for ( i in 23:0 ) { V <- vector [ 1 : i ] }

Quoting Rolf Turner:

(1) Learn something about R; don't just hammer and hope.  Read the
introductory manuals and scan the FAQ.

-- Bert

On Wed, Oct 24, 2012 at 5:25 AM, colaiutachambers

I'm used to run that on Matlab

for indice=1:23,

V=vector(1:indice)
end
that give me 23 vectors as output.

Why the same command on R  " for ( i in 23:0 )  { V <- vector [ 1 : i ] } "
returns one only vector?
How can I obtain the 23 vectors that I need ?

Thank you.





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______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

Bert Gunter
Genentech Nonclinical Biostatistics

Internal Contact Info:
Phone: 467-7374
Website:
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Hello,

Try the following.

lapply(1:23, function(i) 1:i)

As for why yuor code doesn't work, you're assigning 24 times a value to 
V, on loop exit only the last one is there. A correct way using loops 
would be


V <- list()
for(i in 1:23)
     V[[i]] <- 1:i


Beware that the last vector goes from 1 _down_ to 0.

And do read An Introduction to R, file R-intro.pdf in your R/doc directory.

Hope this helps,
Em 24-10-2012 13:25, colaiutachambers escreveu:

I'm used to run that on Matlab

for indice=1:23,

V=vector(1:indice)
end
that give me 23 vectors as output.

Why the same command on R  " for ( i in 23:0 ) 

{ V <- vector [ 1 : i ] } "

returns one only vector?
How can I obtain the 23 vectors that I need ?

Thank you.





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View this message in context: http://r.789695.n4.nabble.com/for-i-in-23-0-V-vector-1-i-tp4647306.html
Sent from the R help mailing list archive at Nabble.com.

______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

Thank you very much Rui.
I was in hurry because I'm working in a bank and on my master's degree
thesys at the same time.
I know Matlab, but they want I use R to price a convertible bond (I can't
get why...).
I read "An introduction to R" the last week-end and now I feel more
confortable.
This is an help section and was not looking for a good telling-off but I'm
sorry if I bothered somoone with my question.





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