CCL: geometric definition of major and minor groove

["sudipta sinha" <sudipta.mml#gmail.com>]

 Dear
 users,
              
 
                
 I want know the geometric definition (or algorithm) of the spaces filled by
 major and minor groove of  a DNA.  I know those base pairs by which
 major  and minor grooves are forming.  Using  this  little
 information, is it possible to solve my problem. If anybody aware about this
 problem, please let me know. It is very useful to me. I am waiting for your
 early reply.
 
Thanks in advance
Sudipta