[GRASS-user] Questions about datum management

[Corrado]

Dear friends,

a few questions on some things I do not understand well about datum:

1) what is a datum tranformation parameter?
2) why there are 2 datum transformation paramenters for osgb36?
3) why does the system ask for a datum transformation parameter when I create 
a location with EPSG code 27700? The code should be enough to create 
everything!

Regards
-- 
Corrado Topi

Global Climate Change & Biodiversity Indicators
Area 18,Department of Biology
University of York, York, YO10 5YW, UK
Phone: + 44 (0) 1904 328645, E-mail: ct529 at york.ac.uk