Hello, I want to bootstarp a sample, and I need table() for each sample taken, like if R=100, I need all 100 table(). It seems to mee that boot() works anly if you assing statistics, that gives you back one number, like mean. Although the ?boot/statistics says that it can be a vector containing statistics. table() gives an array, so it might work. Does anybody have an idea how? I konw it can be done by a loop and sample() function, but it not as fast as boot(). Another question, how can you get frequencies for sample values, like what table() does, but with reference to both the value itself and the corresponding frequencies. I would like to have those values in a matrix with 2 col. It is very troublesome to make it form what table() returns. Thanks for your help! Katalin ___ Katalin Csillery Division of Biological Sciences University of Montana, Missoula MT 59801 Phone: 406 243 6106, E-mail: csillery at selway.umt.edu ---------------------------------------------------- -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
boot&table
2 messages · Katalin Csillery, Vaidotas Zemlys
Hi,
I want to bootstarp a sample, and I need table() for each sample taken, like if R=100, I need all 100 table(). It seems to mee that boot() works anly if you assing statistics, that gives you back one number, like mean. Although the ?boot/statistics says that it can be a vector containing statistics. table() gives an array, so it might work. Does anybody have an idea how? I konw it can be done by a loop and sample() function, but it not as fast as boot().
I am not sure what do you want to do. Function boot needs data as vector, matrix, or data.frame. Boot does work with statistics, which gives back vector. Give more details, why can't you work with matrix or data.frame instead of table.
Another question, how can you get frequencies for sample values, like what table() does, but with reference to both the value itself and the corresponding frequencies. I would like to have those values in a matrix with 2 col. It is very troublesome to make it form what table() returns.
table2matrix <-
function (x) {
if (!is.table(x)) {
stop("I need table")
}
mm <- cbind(as.numeric(names(x)),x)
rownames(mm) <- NULL
mm
}
Or some other way, it is just an example. As you see, nothing very
troublesome.
Mpiktas
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