### [SOLVED] questions about variogram fitting

Posted:

**Wed Nov 20, 2013 9:18 am**Hi,

I'd like to post on the forum two questions of my colleagues from INERIS.

When fitting the variogram, we obtain several objects. For instance :

data.model=model.auto(data.vario,struct=c('Nugget Effect','Spherical','Exponential'),auth.aniso=FALSE)

In their example, data.model contains a nugget effect and an exponential structure that are two different objects.

So here is their questions :

1) Is the fitting able to introduce two structures of the same kind (I guess this issue comes from an older kriging program developed in gstat they would like to convert in RGeoS and that consider for instance two spherical/exponential structures of small and large range) ?

2) If so, is it possible to fix the maximal number of structure by kind of structure ?

Kind regards,

Maxime

I'd like to post on the forum two questions of my colleagues from INERIS.

When fitting the variogram, we obtain several objects. For instance :

data.model=model.auto(data.vario,struct=c('Nugget Effect','Spherical','Exponential'),auth.aniso=FALSE)

In their example, data.model contains a nugget effect and an exponential structure that are two different objects.

So here is their questions :

1) Is the fitting able to introduce two structures of the same kind (I guess this issue comes from an older kriging program developed in gstat they would like to convert in RGeoS and that consider for instance two spherical/exponential structures of small and large range) ?

2) If so, is it possible to fix the maximal number of structure by kind of structure ?

Kind regards,

Maxime