[udig-users] Overriding existing CRS

["Peter Mozolík (Gmail)" <petermozolik@xxxxxxxxx>]

Hello,

I'm new to uDig. I have few questions.

1. Is it possible to override internal definition of existing CRS (e.g I 
want to modify TOWGS parameter). I have found file "epsg.properties" in 
directory <UDIG>/plugins/net.refractions.udig.libs_<version>. I guess 
its purpose is to add new CRS into uDig, but I'm not sure about uDig 
behaviour if I use same code (and eventually name) as already defined CRS.

2. Could you please exaplain how internal db of CRS definitions is 
built, I mean if there is some automatic process to build internal db 
from official epsg registry. How often is internal database of CRS updated?

3. Does uDig support  ESRI specific map projection parameters 'X_SCALE', 
'Y_SCALE', 'XY_PLANE_ROTATION' used in some projections e.g. Krovak.


Thanks