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Returns T or F depending on whether the object is of class "spectral"
is.spectral(dat)
An R object
A single element logical vector: T or F
as.spectral
# NOT RUN { is.spectral(vowlax.dft.5) is.spectral(fric.dft) is.spectral(fric.dft$data) is.spectral(vowlax.dft.5[1,]) is.spectral(fric.dft[1,1]) # }
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