richard

richard.inverse

Computes the Richard growth model and its inverse
$$ y(t) = \frac{\alpha}{(1 + \beta exp(-k t))^{(1/m)}}$$

A compilation of nonlinear growth models.

Daniel Rodriguez Perez

growthmodels

Nonlinear Growth Models

richard function

<dl><dt>t</dt>
<dd>time</dd>
<dt>alpha</dt>
<dd>upper asymptote</dd>
<dt>beta</dt>
<dd>growth range</dd>
<dt>k</dt>
<dd>growth rate</dd>
<dt>m</dt>
<dd>slope of growth</dd>
<dt>x</dt>
<dd>size</dd></dl>

Arguments

Author

Richard growth model — richard

<dl>

<dt>t</dt>
<dd>time</dd>


<dt>alpha</dt>
<dd>upper asymptote</dd>


<dt>beta</dt>
<dd>growth range</dd>


<dt>k</dt>
<dd>growth rate</dd>


<dt>m</dt>
<dd>slope of growth</dd>


<dt>x</dt>
<dd>size</dd>

</dl>

richard: Richard growth model

Description

Usage

Arguments

Author

References

Examples