[mapserver-users] MapServer 4.8.3: MapScript setProjection

[Daniel Morissette]

Rob wrote:
> 
> I've a java app that modifies the JNI setProjection object, using 
> 'init=epsg:27700' as its argument.
> 
> This seems to take approx 200ms for every layer that I add to my request 
> (rendered or not), which can drastically increase the time taken to draw 
> a map (my standard request includes 18 layers).
> 

This long time looking up EPSG projection codes is a known issue and 
I'll try to fix it for the 5.2 release.

In the meantime, an alternative to significantly reduce the lookup time 
is to move the definitions that you use the most often (e.g. 27700 in 
this case) to the top of PROJ4's "epsg" file.

If you can afford to use a native PROJ4 definition then that will be 
even faster.

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