vario-class {RGeostats} | R Documentation |
This class contains the experimental variogram calculated in one or several directions, for one or several variables.
Objects can be created by calls of the form new("vario", ...)
.
Description of the set of experimental variograms performed on one or several variables
calcul
:Object of class "character"
Type of variogram calculation. Here "variogram" is used as a generic name: in fact, it can be any of the structural quantities, such as:
Variogram
Covariance (non centered)
Transitive Covariogram
Madogram (Variogram of order 1)
Rodogram (Variogram of order 1/2)
Variogram of a Poisson-weighted variable
by.sample
:Object of class "logical"
Specify if the variogram is calculated per sample or not
ndim
:Object of class "numeric"
Space dimension
nvar
:Object of class "numeric"
Number of variables
scale
:Object of class "numeric"
Scale
means
:Object of class "numeric"
Array of variable means
vars
:Object of class "numeric"
Array of variable variances
names
:Names of the variables involved in calculations
vardirs
:Object of class vardir-class
Array of Directional experimental variograms
vario[idir]
returns the vardir-class
containing the experimental variogram calculated in the direction idir
.
Same but for assignment
vario$parameter
is used to query the value of parameter
from vario
:
calcul : Type of calculation
vg : Variogram
cov : Covariance
covnc : Non-centered Covariance
covg : Transitive Covariogram
mado : Madogram (Variogram of order 1)
rodo : Rodogram (Variogram of order 1/2)
poisson : Variogram of a Poisson-weighted variable
by.sample : 1 if the variogram is calculated by sample; 0 otherwise
ndim : Space dimension
nvar : Number of variables
ndir : Number of directions
opt.code : Option for testing the code
0 : a pair is retained whatever their codes
1 : a pair is retained only if the codes of the samples are closer than tolcode
2 : a pair is retained only if the codes of the samples are different
scale : Scale
tolcode : Tolerance on the code (see opt.code option)
means : Array of means
vars : Array of variances
names : List of the variable names
vardirs : Array of vardir-class
Same but for assignment
Other functions are available, such as:
vario.calc
Calculate variograms on a set of points
vario.grid
Calculate variograms on a regular grid
vario.vect
Calculate variograms for vectorial data
vario.window
Returns the dimensions of the variogram plot
showClass("vario")