Common scale for independents

["Craig A. Roloff" <car9697@drtn303.ca.boeing.com>]

We're interested in using Kriging on data whose independent variables
are unrelated.  The range of the independent values may vary by
orders of magnitude.  For instance, the range of x might be .5->1,
the range of y be 10000->40000 and the range of z be 50->75.

Does gstat presume the independents have a common scale?

Can/should the discrepancy in scales be corrected using anisotropy?

Thanks,
Craig Roloff
craig.a.roloff@boeing.com