Re: [R] Generation of missiing values in a time serie...

From: Gabor Grothendieck <ggrothendieck_at_gmail.com>
Date: Wed 14 Dec 2005 - 03:33:47 EST

Please provide a reproducible example. Note that dput(x) will output an R object in a way that can be copied and pasted into another session.

On 12/13/05, Alvaro Saurin <saurin@dcs.gla.ac.uk> wrote:
>
> On 13 Dec 2005, at 13:08, Gabor Grothendieck wrote:
>
> > Your variable mat is not a matrix; its a data frame. Check it with:
> >
> > class(mat)
> >
> > Here is an example:
> >
> > x <- cbind(A = 1:4, B = 5:8)
> > tt <- c(1, 3:4, 6)
> >
> > library(zoo)
> > x.zoo <- zoo(x, tt)
> > x.ts <- as.ts(x.zoo)
>
> Fixed, but anyway it fails:
>
> > h_types <- list (0, 0, NULL, NULL, 0, 0, 0, 0, 0)
> > h_names <- list ("time", "flow", "seq", "ts", "x", "rtt", "size")
>
> > pcks_file <- pipe ("grep ' P ' server.dat", "r")
> > pcks <- scan (pcks_file, what = h_types,
> comment.char = '#', fill = TRUE)
>
> > mat_df <- data.frame (pcks[1:2], pcks[5:9])
> > mat <- as.matrix (mat_df)
> > colnames (mat) <- h_names
>
> > class (mat)
> [1] "matrix"
>
> > z <- zoo (mat, mat [,"time"])
>
> > z
> > z
> time flow seq ts
> x rtt size
> 1.0009 1.000893 0.000000 0.000000 1.000893
> 1472.000000 0.000000 1472.000000
> 1.5145 1.514454 0.000000 1.000000 1.514454
> 2944.000000 0.513142 1472.000000
> 2.0151 2.015093 0.000000 2.000000 2.015093
> 2944.000000 0.513142 1472.000000
> 2.515 2.515025 0.000000 3.000000 2.515025
> 4806.000000 0.504488 1472.000000
> 2.822 2.821976 0.000000 4.000000 2.821976
> 5730.000000 0.496728 1472.000000
> [...]
>
> > as.ts (z)
> Error in if (del == 0 && to == 0) return(to) :
> missing value where TRUE/FALSE needed
>
> Any idea? Thanks for your help.
>
> Alvaro
>
>
> --
> Alvaro Saurin <alvaro.saurin@gmail.com> <saurin@dcs.gla.ac.uk>
>
>
>
>



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