[R] Random number
partha_bagchi at hgsi.com
Wed Oct 27 19:14:33 CEST 2004
Let's say x is of size 100.
x <- rnorm(100)
x[sample(1:100,10)] <- NA
Kunal Shetty <kshe4 at student.monash.edu>
Sent by: r-help-bounces at stat.math.ethz.ch
10/27/2004 12:59 PM
To: r-help at stat.math.ethz.ch
Subject: [R] Random number
Dear R- User
I created two random number sets using rnorm function and calcuted their
respective means. However now I would like to randomly
replace some values with NA. Thus create my own test data.
Any help or suggestions on this ?
Also wanted to confirm when multiplying two random number vectors x am y
by matrix..is this how i do it.
A is the matrix
z <- c(x,y) # x and y the two set of vectors
w <- A%*%Z # each element in each vector multipled by the matrix .
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