l2w {mizer}

Length-weight conversion

Description

Convert between length and weight using the relationship

w = a l^b

where a and b are taken from the species parameter data frame.

Usage

l2w(l, params)

w2l(w, params)

Arguments

l

Lengths in cm. Either a single number or a vector with one number for each species.

params

A species parameter data frame or a MizerParams object.

w

Weights in grams. Either a single number or a vector with one number for each species.

Details

This is useful for converting a length-based species parameter to a weight-based species parameter.

If any a or b parameters are missing the default values a = 0.01 and b = 3 are used for the missing values.

Value

A vector with one entry for each species. l2w() returns a vector of weights in grams and w2l() returns a vector of lengths in cm.