extract.counts: Get species data from a CES datset
In btorobrob/cesr: Trend analysis of Constant Effort Site ringing data

extract.counts

R Documentation

Get species data from a CES datset

Extracts catch data for a particular species from a CES object, usually called through extract.data.

extract.counts(cesobj, species=0, age=0, plots=NULL)

`cesobj`	A dataframe containing CES data usually generated by /codereadces
`species`	Species for which to extract data. This should be a standard Euring numeric code, for example Turdus merula would be 11870 (note the last digit, to indicate race, should always be zero). If species=0, summarises catch total across all species.
`age`	Euring age code 3 for juveniles and 4 for adults, any other value is an error.
`plots`	An object indicating which sites were covered in each year. Normally this would be generated by `extract.coverage`, if it is absent the coverage data will be extracted silently.

A datatframe containing the number of birds caught at each site in each year. Usually with an identifier for the species to which the data refer.

Rob Robinson