wolfcamp

Piezometric head measurements taken at the Wolfcamp Aquifer, Texas, USA.
 See <cite>Cressie (1993, p. 212--214)</cite> for description of the scientific
 problem and the data. Original data were converted to SI units:
 coordinates are given in kilometers and pressure heads in meters.

datasets

Provides functions for efficiently fitting linear models with spatially correlated errors by robust (Kuensch et al. (2011) <doi:10.3929/ethz-a-009900710>) and Gaussian (Harville (1977) <doi:10.1080/01621459.1977.10480998>) (Restricted) Maximum Likelihood and for computing robust and customary point and block external-drift Kriging predictions (Cressie (1993) <doi:10.1002/9781119115151>), along with utility functions for variogram modelling in ad hoc geostatistical analyses, model building, model evaluation by cross-validation, (conditional) simulation of Gaussian processes (Davies and Bryant (2013) <doi:10.18637/jss.v055.i09>), unbiased back-transformation of Kriging predictions of log-transformed data (Cressie (2006) <doi:10.1007/s11004-005-9022-8>).

Andreas Papritz

georob

Robust Geostatistical Analysis of Spatial Data

wolfcamp function

A data frame with 85 observations on the following 3 variables:<dl> <dt><code>x</code></dt>
<dd>a numeric vector with the easting coordinate in
 kilometers.</dd>
 <dt><code>y</code></dt>
<dd>a numeric vector with the northing coordinate in
 kilometers.</dd>
 <dt><code>pressure</code></dt>
<dd>a numeric vector with the piezometric head in
 meters.</dd>
 
</dl>

Format

Wolfcamp Aquifer Data — wolfcamp

A data frame with 85 observations on the following 3 variables:

<dl>

 <dt><code>x</code></dt>
<dd>a numeric vector with the easting coordinate in
 kilometers.</dd>


 <dt><code>y</code></dt>
<dd>a numeric vector with the northing coordinate in
 kilometers.</dd>


 <dt><code>pressure</code></dt>
<dd>a numeric vector with the piezometric head in
 meters.</dd>


 
</dl>

wolfcamp: Wolfcamp Aquifer Data

Description

Usage

Arguments

Format

References

Examples