[R-sig-Geo] spatio-temporal

[Tom Gottfried]

Am 24.04.2012 08:00, schrieb Saman Monfared:
> Dear all.
> I am trying to calculate and 3d plot of empirical spatio-temporal
> variogram using RandomFields
> and CompRandFld packages. The below program is an example in
> CompRandFld package:
>
>
> library(CompRandFld)
> library(RandomFields)
> library(scatterplot3d)
> set.seed(31231)
> # Define the spatial-coordinates of the points:
> x<- runif(20, 0, 1)
> y<- runif(20, 0, 1)
> # Define the temporal sequence:
> time<- seq(0, 50, 1)
> # Simulation of the spatio-temporal Gaussian random field:
> data<- RFsim(x, y, time, corrmodel="exp_exp",param=list(mean=mean,
> nugget=nugget,scale_s=0.5,scale_t=1,sill=sill))$data
>
> the error is :
>
> Error: could not find function "RFsim"

The function either does not exist (e.g. because "RFsim" is a misspelled 
name of an existing function. Beware that R is case sensitive) or exists 
in a package that you did not (successfully) load.

Tom

> please guide me about this.
> Thanks.

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