Dear Mahbub
Thanks a lot for the help.
----- Original Message ----
From: Mahbub Latif <[EMAIL PROTECTED]>
To: Muhammad Azam <[EMAIL PROTECTED]>
Sent: Wednesday, October 15, 2008 12:30:13 PM
Subject: Re: [R] request: How can we ignore a component of list having no
element
try this,
junk <- sapply(x,function(i) !is.null(i))
y <- x[junk]
On Wed, Oct 15, 2008 at 11:23 AM, Muhammad Azam <[EMAIL PROTECTED]> wrote:
Dear friends
There is a list of arrays comprising different no of rows and columns even
sometimes NULL, such as [[2]] given below. How can we ignore [[2]] or others
like this in the complete list. Any help in this regard is needed. Thanks
[[1]]
[,1] [,2]
[1,] 3 1
[2,] 3 1
[3,] 3 1
[[2]]
NULL
[[3]]
[,1] [,2] [,3] [,4] [,5] [,6] [,7]
[1,] 3 1 0 0 0 0 0
[2,] 3 1 0 0 0 0 0
[3,] 3 1 0 0 0 0 0
[4,] 3 1 3 1 3 2 1
[5,] 3 1 3 1 3 2 1
[6,] 3 1 3 1 3 2 0
[[4]]
[,1] [,2] [,3] [,4]
[1,] 3 0 0 0
[2,] 3 1 3 3
[3,] 3 1 3 3
[4,] 3 1 3 0
OR
x1=c(1,2,3); x2=c(1,2,3,4,6); x3=c(); x=list(x1,x2,x3)
M.Azam
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--
A.H.M. Mahbub Latif
Assistant Professor
Applied Statistics
Institute of Statistical Research and Training
University of Dhaka, Dhaka 1000, Bangladesh
web : http://www.isrt.ac.bd/mlatif
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