simdata

A simulated data set that can be used with the <code>sptotal</code> package.

datasets

Performs predictions of totals and weighted sums, or finite population block kriging, on spatial data using the methods in Ver Hoef (2008) <doi:10.1007/s10651-007-0035-y>. The primary outputs are an estimate of the total, mean, or weighted sum in the region, an estimated prediction variance, and a plot of the predicted and observed values. This is useful primarily to users with ecological data that are counts or densities measured on some sites in a finite area of interest. Spatial prediction for the total count or average density in the entire region can then be done using the functions in this package.

Higham Matt

sptotal

Predicting Totals and Weighted Sums from Spatial Data

Matt Higham

Jay Ver Hoef

Bryce Frank

Michael Dumelle

simdata function

A data frame object including:<dl>
 <dt>x</dt>
<dd>The x-coordinate for each site</dd> <dt>y</dt>
<dd>The y-coordinate for each site</dd> <dt>X1</dt>
<dd>Simulated independent variable to be used as a predictor</dd> <dt>X2</dt>
<dd>Simulated independent variable to be used as a predictor</dd> <dt>X3</dt>
<dd>Simulated independent variable to be used as a predictor</dd> <dt>X4</dt>
<dd>Simulated independent variable to be used as a predictor</dd> <dt>X5</dt>
<dd>Simulated independent variable to be used as a predictor</dd> <dt>X6</dt>
<dd>Simulated spatially correlated random variable to be used as a predictor</dd> <dt>X7</dt>
<dd>Simulated spatially correlated random variable to be used as a predictor</dd> <dt>F1</dt>
<dd>Simulated factor variable to be used as a predictor</dd> <dt>F2</dt>
<dd>Simulated factor variable to be used as a predictor</dd> <dt>Z</dt>
<dd>The simulated response variable.</dd> <dt>wts1</dt>
<dd>Prediction weights if estimating an overall mean</dd> <dt>wts2</dt>
<dd>Prediction weights for estimating a total over a subset of 25 contiguous plots</dd>
</dl>

Format

Simulated Spatially Autocorrelated Data. — simdata

A data frame object including:<dl>
 <dt>x</dt>
<dd>The x-coordinate for each site</dd>

 <dt>y</dt>
<dd>The y-coordinate for each site</dd>

 <dt>X1</dt>
<dd>Simulated independent variable to be used as a predictor</dd>

 <dt>X2</dt>
<dd>Simulated independent variable to be used as a predictor</dd>

 <dt>X3</dt>
<dd>Simulated independent variable to be used as a predictor</dd>

 <dt>X4</dt>
<dd>Simulated independent variable to be used as a predictor</dd>

 <dt>X5</dt>
<dd>Simulated independent variable to be used as a predictor</dd>

 <dt>X6</dt>
<dd>Simulated spatially correlated random variable to be used as a predictor</dd>

 <dt>X7</dt>
<dd>Simulated spatially correlated random variable to be used as a predictor</dd>

 <dt>F1</dt>
<dd>Simulated factor variable to be used as a predictor</dd>

 <dt>F2</dt>
<dd>Simulated factor variable to be used as a predictor</dd>

 <dt>Z</dt>
<dd>The simulated response variable.</dd>

 <dt>wts1</dt>
<dd>Prediction weights if estimating an overall mean</dd>

 <dt>wts2</dt>
<dd>Prediction weights for estimating a total over a subset of 25 contiguous plots</dd>


</dl>

simdata: Simulated Spatially Autocorrelated Data.

Description

Usage

Arguments

Format

Examples