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Stairstep Attainment Function

stairstep_attainment.Rd

Defines attainment level based on a three stepped function, with optional phase ins periods where a linear combination of stairsteps is applied. Attainment is assumed to be a function of the established TAC.

Usage

stairstep_attainment(v, breakpoints, levels, phase_ins)

Arguments

v

a total allowable catch (TAC) level

breakpoints

TAC levels that define where a transition in attainment level occurs

levels

attainment levels associated with each set of breakpoints (0 - breakpoint[1], breakpoinut[1]-breakpoint[2], breakpoint[2] - Inf)

phase_ins

optional phase_in width. When specified, a phase ins begin talking effect at phase_ins/2 before each breakpoints value and end at phase_ins/2 after each breakpoint value.