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.
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.
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.
