search for: bag2

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2009 Jan 27
2
working with tables -- was Re: Mode (statistics) in R?
...eq(1,10),50,replace=TRUE)->bag Rgames> bag [1] 2 8 8 10 7 3 2 9 8 3 8 9 6 6 10 10 7 1 [19] 9 5 4 3 3 5 10 3 6 3 2 8 4 2 1 10 6 2 [37] 6 6 9 8 6 8 8 4 3 6 3 9 5 1 Rgames> names(which.max(table(bag))) [1] "3" I can then do Rgames> bag2<-bag[bag!=3] and repeat the which.max stuff. I came up with the following command to find the actual magnitude of the mode: Rgames> table(bag)->tbag Rgames> tbag bag 1 2 3 4 5 6 7 8 9 10 3 5 8 3 3 8 2 8 5 5 Rgames> tbag[dimnames(tbag)$bag=="3"]->...
2010 Jan 14
2
Fixed size permutations
I'm using functions to return a matrix of all permutations of a specified size from a larger list for predictor selection. For each predictor size I use a seperate function like this: bag2 <- function(n) { rl <- c() for (i1 in seq(n)) { for (i2 in seq(n)) { if (length(unique(c(i1,i2)))==1) {next} rl <- cbind(rl,matrix(c(i1,i2))) } } rl } bag3 <- function(n) { rl <- c() for (i1 in seq(n)) { for (i2...