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...10 0.37 0.1960 0.205 I want to sample 3 values from each row. One way to do this follows: index <- 1:ncol(probs) for(i in 1:nrow(probs)){ ## gets the indexes of the values chosen sample(index, size = 3, replace = TRUE, prob = probs[i, ]) } Is there a another way to do this? Thanks! Dan Gerlanc -- Daniel Gerlanc Williams College '07

...ut it appears to provide similar OO features to Java. Because it allows references, it would seem to provide the features I'm looking for from both the S4 and functional approaches. Any comments or suggestions on these different approaches would be appreciated. Thank you. Sincerely, Daniel Gerlanc

...c("y", "z") One way to do this follows: left.hand.side <- unlist(dimnames(attr(terms(a.formula), "factors"))[1]) right.hand.side <- unlist(dimnames(attr(terms(a.formula), "factors"))[-1]) Is there a better or cleaner way to do this? Thanks! Daniel Gerlanc Williams College '07

Why when I assign 0 to an element of an integer vector does the type change to numeric? Here is a particularly perplexing example: > v <- 0:10 > v [1] 0 1 2 3 4 5 6 7 8 9 10 > class(v) [1] "integer" > v[1] <- 0 > class(v) [1] "numeric" #!! > -- View this message in context:

Why when I assign 0 to an element of an integer vector does the type change to numeric? Here is a particularly perplexing example: > v <- 0:10 > v [1] 0 1 2 3 4 5 6 7 8 9 10 > class(v) [1] "integer" > v[1] <- 0 > class(v) [1] "numeric" #!! > -- View this message in context:

...cts of class "formula" for the left and right hand sides of the formula. To get the right hand side or left hand side I wrap one of these method calls in a call to "all.vars". Is there a better way to get the left or right hand side of the formula, or is this it? Thanks! Dan Gerlanc Williams College