bottom_delim_vspd: Delimitate bottom phase of dive using vertical speed...

In SESman/rbl: Biologging tools for diving predators in R

Description

Delimitate bottom which is defined as the period between the first and last moment in the dive were vertical speed (simplified signal using poly) exceeds a threshold.

Usage

bottom_delim_vspd(time = NULL, y = NULL, y.type = c("depth", "vspd"),
  vert_vel = 0.75, w = 21)

Arguments

time	time readings, sorted in chronological order.
vert_vel	the verical speed threshold.
w	a window width to use for vertical speed smoothing (moving average) when vspd is not provided.
depth	depth readings, sorted in chronological order.
vspd	smoothed verical speed, sorted in chronological order. Optional. If provided, function is faster as it does not need to compute it from depth and time.

Examples

data(exses)
ind(exses)

n <- 65
idx <- tdrply(bottom_delim_vspd, 1:2, "!_/", no = n)[[1]]
tdrply(plot, 1:2, "!_/", no = n, main = n)
tdrply(function(x, st, ed, ...) points(x[st:ed, ]), 1:2, no = n, la = idx)

SESman/rbl documentation built on May 9, 2019, 11:10 a.m.