Description Usage Arguments Details Value Author(s) References See Also Examples

Valid scalar variogram model functions.

1 2 3 4 5 6 | ```
vgram.sph( h , nugget = 0, sill = 1, range= 1,... )
vgram.exp( h , nugget = 0, sill = 1, range= 1,... )
vgram.gauss( h , nugget = 0, sill = 1, range= 1,... )
vgram.lin( h , nugget = 0, sill = 1, range= 1,... )
vgram.pow( h , nugget = 0, sill = 1, range= 1,... )
vgram.nugget( h , nugget = 1,...,tol=1E-8 )
``` |

`h` |
a vector providing distances, a matrix of distance vectors in its rows or a data.frame of distance vectors. |

`nugget` |
The size of the nugget effect (i.e. the limit to 0). At zero itself the value is always 0. |

`sill` |
The sill (i.e. the limit to infinity) |

`range` |
The range parameter. I.e. the distance in which sill is reached or if this does not exist, where the value is in some sense nearly the sill. |

`...` |
not used |

`tol` |
The distance that is considered as nonzero. |

The univariate variograms are used in the CompLinCoReg as building blocks of multivariate variogram models.

sphSpherical variogram

expExponential variogram

gaussThe Gaussian variogram.

linLinear Variogram. Increases over the sill, which is reached at

`range`

.powThe power variogram. Increases over the sill, which is reached at

`range`

.nuggetThe pure nugget effect variogram.

A vector of size NROW(h), giving the variogram values.

K.Gerald v.d. Boogaart http://www.stat.boogaart.de

Cressie, N.C. (1993) Spatial statistics

Tolosana, van den Boogaart, Pawlowsky-Glahn (2009) Estimating and modeling variograms of compositional data with occasional missing variables in R, StatGis09

`vgram2lrvgram`

,
`CompLinModCoReg`

,
`vgmFit`

1 2 3 4 5 6 7 8 |

```
Loading required package: tensorA
Attaching package: 'tensorA'
The following object is masked from 'package:base':
norm
Loading required package: robustbase
Loading required package: energy
Loading required package: bayesm
Welcome to compositions, a package for compositional data analysis.
Find an intro with "? compositions"
Attaching package: 'compositions'
The following objects are masked from 'package:stats':
cor, cov, dist, var
The following objects are masked from 'package:base':
%*%, scale, scale.default
Warning message:
In structure(c(), class = c(class(x), class(y))) :
Calling 'structure(NULL, *)' is deprecated, as NULL cannot have attributes.
Consider 'structure(list(), *)' instead.
```

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