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 <[EMAIL PROTECTED]> <[EMAIL PROTECTED]>
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