sigmoid_length

the length which gives a selectivity of 25%.

the length which gives a selectivity of 50%.

the multiplier of the length-weight function.

the exponent of the length-weight function.

A sigmoid shaped selectivity function. Based on two parameters <code>l25</code> and
<code>l50</code> which determine the length at which 25% and 50% of the stock is
selected respectively. As the size-based model is weight based, and this
selectivity function is length based, it is also necessary to supply the
length-weight parameters <code>a</code> and <code>b</code>.

A set of classes and methods to set up and run multi-species, trait
based and community size spectrum ecological models, focused on the marine
environment.

Gustav Delius

mizer

sigmoid_length: Length based sigmoid selectivity function

Description

Usage

Arguments