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2009 Dec 09
1
Bootstrapping in R
...ror trying to bootstrap from a matrix. The error message is "Error in sample(n, n * R, replace = TRUE) : element 2 is empty; the part of the args list of '*' being evaluated was: (n, R)" vv <- c(0.5,3.2,5.4,1.1,1.4,1.2,2.3,2.0) Reg <- matrix(data=vv, nrow = 4, ncol = 2) bootcoeff <- function(x){ coefficients(lm(x[,1]~x[,2]))[2]+1 } boot(Reg, bootcoeff) It is just an example, in reality I have a matrix in rows of which I have x and y for which I need to make a regression to find the slope coeff bootstrapping from rows. Thanks a lot for the help. [[alternative HTML ve...