--- Isobel Clark <[EMAIL PROTECTED]> wrote:
> You want to simulate data with different sills in
> different directions?
>
> Isobel
=====================================================
YES.
I must explain my problem, more.
I considered to isotropic variogram models g1 and g2
:
- g1 in direction 0 with parameters c01, c1 and a1
- and g2 in direction pi/2 with c02, c2 and a2
Then I combined these models and therefore constructed
an anisotropic variogram such as:
g(x,y) = w(x,y) * g1 + [ 1 - w(x,y) ] * g2
where w(x,y) is a weigthing function.
For simulation spatial data of this model I need the
Covariance function C(x,y) corresponding to g(x,y).
In fact I need C(0,0) !
Good Thanks: Webster
======================================================
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