potential.kriging {RGeostats} | R Documentation |

Estimation using the Potential Method

potential.kriging(db, dbgrd, dbout, dbtgt = NA, model = model.input(), neigh = neigh.input(), degree = 0, nugget.grd = 0, nugget.tgt = 0, zmin=0, zmax=100, znumber=10, flag.up = TRUE, flag.grad = FALSE, flag.trans=TRUE, flag.part = 0, verbose = FALSE, radix = "Potential", modify.target = db.locmod())

`db` |
The |

`dbgrd` |
The |

`dbout` |
The |

`dbtgt` |
The |

`model` |
The Gaussian Cubic Spline (2nd-order)
An additional nugget effect is also authorized. |

`neigh` |
The |

`degree` |
Degree of the Intrinsic Random Function used to describe the Potential Random Variable. Note that the degree must be 2 if the model contains the 2nd order Spline Generalized Covariance. |

`nugget.grd` |
The value of the nugget effect on the Gradient component |

`nugget.tgt` |
The value of the nugget effect on the Tangent component |

`zmin` |
In the Interpolation Mode (see comments on 'dbout'), this values gives the minimum for interpolating the elevation of the different isolines. |

`zmax` |
In the Interpolation Mode (see comments on 'dbout'), this values gives the maximum for interpolating the elevation of the different isolines. |

`znumber` |
In the Interpolation Mode (seed comments on 'dbout'), the search interval (between 'zmin' and 'zmax') is sampled at 'znumber' regularly spaced points to speed up the search. |

`flag.up` |
In the Interpolation Mode (seed comments on 'dbout'), the search is performed going from z_min up to z_max when 'flag.up' is TRUE; otherwise the search is performed downwards. |

`flag.grad` |
When TRUE, the estimation of the potential is calculated together with the gradient components. When FALSE, only the potential estimation is calculated. |

`flag.trans` |
When TRUE, the estimation is returned as the layer rank; otherwise the estimation is provided as the potential value. |

`flag.part` |
The user may decompose the contribution of the different elements in the potential estimation. This parameters must be specified as follows: 0 the whole potential 1 the gradient contribution 2 the tangent contribution 3 the isovalues contribution 4 the (internal) drift contribution 5 the external drift contribution
By linearity, the sum of all the components (flag.part>0) should be equal to the potential estimation (flag.part==0). |

`verbose` |
Verbose option |

`radix` |
Radix of the name given to the variables storing the results in the target Db. |

`modify.target` |
Decides whether or not the newly created variables will have their
locator defined or not. For more information, see |

The target Db where the following variables have been added:

the estimation variable

the gradient estimation variables (if flag.grad=TRUE)

[Package *RGeostats* version 11.0.6 Index]