seewave (version 1.5.5)

cutw: Cut a section of a time wave

Description

This function selects and cuts a section of data describing a time wave. Original and cut sections can be plotted as oscillograms for comparison.

Usage

cutw(wave, f, from = NULL, to = NULL, choose = FALSE,
plot = FALSE, marks = TRUE, Sample = FALSE,...)

Arguments

wave

a vector, a matrix (first column), an object of class ts, Sample (left channel), or Wave (left channel).

f

sampling frequency of wave (in Hz). Does not need to be specified if wave is an object of class ts, Sample, or Wave<

from

start mark (in s).

to

end mark (in s).

choose

logical, if TRUE start (=from) and end (=to) points can be graphically chosen with a cursor on the oscillogram.

plot

logical, if TRUE returns an oscillographic plot of original and cut sections (by default FALSE).

marks

logical, if TRUE shows the start and end mark on the plot (by default TRUE).

Sample

if TRUE and plot is FALSE returns an object of class Sample

...

other oscillo graphical parameters.

Value

• If plot is FALSE, a new wave is returned as a one-column matrix or as a Sample object if Sample is TRUE.

Details

If plot is TRUE returns a two-frame plot with both original and cut sections.

See Also

oscillo, addsilw,deletew, fadew,mutew,pastew,revw, zapsilw

Examples

# a 0.4 s section in a bird song
data(tico)
a<-cutw(tico,f=22050,from=0.5,to=0.9)
oscillo(a,22050)
# a direct way to see what has been cut
cutw(tico,f=22050,from=0.5,to=0.9,plot=TRUE)