vario-class {RGeostats}

R Documentation

Class "vario" Experimental Variograms

Description

This class contains the experimental variogram calculated in one or several directions, for one or several variables.

Objects from the Class

Objects can be created by calls of the form new("vario", ...). Description of the set of experimental variograms performed on one or several variables

Slots

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

dates:

Object of class "numeric" which gives the bounds of the Date Intervals

names:

Names of the variables involved in calculations

vardirs:

Object of class vardir-class Array of Directional experimental variograms

Methods

[

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

• hmax : Matrix of the maximum calculation distances

• vmin : Matrix of the minimum variance/covariance values

• vmax : Matrix of the maximum variance/covariance values

• vardirs : Array of vardir-class

\$<-

Same but for assignment

show

model.print

print

model.print

plot

model.plot

See Also

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

Examples

showClass("vario")

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