wpeR (version 0.1.0)

anim_timespan: Get dates of individuals first and last sample

Description

Takes data frame of all samples and returns the dates of individuals first and last sample. Besides that the functions determines if animal is dead based on predefined sample type eg. tissue.

Usage

anim_timespan(individual_id, sample_date, sample_type, dead = "Tissue")

Value

A data frame with four columns and one row for each individual_id. Returned data frame columns correspond to individual identification key (ID), date of first (FirstSeen) and last (LastSeen) sample of individual and logical (TRUE/FALSE) value that identifies if the individual is dead (IsDead).

Arguments

individual_id

Column in the dataframe of all samples containing individual animal identifier code. Defined as dataframe$column.

sample_date

Column in the dataframe of all samples containing the date of sample collection. Must be in Date format. Defined as dataframe$column.

sample_type

Column in the dataframe of all samples containing the data on the type (eg. scat, tissue, saliva) of particular sample. Defined as dataframe$column.

dead

Single value or vector of different lethal sample types. If no lethal samples are included in the sampledata the dead parameter can be set to FALSE (dead = FALSE). Defaults to "Tissue".

Examples

anim_timespan(
  individual_id = wolf_samples$AnimalRef,
  sample_date = wolf_samples$Date,
  sample_type = wolf_samples$SType,
  dead = c("Tissue")
)