
>>>>> http://osgeo-org.1803224.n2.nabble.com/Empty-Base-Layer-tp5314013p5314066.html
>>>>> Sent from the OpenLayers Users mailing list archive at Nabble.com.
>>>>> _______________________________________________
>>>>> Users mailing list
>>>>> Users at openlayers.org
>>>>> http://openlayers.org/mailman/listinfo/users
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> http://uwmike.com
>>>>
>>>
>>>
>>
>>
>> --
>> http://uwmike.com
>>
>
>


-- 
http://uwmike.com
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