Hi all,
Does anyboby can explain to me the origin of the variogram models: spherical
and exponential ? Why the names spherical and exponential ?
Sincerely
Charles
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Matheron used the term spherical to describe the
semi-variogram model which represents the concept of
two overlapping 'spheres of influence'. The formula is
actually the geometric calculation of the amount by
which two spheres of diameter 'a' (range of influence)
do NOT overlap when their centres
