scompvar

compvar

<code>scompvar</code> can be used to calculate the average component of variation
among units and the average component of variation within samples in terms
of sampling effort.

A system for calculating the optimal sampling effort, based on the ideas of
"Ecological cost-benefit optimization" as developed by A. Underwood (1997,
ISBN 0 521 55696 1). Data is obtained from simulated ecological communities with
prep_data() which formats and arranges the initial data, and then the
optimization follows the following procedure of four functions: (1) scompvar()
calculates the variation components necessary for (2) sim_cbo() to calculate
the optimal combination of number of sites and samples depending on either
an economic budget or on a desired statistical accuracy. Additionally, (3)
sim_beta() estimates statistical power and type 2 error by using Permutational
Multivariate Analysis of Variance, and (6) plot_power() represents the
results of the previous function.

Arturo Sanchez-Porras

ecocbo

Calculating Optimum Sampling Effort in Community Ecology

Edlin Guerra-Castro

scompvar function

<dl><dt>data</dt>
<dd>Object of class "ecocbo_data" that results from <code>prep_data()</code>.</dd>
<dt>n</dt>
<dd>Number of samples to be considered. Defaults to NULL.</dd>
<dt>m</dt>
<dd>Site label to be used as basis for the computation. Defaults to NULL.</dd></dl>

Arguments

Edlin Guerra-Castro (<a href="/link/edlinguerra%40gmail.com?package=ecocbo&version=0.12.0" data-mini-rdoc="ecocbo::edlinguerra@gmail.com">edlinguerra@gmail.com</a>), Arturo Sanchez-Porras

Author

Simulated components of variation — scompvar

<dl>

<dt>data</dt>
<dd>Object of class "ecocbo_data" that results from <code>prep_data()</code>.</dd>


<dt>n</dt>
<dd>Number of samples to be considered. Defaults to NULL.</dd>


<dt>m</dt>
<dd>Site label to be used as basis for the computation. Defaults to NULL.</dd>

</dl>

Edlin Guerra-Castro (<a href='mailto:edlinguerra@gmail.com'>edlinguerra@gmail.com</a>), Arturo Sanchez-Porras

scompvar: Simulated components of variation

Description

Usage

Value

Arguments

Author

References

See Also

Examples