[OpenLayers-Users] change projection layer dynamically

[toni hernández]

Hi,

thanks for the advise.
Now at least I have two different possibilities.

The other one I was thinking about is reloading the html page with a new
parameter. This new parameter should be used to define the new projection
when setting the map. The only problem is that I have to be comparing the
coordinates with every new zoom or pan.




2009/4/25 Roald de Wit <roald.dewit at lisasoft.com>

> Hi Toni,
>
> OpenLayers cannot combine WMS layers with different projections nor can it
> easily switch projections, certainly not on the fly based on the region you
> are viewing!
> What I advise you to do is the following if you have no control over these
> WMS servers and cannot have them serve all images in one projection: have
> MapServer act as a reprojecting proxy for you. MapServer can act as a WMS
> client and reproject the imagery into the projection you want. This page
> describes how to do this: [1].
>
> If you need more assistance with setting up or configuring MapServer I
> advise you to ask their mailing list.
>
> I hope this helps.
>
> Regards, Roald
>
> [1] http://mapserver.org/ogc/wms_client.html
>
>
> toni hernández wrote:
>
>> hi,
>>
>> I have a map that gets some WMS layers from two different servers all over
>> spain.
>>
>> There is one wms server that needs a concrete epsg parameter (23029, 23030
>> or 23031) depending on the zone of spain. This server does not accept
>> epsg:4326.
>>
>> So dependig on the zone of the map that is being displaid I need to change
>> the WMS layer projection.
>> is this possible?
>>
>>
>>
>
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