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Hi everyone, I've got a matrix data with 20 variables (V1, V2, V3, ...) and 215 rows (observations). I'm interested to read only the first and second variables using "read.table" function. How can I do? Thanks in advance...
Hi everyone, I 'm building a function, in the middle it controls the sign of a variable x. If x < 0 the function write a warning (Error: negative value!). At this point I want the function stops without execute the...
Hi, I've got the following code: p <- 0.34 pb <- p*100 pr <- (1-p)*100 A <- rep(0,pb) # a vector with 34 "zeros" B <- rep(1,pr) # a vector with 66 "ones" Now if I type length...
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