SSplotYield {r4ss}

Plot yield and surplus production.

Description

Plot yield and surplus production from Stock Synthesis output. Surplus production is based on Walters et al. (2008).

Usage

SSplotYield(
  replist,
  subplots = 1:4,
  refpoints = c("MSY", "Btgt", "SPR", "Current"),
  add = FALSE,
  plot = TRUE,
  print = FALSE,
  labels = c("Fraction unfished", "Equilibrium yield (mt)", "Total biomass (mt)",
    "Surplus production (mt)", "Yield per recruit (kg)"),
  col = "blue",
  col2 = "black",
  lty = 1,
  lwd = 2,
  cex.main = 1,
  pwidth = 6.5,
  pheight = 5,
  punits = "in",
  res = 300,
  ptsize = 10,
  plotdir = "default",
  verbose = TRUE
)

Arguments

replist

A list object created by SS_output().

subplots

vector controlling which subplots to create Numbering of subplots is as follows:

• 1 yield curve

• 2 yield curve with reference points

• 3 surplus production vs. biomass plots (Walters et al. 2008)

refpoints

character vector of which reference points to display in subplot 2, from the options 'MSY', 'Btgt', and 'SPR'.

add

add to existing plot? (not yet implemented)

plot

plot to active plot device?

print

print to PNG files?

labels

vector of labels for plots (titles and axis labels)

col

line color for equilibrium plot

col2

line color for dynamic surplus production plot

lty

line type (only applied to equilibrium yield plot at this time)

lwd

line width (only applied to equilibrium yield plot at this time)

cex.main

character expansion for plot titles

pwidth

width of plot

pheight

height of plot

punits

units for PNG file

res

Resolution of plots printed to files. The default is res = 300.

ptsize

point size for PNG file

plotdir

directory where PNG files will be written. by default it will be the directory where the model was run.

verbose

report progress to R GUI?

Author(s)

Ian Stewart, Ian Taylor

References

Walters, Hilborn, and Christensen, 2008, Surplus production dynamics in declining and recovering fish populations. Can. J. Fish. Aquat. Sci. 65: 2536-2551

See Also

SS_plots(), SS_output()