[mapserver-users] Projection values of mapfile

[Christy Nieman]

Hello,

If you are using a recent version of PROJ.4, you should be able to use 
epsg:3857 for Web Mercator.  MapServer can reproject your data 
on-the-fly if you also have projection blocks in your layer definitions 
to say what projection the data are (i.e. epsg:4326). This will slow 
down the map draws somewhat, so if you are planning to always display 
this map in Web Mercator, it's a good idea to reproject your shapefiles.

... oh, it looks like Jeff beat me to it :)

Christy

On 11/05/2012 11:06 PM, Forest wrote:
> Hello everyone,
>      I've been using shp2img tools to generate tile image by mapfile. 
> And the project is by default,which is epsg:4326.Now I want to use Web 
> Mercator Projection,Can you tell me how to write the mapfile's 
> projection label?And Do I need to change my shpfile's projection?
>     Waiting for your answers,thanks very much!
>
>
>
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