signal-internal | R Documentation |

Internal or barely commented functions not exported from the Namespace.

# MOSTLY MATLAB/OCTAVE COMPATIBLE UTILITIES fractdiff(x, d) # Fractional differences postpad(x, n) # pad \code{x} with zeros at the end for a total length \code{n} # truncates if length(x) < n sinc(x) # sin(pi * x) / (pi * x) # MATLAB-INCOMPATIBLE UTILITIES logseq(from, to, n = 500) # like \code{linspace} but equally spaced logarithmically # MAINLY INTERNAL, BUT MATLAB COMPATIBLE mkpp(x, P, d = round(NROW(P)/pp$n)) # used by \code{pchip} ## Construct a piece-wise polynomial structure from sample points x and ## coefficients P. ppval(pp, xi) # used by \code{pchip} ## Evaluate piece-wise polynomial pp and points xi. ncauer(Rp, Rs, n) # used by \code{ellip} ellipke(m, Nmax) # used by \code{ellip} cheb(n, x) # nth-order Chebyshev polynomial calculated at x # used by \code{chebwin}

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