extract.data: Get data on an individual species

In btorobrob/cesr: Trend analysis of Constant Effort Site ringing data

Get data on an individual species

Description

Creates dataframes with capture data for adult and juvenile birds from a CES object created by readces

Usage

extract.data(cesdata, species=0, plots=NULL, min.yrs=1)

Arguments

cesdata	a CES object created by readces.
species	Euring species code (including the final zero which would indicate race).
plots	an object containing plot coverage data created by extract.coverage.
min.yrs	sites covered in fewer than min.yrs will be ignored.

Value

A list of up to four items

spp	Euring species code
spp.name	Name of the species in whichever language has been set by setceslang

Either or, more usually, both of the following may be present

ad.data	data frame with summary of adult captures
jv.data	data frame with summary of juvenile captures

Author(s)

Rob Robinson

Examples

data(ukdata)
plots <- extract.coverage(ukdata)
robin.dat <- extract.data(ukdata, species=10990, plots=plots)

btorobrob/cesr documentation built on June 9, 2025, 5:39 a.m.