When used with a matrix, the resample() function takes two /optional /arguments. Is it correct to write (for some matrix X) matrix bootsample = resample(X,,m) namely, "skip" in this way the first optional argument, while at the same time specifying that the length of the bootstrap sample should be smaller than the original? If not, what would be the proper way to write this command, when we do /not/ want "resampling by moving blocks", but we /do/ want to do an "m out of n" bootstrap? -- Alecos Papadopoulos PhD Athens University of Economics and Business web: alecospapadopoulos.wordpress.com/ skype:alecos.papadopoulos