show.detfn: Plotting a detection function.

In b-steve/ascr: Acoustic spatial capture-recapture

Plotting a detection function.

Description

Plots an estimated detection function from a model fit generated by fit.ascr.

Usage

show.detfn(
  fit,
  xlim = NULL,
  ylim = c(0, 1),
  main = NULL,
  xlab = "Distance (m)",
  ylab = "Detection probability",
  add = FALSE,
  ...
)

Arguments

fit	A fitted model from fit.ascr.
xlim	A vector with two elements, giving the x-axis limits. If NULL, this is set to the buffer of the mask.
ylim	A vector with two elements, giving the y-axis limits.
main	The main title (on top) using font, size (character expansion) and color par(c("font.main", "cex.main", "col.main")).
xlab	X axis label using font, size and color par(c("font.lab", "cex.lab", "col.lab")).
ylab	Y axis label, same font attributes as xlab.
add	Logical, if TRUE, the estimated detection function is added to an existing plot.
...	Further arguments to be passed to lines.

Examples

## Comparison of two detection functions fitted to the same data
show.detfn(example.data$fits$simple.hn, main = "Detection function comparison")
show.detfn(example.data$fits$simple.hr, add = TRUE, col = "blue")
legend("topright", legend = c("Half normal", "Hazard rate"), lty = 1, col = c("black", "blue"), bg = "white")

b-steve/ascr documentation built on Aug. 15, 2022, 2:38 p.m.