params: Parameter Descriptions for ypr Functions
In ypr: Yield Per Recruit

params

R Documentation

Parameter Descriptions for ypr Functions

Description

Parameter Descriptions for ypr Functions

Arguments

`tmax`	The maximum age (yr).
`k`	The VB growth coefficient (yr-1).
`Linf`	The VB mean maximum length (cm).
`t0`	The (theoretical) age at zero length (yr).
`k2`	The VB growth coefficient after length L2 (yr-1).
`Linf2`	The VB mean maximum length after length L2 (cm).
`L2`	The length (or age if negative) at which growth switches from the first to second phase (cm or yr).
`Wb`	The weight (as a function of length) scaling exponent.
`Ls`	The length (or age if negative) at which 50 % mature (cm or yr).
`Sp`	The maturity (as a function of length) power.
`es`	The annual probability of a mature fish spawning.
`Sm`	The spawning mortality probability.
`fb`	The fecundity (as a function of weight) scaling exponent.
`tR`	The age from which survival is density-independent (yr).
`BH`	Recruitment follows a Beverton-Holt (1) or Ricker (0) relationship.
`Rk`	The lifetime spawners per spawner at low density (or the egg to tR survival if between 0 and 1).
`n`	The annual interval natural mortality rate from age tR.
`nL`	The annual interval natural mortality rate from length Ln.
`Ln`	The length (or age if negative) at which the natural mortality rate switches from n to nL (cm or yr).
`Lv`	The length (or age if negative) at which 50 % vulnerable to harvest (cm or yr).
`Vp`	The vulnerability to harvest (as a function of length) power.
`Llo`	The lower harvest slot length (cm).
`Lup`	The upper harvest slot length (cm).
`Nc`	The slot limits non-compliance probability.
`pi`	A vector of probabilities of capture to calculate the yield for.
`rho`	The release probability.
`Hm`	The hooking mortality probability.
`Rmax`	The number of recruits at the carrying capacity (ind).
`Wa`	The (extrapolated) weight of a 1 cm individual (g).
`fa`	The (theoretical) fecundity of a 1 g female (eggs).
`q`	The catchability (annual probability of capture) for a unit of effort.
`RPR`	The relative proportion of recruits that are of the ecotype.
`all`	A flag specifying whether to include all parameter values.
`u`	A flag specifying whether to plot the exploitation rate as opposed to the capture rate.
`percent`	A flag specifying whether to plot the number of fish as a percent or frequency (the default).
`color`	A string of the color around each bar (or NULL).
`population`	An object of class `ypr_population()`.
`populations`	An object of class `ypr_populations()`.
`ecotypes`	An object of class `ypr_ecotypes()`.
`plot_values`	A flag specifying whether to plot the actual and optimal values.
`Ly`	The minimum length (trophy) fish to consider when calculating the yield (cm).
`harvest`	A flag specifying whether to calculate the yield for harvested fish or captures.
`biomass`	A flag specifying whether to calculate the yield in terms of the biomass versus number of individuals.
`title`	A string of the report title.
`date`	A date of the report date.
`file`	A string of the path to the file (without the extension).
`binwidth`	A positive integer of the width of the bins for grouping.
`type`	A string indicating whether to include 'both' or just the 'actual' or 'optimal' yield.
`object`	The population or populations.
`...`	Unused parameters.
`expand`	A flag specifying whether to expand parameter combinations.
`view`	A flag specifying whether to view the report (after rendering it to html).
`ask`	A flag specifying whether to ask before overwriting or creating a file.
`description`	A string describing the population.
`age`	A numeric vector of the age (yr).
`length`	A numeric vector of the length (cm).
`names`	A character vector of unique ecotype names.
`x`	The object to coerce.