vmap.auto {RGeoS}R Documentation

Automatic Model Fitting on Variogram Map

Description

Automatic Model Fitting on Variogram Map

Usage

vmap.auto(dbmap, struct = melem.name(c(1,4,5,2,3)), 
auth.aniso = TRUE, auth.rotation = TRUE, 
auth.locksame = FALSE, auth.lock2d = FALSE, flag.noreduce = FALSE,
flag.norm.sill=FALSE,flag.goulard=TRUE,
param = NA, lower = NA, upper = NA, draw = TRUE, 
maxiter = 100, verbose=0, tolstop = 1.e-5, 
epsdelta = 1.e-5, tolsigma = 5, delta=1, ...)

Arguments

dbmap

The db-class containing the result of the Variogram Map (stored as 'z' variables)

struct

List of basic structures to be used

auth.aniso

When TRUE, the anisotropy will be checked

auth.rotation

When TRUE, the fit will look for rotation in anisotropy

auth.locksame

When TRUE and if an anisotropy is allowed (auth.aniso), all the basic structures should share the same rotation.

auth.lock2d

When TRUE, the anisotropy rotation will only consider a rotation around the Z-axis. The Dip and Plunge angles are kept equal to zero.

flag.noreduce

When TRUE, the useless basic structures must not be discarded.

flag.norm.sill

When TRUE, the automatic fit must fulfill the constraint that the sum of the sills must always be equal to 1

flag.goulard

When TRUE, the sills are estimated using the Goulard algorithm's rather than Foxleg's one, at least if no constraint is applied on the sills.

param

List of initial values for the parameters to be fitted

lower

List of lower bounds for the parameters to be fitted

upper

List of upper bounds for the parameters to be fitted

draw

When TRUE, both the experimental variograms and the Model are represented graphically. Otherwise, no graphic is produced.

maxiter

Maximum number of iterations

verbose

When TRUE, indications are given regarding the convergence of the algorithm used for automatic model fitting.

tolstop

Tolerance for the distance between the experiment and the model.

epsdelta

Tolerance for the direction increment used in the gradient search

tolsigma

Percentage of the variance below which a basic structure will be discarded

delta

Delta value

...

Arguments passed for the legend (see legend.line)

Value

The model-class with fitted parameters


[Package RGeoS version 9.1.1 Index]