\(P(l \mid a)\) on the length bins given by their lower edges: the normal (or lognormal) CDF is taken at every lower edge,
differenced, and the tails below the first edge and above the last are
accumulated into the end bins, so every column sums to one.
Usage
get_alk(len_lower, mu, sd, dist = 0)
Arguments
- len_lower
Numeric vector of lower bin edges.
- mu
Mean length at age, possibly AD.
- sd
Spread of length at age, possibly AD.
- dist
Integer, 0 normal, 1 lognormal (sd on the log scale, mean
corrected so the arithmetic mean stays mu).
Value
Matrix [n_lens x n_ages].