intvariogram

intvariogram,intgrd-method

intvariogram,intsp-method

Function to fit empirical variograms for an interval-valued spatial object

An interval-valued extension of ordinary and simple kriging.
Optimization of the function is based on a generalized interval distance.
This creates a non-differentiable cost function that requires a
differentiable approximation to the absolute value function. This
differentiable approximation is optimized using a Newton-Raphson algorithm
with a penalty function to impose the constraints. Analyses in the package
are driven by the 'intsp' and 'intgrd'
classes,
which are interval-valued extensions of
'SpatialPointsDataFrame' and 'SpatialPixelsDataFrame' respectively.
The package includes several wrappers to functions in the
'gstat' and 'sp' packages.

Brennan Bean

intkrige

A Numerical Implementation of Interval-Valued Kriging

intvariogram function

<dl><dt>x</dt>
<dd>An object of class intsp or intgrd.</dd>
<dt>centerFormula</dt>
<dd>A formula specifying any external trends for the
interval centers.</dd>
<dt>...</dt>
<dd>Additional arguments for sp::variogram().</dd></dl>

Arguments

Function to fit empirical variograms for an interval-valued spatial object — intvariogram

<dl>

<dt>x</dt>
<dd>An object of class intsp or intgrd.</dd>


<dt>centerFormula</dt>
<dd>A formula specifying any external trends for the
interval centers.</dd>


<dt>...</dt>
<dd>Additional arguments for sp::variogram().</dd>

</dl>

intvariogram: Function to fit empirical variograms for an interval-valued spatial object

Description

Usage

Value

Arguments