[mapserver-users] MapServer 4.8.3: MapScript setProjection

[Daniel Morissette]

Rahkonen Jukka wrote:
>  >  > Excuse the stupid question, but what do you mean by native PROJ4 
> definition?  Do you mean applying the inline parameters directly?  
>    
>> He means  giving the projections with the actual strings which are also 
> hidings behind the epsg codes, 
>>  for example this means the same as epsg:2393PROJECTION "+proj=tmerc 
> +lat_0=0 +lon_0=27 +k=1.000000 
>>  +x_0=3500000 +y_0=0 +ellps=intl 
> +towgs84=-90.7,-106.1,-119.2,4.09,0.218,-1.05,1.37 +units=m +no_defs" 
>>  Projection strings are slower to write int  mapfile but for Mapserver 
> they are faster to execute because these is  
>> no need to jump to projection library file. If you have MS4W 
> installation you can find the strings to use from  
>>  D:\ms4w\proj\nad directory, most of them from file names epsg.
>  
> Excuse the stupid answer, you were asking about MapScript which I know 
> nothing about.  Basically it must be
> about the same thing, though.
>  

Your answer applies to MapScript as well. In the MapScript case you'd do:

   $map->setProjection("+proj=tmerc +lat_0=0 +lon_0=27 +k=1.000000 
+x_0=3500000 +y_0=0 +ellps=intl 
+towgs84=-90.7,-106.1,-119.2,4.09,0.218,-1.05,1.37 +units=m +no_defs"

Daniel
-- 
Daniel Morissette
http://www.mapgears.com/