solveCatchEq: Solves catch equation

In sandroklippel/fishassess: Functions on fishery biology, stock assessment and management.

Description

Solves catch equation using Newton-Raphson iteration.

Usage

solveCatchEq(catch, number2, M, accuracy=1e-04)

Arguments

catch	catch in number in t.
number2	number at sea in t+1.
M	natural mortality rate.
accuracy	desired accuracy.

Value

List with components

Number	number at sea.
F	fishing mortality rate.
accuracy	attained accuracy.

Author(s)

Sandro Klippel

References

Lassen, H., Medley, P., 2001. Virtual population analysis - A pratical manual for stock assessment. Vol. 400 of FAO Fisheries Technical Paper. FAO, Rome.

Press, W., Teukolsky, S., Vetterling, W., Flannery, B., 1992. Numerical Recipes in FORTRAN 77: The Art of Scientific Computing, 2nd Edition. Cambridge University Press, Cambridge.

See Also

vpa.age

Examples

solveCatchEq(25, 22.2, 0.2)

sandroklippel/fishassess documentation built on June 5, 2019, 10:54 a.m.