Full_Name: Jeff Schenck Version: 2.6.2 (signal v. 0.5) OS: Windows XP Submission from: (NULL) (128.107.248.220)
The "filter" function in the package "signal" does not properly handle recursive filters with only two feedback taps. I looked at the source code in filter.R. There is a line that says "if (length(a) > 2)" that I think should have ">=". I tried it that way and it seems to work fine. FYI... My test filter was a DC notch: b <- c(1, -1) a <- c(1, -0.95) y <- filter(b, a, x) Thanks, Jeff Schenck ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
