melem-class {RGeostats} R Documentation

Class "melem" Basic Structure

Basic structure

Objects from the Class

Objects can be created by calls of the form `new("melem", ...)`. Basic structure

Slots

`vartype`:

Object of class `"character"` Type of the basic structure This argument must be chosen among:

• Nugget effect

• Exponential

• Spherical

• Cubic

• Gaussian

• Cardinal Sine

• J-Bessel

• K-Bessel

• Gamma

• Cauchy

• Stable

• Linear

• Cosinus (1D)

• Triangle (1D)

• Cosine Exponential

• Exp2dfact

• Expfact

• Reg1D (1D)

• Pentamodel

• Power

• Order-1 GC

Some are restricted to 1-D case. The two last structures are not available for covariances

`sill`:

Object of class `"matrix"` Array of sills (or slopes)

`range`:

Object of class `"numeric"` Range

`param`:

Object of class `"numeric"` Third parameter

`flag.aniso`:

Object of class `"logical"` Specify if the anisotropy must be defined

`aniso.rotmat`:

Object of class `"matrix"` Rotation matrix defining the main axes of the anisotropy ellipsoid

`aniso.coeffs`:

Object of class `"matrix"` Matrix of coefficients that divide the (isotropic) range along the main axes of the anisotropy ellipsoid

Methods

\\$

`melem\$parameter` is used to query the value of `parameter` from `melem`:

• vartype : Type of the covariance or variogram

• sill : Array of sills

• range : Range value

• flag.aniso : 1 if the basic structure is anisotropic

• aniso.rotmat : Rotation matrix defining the main axes of the anisotropy ellipsoid

• aniso.coeffs : Matrix of anisotropy ratio

\\$<-

Same as above but for assignment

See Also

Other functions are available, such as:

• `melem.init` Initialize a `melem-class` structure

• `melem.name` Returns the name of the structure specified by its rank

Examples

```showClass("melem")
```

[Package RGeostats version 11.1.2 Index]