get_presence_rc: Determine presence of adult individuals in the Small Camp Red...
In urskalbitzer/daginR: Analyses of Monkey Data from Scan and Focal Samples

View source: R/process-redcolobus-data.R

This function uses scan data in combination with data on the first-adult-month of individuals to determine for each month whether an individual was 1) adult and 2) present

get_presence_rc(
  scandata_df,
  first_month_adult_df,
  from_date,
  to_date,
  n_min = 5,
  details = FALSE
)

`scandata_df`	Data frame with red colobus scan data
`first_month_adult_df`	Dataframe with first-month-adult dates
`from_date, to_date`	Start and end date of analyzed period of time. Format should be "yyyy-mm-dd". First and last date will be included!
`n_min`	Minimum number of times an individual has to be recorded (Individual + NN) to be considered present. If recorded < n_min for 3 month in row, considered as absent (including the first month considered)
`details`	Provide details for each individual and each month (default FALSE)

Note that estimating the presence for short periods of time can be diffent from estimates from longer periods of time. Information what happens before or after the specified period of time is unknown and the function assumes that preceding and following month have a count of n_min. Ideally include 2 months before and 2 months after each observation period. (Note to myself: this could also be included in the function.)

Default is that individuals are considered absent if recorded for less than n_min (default 5) times per month for 3 months in a row

urskalbitzer/daginR documentation built on Jan. 21, 2020, 1:26 a.m.