sigmoid_weight: Weight based sigmoidal selectivity function

In mizer: Dynamic Multi-Species Size Spectrum Modelling

Weight based sigmoidal selectivity function

Description

A sigmoidal selectivity function with 50% selectivity at weight sigmoidal_weight =w_{\text{sigmoid}} and width sigmoidal_sigma =\sigma.

S(w) = \left(1 + \left(\frac{w}{w_{\text{sigmoid}}}\right)^{-\sigma}\right)^{-1}

Usage

sigmoid_weight(w, sigmoidal_weight, sigmoidal_sigma, ...)

Arguments

w	Vector of sizes.
sigmoidal_weight	The weight at which the knife-edge operates.
sigmoidal_sigma	The width of the selection function.
...	Unused

Value

Vector of selectivities at the given sizes.

See Also

gear_params() for setting the selectivity parameters.

Other selectivity functions: double_sigmoid_length(), knife_edge(), sigmoid_length()

mizer documentation built on Oct. 17, 2024, 9:07 a.m.