> Suppose I have the following matrix which is a constant matrix I've copied

> from some other document:

>

> 1.2 3.4 1.4 ...

> 2.3 3.7 2.6 ...

> ...

> How do I make it into a matrix or array in R?

> What is the fastest way of initializing a constant matrix with this

> copy/pasted values?

you cannot just paste it, you have to adapt it either like this

x <- matrix( c( 1.2, 3.4, 1.4,

2.3, 3.7, 2.6 ),

nrow = 2, byrow = TRUE)

or like this:

x <- rbind( c( 1.2, 3.4, 1.4 ),

c( 2.3, 3.7, 2.6 ) )

The second is closer to ML's x = [1,2 3.4 1.4;2.3 3.7 2.6] but the

first is probably the more popular/recommended approach. If it's a

large matrix that you don't want to adapt manually I think the only

way is to go via an ascii text file.

I see that you come from Matlab and that you have asked some rather

basic questions. I really recommend you, that you read the manuals (as

indicated). And do read them 2 or 3 times as they are much denser than

the Matlab manuals.

If you are not able to attend a course (which IMHO is the best way to

learn R) I'd buy a book.

(

http://www.r-project.org/doc/bib/R-publications.html). Maybe the

"John Verzani. Using R for Introductory Statistics" or "Uwe Ligges.

Programmieren mit R" could help you.

Best regards,

Hans-Peter

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