sincfilter function

A function for sinc-interpolation

Performs sinc interpolation for a equidistant time series x

to times t.

sincfilter(t, x, wr=8)

Arguments

• t: vector of new time points
• x: observed time series at times 1:length(x).
• wr: determines truncation of series expansion

Returns

a vector of interpolated values of the time series at time points given in t.

Author(s)

Joerg Polzehl polzehl@wias-berlin.de

See Also

slicetiming

Examples

x <- 1:107
  y <- rnorm(x)
  z <- sincfilter(seq(1,107,.01),y)
  plot(x, y, ylim=range(y,z))
  lines(seq(1,107,.01),z,col=2)