I want to thank everyone for their comments and suggestions. P. Burns'
S Poetry I think will be a lot of help and I thought it was really
poetry:). So will the other references that were provided by I believe
Mr Kane. The other replies provided me some great insights.
If I understand R uses
Have you tried help([), which gives a good explanation.
On 24/10/06, Joe W. Byers [EMAIL PROTECTED] wrote:
Hi all,
I would greatly appreciate some help understanding how R references
arrays, matrices, lists, and objects using [[]] and []. I have read the
R guides and several tutorials but
David,
Yes, I did. I just still do not get it. That is why I ask here.
Hoping someone knew a step by step guide that I could look at. My trial
and error approach takes me hours some days. I currently move most
things in and out of data.frames where I can name the columns and
reference
Well, as I understand it, with a list [] doesn't return the actual
contents of that element of the list, whereas [[]] does. Compare, for
example rnds[1] + 1 with rnds[[1]] + 1. So, with a list you have to
use the double bracket notation to get to the actual contents of that
element of the list,
Thank you so very much. I can try this on my own examples.
Much appreciated.
Joe
David Barron wrote:
Well, as I understand it, with a list [] doesn't return the actual
contents of that element of the list, whereas [[]] does. Compare, for
example rnds[1] + 1 with rnds[[1]] + 1. So, with a
--- Joe Byers [EMAIL PROTECTED] wrote:
David,
Yes, I did. I just still do not get it. That is
why I ask here.
Hoping someone knew a step by step guide that I
could look at. My trial
and error approach takes me hours some days. I
currently move most
things in and out of
On Tue, 24 Oct 2006, Joe W. Byers wrote:
following code produces a 5 element list of 2X5 random numbers that I
then convert to a 2X5X5 matrix.
cov-matrix(c(.4,-.1,-.1,.3),nrow=2,ncol=2)
rnds-NULL;
for (i in 1:5){
t1-rnorm(5,cov)
t2-rnorm(5,cov)
t3-rbind(t1,t2)
