Internal function used to plot effective sampling area (Borchers and Efford 2008) as a function of increasing buffer width given an `secr' object
esa.plot.secr (object, max.buffer = NULL, max.mask = NULL,
thin = 0.1, poly = NULL, session = 1, plt = TRUE, as.density
= TRUE, add = FALSE, overlay = TRUE, ...)secr object output from secr.fit
maximum width of buffer in metres
mask object
proportion of mask points to retain in plot and output
matrix of two columns interpreted as the x and y coordinates of a bounding polygon (optional)
vector of session indices (used if object spans multiple sessions)
logical to plot results
logical; if TRUE the y-axis is n / esa
logical to add line to an existing plot
logical; if TRUE then automatically add = TRUE
for plots after the first
graphical arguments passed to plot() and lines()
see esa.plot
esa.plot.secr provides a wrapper for esa.plot
that is called internally from esa.plot when it is presented with an
secr object. Arguments of esa.plot such as detectfn are
inferred from the fitted model.
If max.mask is not specified then a maximal mask of type
`trapbuffer' is constructed using max.buffer and the spacing of
the mask in object. In this case, if max.buffer is not
specified then it is set either to the width of the existing plot
(add = TRUE) or to 10 x sigma-hat from the fitted model in
object (add = FALSE).
esa.plot, mask,
pdot, make.mask, mask.check,
Detection functions