resmaxcml {mort}

Maximum cumulative residence duration

Description

Find the maximum duration that an animal spent at a single station/location before a station change (i.e., the animal can be assumed to be alive). Differs from resmax in that the duration is cumulative - the time of residence events and intervals between residence events are all included, provided there are no intervening residence events at other stations/locations.

Usage

resmaxcml(
  data,
  ID,
  station,
  res.start,
  res.end,
  residences,
  units,
  stnchange,
  verbose = TRUE
)

Arguments

data

a dataframe of residence events. Residence events must include tag ID, location name, start time, and duration.

ID

a string of the name of the column in data that holds the tag or sample IDs.

station

a string of the name of the column in data that holds the station name or receiver location.

res.start

a string of the name of the column in data that holds the start date and time. Must be specified and in POSIXt if type="manual".

res.end

a string of the name of the column in data that holds the end date and time. Must be specified and in POSIXt if type="manual".

residences

a character string with the name of the column in data that holds the duration of the residence events.

units

units of the duration of the residence events in data.

stnchange

a dataframe with the start time and location of the most recent station or location change. Must use the same column names as data.

verbose

option to display progress bar as function is run. Default is TRUE.

Value

a dataframe with the cumulative residence information for each period where an animal was consecutively detected at a single station/location. Records are only given for cumulative residences that occurred before the most recent station/location change (i.e., the animal can be assumed to be alive).

Examples

# Identify most recent station change
station.change<-stationchange(data=events[events$ID=="A",],type="mort",
ID="ID",station="Station.Name",verbose=FALSE)

cumulative_events<-resmaxcml(data=events[events$ID=="A",],ID="ID",
station="Station.Name",res.start="ResidenceStart",res.end="ResidenceEnd",
residences="ResidenceLength.days",units="days",
stnchange=station.change,verbose=FALSE)