obsIndexTemporal: Relative observation index (Temporal)

In BIRDS: Biodiversity Information Review and Decision Support

Description

This function extracts the proportion of visits (or observations) detecting a focal species to all visits (or observations) over time.

Usage

obsIndexTemporal(
  x,
  timeRes,
  focalSp = NULL,
  visits = TRUE,
  fs.rm = TRUE,
  norm = TRUE
)

Arguments

x	an object of class ‘SummarizeBirds’.
timeRes	the time resolution: "Yearly", "Monthly" or "Daily"
focalSp	the focal sp to look for.
visits	if TRUE (default) the observation index is calculated over number of visits, else uses the number of observations.
fs.rm	if TRUE, assumes that the observations for the focal species are included in 'group' and will remove them
norm	if TRUE, the result is normalized to a 0-1 range

Value

An xts timeseries

BIRDS documentation built on June 27, 2021, 1:06 a.m.