R help - Jun 2004 - counting number of objects in a list

Dear R-users;

I am interested in getting the number of objects in a list, and have thus 
far been unsuccessful. Can you please help.

Thank you.


Vumani

Lists in the S language are like vectors, so length(mylist) would tell you
how many components there are in mylist.  Beware, though, that lists can
well be nested...

Andy
> From: Vumani Dlamini
> 
> Dear R-users;
> 
> I am interested in getting the number of objects in a list, 
> and have thus 
> far been unsuccessful. Can you please help.
> 
> Thank you.
> 
> Vumani

Vumani Dlamini wrote:
> Dear R-users;
> 
> I am interested in getting the number of objects in a list, and have 
> thus far been unsuccessful. Can you please help.
> 
> Thank you.
> 
> 
> Vumani
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! 
> http://www.R-project.org/posting-guide.html
?length

Uwe Ligges

you mean something like:

x <- list(a=1:10, b=matrix(rnorm(5*6), 5, 6), c=5)
length(x)

Best,
Dimitris

----
Dimitris Rizopoulos
Doctoral Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/16/396887
Fax: +32/16/337015
Web: http://www.med.kuleuven.ac.be/biostat/
     http://www.student.kuleuven.ac.be/~m0390867/dimitris.htm



----- Original Message ----- 
From: "Vumani Dlamini" <dvumani at hotmail.com>
To: <r-help at stat.math.ethz.ch>
Sent: Tuesday, June 08, 2004 2:22 PM
Subject: [R] counting number of objects in a list

> Dear R-users;
>
> I am interested in getting the number of objects in a list, and have
thus
> far been unsuccessful. Can you please help.
>
> Thank you.
>
>
> Vumani
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html