Description Usage Arguments Details Value References Examples
Estimation of a population's age distribution from its length distribution based on von Bertalanffy's growth curve, as described by Kell and Kell (2011)
1 2 | age_slicing(fi, li = as.numeric(names(fi)), vb_params,
age_limits, timing = 0.5)
|
fi |
A vector with the number of individuals per length class. |
li |
A vector containing the length value for each
length class. If blank, will use
|
vb_params |
A named vector with the parameters of
the von Bertalanffy growth equation, |
age_limits |
A vector with two elements, containing the lowest and highest age classes. |
timing |
Correction for the offset between the data
collection and recruitment. Defaults to |
Age distribution is calculated by using the inverse of the von Bertalanffy growth curve, whose parameters must be known. Limits for the minimum and maximum ages must also be given.
A vector containing the number of individuals in each age class.
Kell, L., Kell, A. (2011). A comparison of age slicing and statistical age estimation for mediterranean swordfish (Xiphias gladius). Collect. Vol. Sci. Pap. ICCAT. 66/4, 1522-1534
1 2 3 4 |
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.