[OpenLayers-Users] combine 2 different projections map data

[Marc Jansen]

Hi Aypes2,

I think reprojecting the rendered tiles by Google is not an option for you.

As for your other questions:

If your wms-service is able to serve maps in 900913/3785, than you 
simply need to ask for that projection.

Look into the capabilities document whether the above mentioned SRS are 
offered. Check if you (in OL) requests the right projection. It should 
work that way.

Regards,

Marc


Aypes2 wrote:
>
> Marc Jansen-2 wrote:
>   
>> Hi Aypes2,
>>
>> why don't you reproject your cad files to //EPSG:3785 (EPSG:900913, that 
>> is) when you already serve them from a mapserver?
>>
>> If you experience problems doing that, the Mapserver mailinglist may help.
>>
>> Regards,
>> Marc
>>
>>     
> Hi Marc,
>
> Thanks for your reply. You mean putting "init="epsg=3785" in the Map file?
> I've done this and also modified the ms4w/proj/nad/epsg file. But it changes
> nothing. Does the projection epsg change the longitude and latitude into
> related coordinates? But my CAD files have been already stored in
> coordinates not in Lon Lat. Is there any function to transform between
> coordinates of different coordinates? I just can't find any command or
> function to make it back to Lon Lat.
>
> Actually I want to change google map rather than my own because reprojecting
> my map data make the system run slower. 
>
> Thanks,
> Aypes2
>