It would help if you supplied some code for us to see what you have tried.
However something like this would presumably give you the sample data sets
--note only n=100 in the example.
mymat - matrix(NA, ncol= 100, nrow= 100)
for (n in 1: 100) {
mymat[,n] - sample(c(0,1), 100, replace = TRUE)
}
mymat
John Kane
Kingston ON Canada
-Original Message-
From: baile...@ohsu.edu
Sent: Thu, 19 Jul 2012 14:17:43 -0700 (PDT)
To: r-help@r-project.org
Subject: [R] Creating Multiple Repeating samples and Cross Correlating
them.
I'm having a lot of trouble getting this done and nothing I've written
has
been remotely successful. Basically I have about 64 binary data sets
stored
as vectors, with 72900 entries in each. I am not very familiar with cross
correlations, but I was advised that I should create 1000 randomized date
sets (used sample() for that) to use as a control, then compare the cross
correlation of my real data sets to the controls. First of all I am
having
trouble creating 1000 different sample()'s of the same vector, and then I
am
not all too sure how to cross correlate them Nothing seems to produce
what I
want, all I get are copies of the same sample() of the vector repeated
over
and over. Please Help?
--
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