Hello, I have to vectors high and low on a time scale as follows time <- 1:5 low <- c(1, 2, 3, 4, 5) high <- c(5, 4, 3, 4, 4)
Now I'm searching for an elegant solution to know if a data point in time is inside the boundaries but not only on the predefined time points but continuous (e.g. time=2.5). For this the boundary points should be interpolated linearly. InBoundaries(t=2, y=1) => FALSE (too low) InBoundaries(t=2, y=2) => TRUE (on lower boundary) InBoundaries(t=2.5, y=3) => TRUE (between interpolation lines) InBoundaries(t=2.5, y=3.5) => TRUE (on upper interpolation line InBoundaries(t=2.5, y=3.51) => FALSE (above upper interpolation line) Thanks in advance for your ideas. Kind regards Martin [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.