Reformat Signal Data

Description

Produce sound x microphone matrix, possibly with sound covariates as extra columns.

Usage

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signalmatrix(object, noise = FALSE, recodezero = FALSE,
    prefix = "Ch", signalcovariates = NULL, names = NULL)

Arguments

object

object inheriting from secr class ‘capthist’

noise

logical; if TRUE, noise is extracted instead of signal

recodezero

logical; if TRUE zero signals are set to NA

prefix

character value used to form channel names

signalcovariates

character vector of covariate names from signalframe to add as columns

names

character vector of column names

Details

This function extracts signal or noise data from a capthist object, where it is stored in the ‘signalframe’ attribute, as a more natural sound x microphone table. There is no equivalent replacement function.

The signalcovariates argument may be used to specify additional columns of the signal frame to collapse and add as columns to the right of the actual signal data. Ordinarily there will be multiple rows in signalframe for each row in the output; the covariate value is taken from the first matching row.

If names is not provided, column names are constructed from the detector names. If the length of names is less than the number of columns, simple numerical names are constructed.

Value

A dataframe with dim = c(n,K+j) where n is the number of separate sounds, K is the number of microphones, and j is the number of covariates (by default j = 0).

See Also

ovensong

Examples

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## use 'secr' ovenbird data
signalmatrix(signalCH)

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