This function selects and delete a section of data describing a time wave. Original section and section after deletion can be plotted as oscillograms for comparison.
deletew(wave, f, from = NULL, to = NULL, choose = FALSE, plot = FALSE,
marks = TRUE, output = "matrix", ...)an R object.
sampling frequency of wave (in Hz). Does not need to be specified if embedded in wave.
start position (in s).
end position (in s).
logical, if TRUE start (=from) and end (=to)
points can be graphically chosen with a cursor on the oscillogram.
logical, if TRUE returns an oscillographic plot of original
and cut sections (by default FALSE).
logical, if TRUE shows the start and end mark on the plot
(by default TRUE).
character string, the class of the object to return, either "matrix", "Wave", "Sample", "audioSample" or "ts".
other oscillo graphical parameters.
If plot is FALSE, a new wave is returned. The class
of the returned object is set with the argument output.
If plot is TRUE returns a two-frame plot with both
original and resulting sections.
# NOT RUN {
# deletion a 0.4 s section in a bird song
data(tico)
a<-deletew(tico,f=22050,from=0.5,to=0.9)
oscillo(a,22050)
# a direct way to see what has been cut
deletew(tico,f=22050,from=0.5,to=0.9,plot=TRUE)
# }
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