sampleSize

Computation of dendrometric and structural
parameters from forest inventory data. The objective is to provide an
user-friendly R package for researchers, ecologists, foresters,
statisticians, loggers and others persons who deal with forest inventory
data. Useful conversion of angle value from degree to radian, conversion from
angle to slope (in percentage) and their reciprocals as well as principal
angle determination are also included. Position and dispersion parameters
usually found in forest studies are implemented. The package contains
Fibonacci series, its extensions and the Golden Number computation.
Useful references are Arcadius Y. J. Akossou, Soufianou Arzouma,
Eloi Y. Attakpa, Noël H. Fonton and Kouami Kokou (2013) <doi:10.3390/d5010099>
and W. Bonou, R. Glele Kakaï, A.E. Assogbadjo, H.N. Fonton, B. Sinsin (2009)
<doi:10.1016/j.foreco.2009.05.032> .

Narcisse Yehouenou

dendrometry

Forest Estimations and Dendrometric Computations

Information and Communication Technology for you ONG (ICT4U-ONG) 

sampleSize function

<dl><dt>confLev</dt>
<dd>numeric, the confidence level. Default is <code>0.05</code>.</dd>
<dt>popPro</dt>
<dd>numeric, proportion of population which have considered factor.
Default is <code>0.5</code>.</dd>
<dt>errorMargin</dt>
<dd>numeric, margin error. Default is <code>0.05</code>.</dd>
<dt>size</dt>
<dd>integer, population size when it is know. If not specified,
simple random sampling will be used.</dd>
<dt>method</dt>
<dd>optional character string specifying method to use if not
simple adjusted is desired. Only "cauchran" is implemented now.</dd></dl>

Arguments

Sample size — sampleSize

<dl>

<dt>confLev</dt>
<dd>numeric, the confidence level. Default is <code>0.05</code>.</dd>


<dt>popPro</dt>
<dd>numeric, proportion of population which have considered factor.
Default is <code>0.5</code>.</dd>


<dt>errorMargin</dt>
<dd>numeric, margin error. Default is <code>0.05</code>.</dd>


<dt>size</dt>
<dd>integer, population size when it is know. If not specified,
simple random sampling will be used.</dd>


<dt>method</dt>
<dd>optional character string specifying method to use if not
simple adjusted is desired. Only "cauchran" is implemented now.</dd>

</dl>

sampleSize: Sample size

Description

Usage

Value

Arguments

Examples