variogram using gstat

Dear sir,
Ya, Now I am comparing the results from gslib and R/gsat. The shape of 
variograms exactly overlaps but the position of points varies, I don't 
know why? or it is normal! I first checked the result of 
omnidirectional variogram but still to have checked for directional 
cases. I hope the plot will overlap exactly on these cases too!!
Thanking you
Pujan