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Dear All! If I try to compare the attributes of two objects, I find a surprising behaviour of attr.all.equal(). With identical attributes I receive the answert NULL. If the attributes differ, the answer is as expecxted and differences are shown. all.equal(attributes(), attributes()) instead returns TRUE, if attributes are equal. See example: v <- 1:5 attr(v, 'testattribute') <- 'testattribute v' v_c <- v attributes(v) $testatt...

Hello all, given two vectors X and Y I'd like to receive a vector Z which contains, for each element of X, the index of the corresponding element in Y (or NA if that element isn't in Y). Example: x <- c(4,5,6) y <- c(10,1,5,12,4,13,14) z <- findIndexIn(x, y) z [1] 5 3 NA 1st element of z is 5, because the 1st element of x is at the 5th position in y 2nd element of z is 3,

Dear experts, I have to generate 1000 transitions of a discrete time Markov Chain and then give and estimation of the equilibrium distribution. I know the transition matrix. 0.3 0.7 0 0.2 0.5 0.3 0 0.4 0.6 Do you know how to do it with R? Thanks a lot! Estefania [[alternative HTML version deleted]]

Hi, does anybody know if TMail supports nested multipart messages? I read a changelog that indicates so (http://dev.rubyonrails.org/svn/rails/trunk/actionmailer/CHANGELOG), but I haven''t been able to get it working so far. Maybe I am doing something wrong here? I attached the sample mail. Here is the code to parse it: require File.dirname(__FILE__) +