plot.birp_data: Plot a birp_data Object

In birp: Testing for Population Trends Using Low-Cost Ecological Count Data

Plot a birp_data Object

Description

This function plots observed counts per unit of effort over time, for each method-location combination in a birp_data object.

Usage

## S3 method for class 'birp_data'
plot(
  x,
  col = 1:length(x$locations),
  lwd = 1,
  lty = 1:length(x$method_names),
  pch = 1:length(x$CI_groups),
  xlab = "time",
  ylab = "counts per unit of effort",
  legend.x = "topright",
  legend.y = NULL,
  legend.bty = "o",
  xlim = range(as.numeric(x$times)),
  ylim = NA,
  ...
)

Arguments

x	A birp_data object to be plotted.
col	A vector of colors, recycled to match the number of locations.
lwd	A vector of line widths, recycled to match the number of method-location combinations.
lty	A vector of line types, recycled to match the number of methods.
pch	A vector of plotting characters, recycled to match the number of control-intervention (CI) groups.
xlab	Label for the x-axis.
ylab	Label for the y-axis.
legend.x	The x-position for the legend. Use NA to omit the legend.
legend.y	The y-position for the legend.
legend.bty	Box type for the legend; either "o" (default) or "n".
xlim	Numeric vector specifying the x-axis limits.
ylim	Numeric vector specifying the y-axis limits. If NA, limits are computed automatically.
...	Additional graphical parameters passed to plot() or lines().

Value

No return value. Called for side effects.

Examples

data <- simulate_birp()
plot(data)

birp documentation built on Nov. 3, 2026, 1:09 a.m.