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Hello, Did anyone on the list already write code for 'rgamma' or 'dgamma' when the domain is restricted to the integers? Presumably this involves mapping intervals of the form (3,4] onto 4, etc, and getting the appropriate probabilities. Thanks...

Hello, What is the rule R uses for lexicographical sort. For example, sort("b","a") returns [1] "a" "b" sort("b", " ") returns [1] " " "b" which seems to imply a space character has priority. But sort("jam on", "jambon") returns [1...

Hello, Is there an R (or S) to C/C++ translator in the spirit of the one found in Matlab? [I would like to avoid re-writing my entire R code in C.] If not, are there any plans to...

Dear R users, I get the following (I think puzzling) result when doing the following: > a <- list(3,4,5) > a[[2]] <- NULL > a [[1]] [1] 3 [[2]] [1] 5 I would have expected the result to be: [[1]] [1...

Dear R users, I get the following (I think puzzling) result when doing the following: > a <- list(3,4,5) > a[[2]] <- NULL > a [[1]] [1] 3 [[2]] [1] 5 I would have expected the result to be: [[1]] [1...

Dear R users, I am using R version 2.0.1 (2004/11/15) on an i386-pc-mingw32 platform. I encounter the following problem while using cumsum: > a <- rep(0.01, 100) > b <- cumsum(a) > sum(a) == 1 [1...

Dear R-users, Is there a preferred method for testing whether a real symmetric matrix is positive definite? [modulo machine rounding errors.] The obvious way of computing eigenvalues via "E <- eigen(A, symmetric=T, only.values=T)$values" and returning...

Hello, Is there any logistic (or other) reason why the function sample, with usage sample(x, size, replace = FALSE, prob = NULL) does not have a default method when length(x) is equal to 1 but x is non-integer? The...