[R] Problems with data.matrix

Adaikalavan Ramasamy gisar at nus.edu.sg
Sat Mar 29 07:53:39 CET 2003

unlist() ... 

x <- list(NULL)
x <- list( c(1,2), c(3,4), c(5,6), c(7,8) )
y <- unlist(x)
z <- matrix( y, nrow=2 ) 

-----Original Message-----
From: Laura Gross [mailto:laura at bayesian-bay.freeserve.co.uk] 
Sent: Saturday, March 29, 2003 12:44 AM
To: r-help at stat.math.ethz.ch
Subject: [R] Problems with data.matrix

Dear List

I have what is probably a simple problem that I just can't seem to

I have a data list which is in the form: lev2.list

        1      2
      number number
        3      4
      number number

etc down to [[1100]]

I'm wanting to convert this to a data.matrix so I can plot the values,
however, when I use new<-data.matrix(lev2.list), I get a data matrix
that reads:

[1, ] Numeric, 2
[2, ] Numeric, 2

with every line down to [1100, ] reading 'Numeric,2'

Why am I getting this output? Why will R not display the numbers in a

Many thanks for any help

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