[R] Subsetting a list

[Huntsinger, Reid]

You have to use "[" instead of "[[" to return a sub-list.

Reid Huntsinger

-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Dennis Fisher
Sent: Tuesday, October 18, 2005 10:12 AM
To: r-help at stat.math.ethz.ch
Subject: [R] Subsetting a list


Colleagues,

I have created a list in the following manner:
     TEST    <- list(c("A1", "A2"), c("B1", "B2"), c("C1", "C2"))

I now want to delete one element from the list, e.g., the third.  The  
command
     TEST[[3]]
yields (as expected):
     [1] "C1" "C2"

The command
     TEST[[-3]]
yields:
     Error: attempt to select more than one element

How can I accomplish delete one or more elements from this list?

I am running R2.2.0 on a Linux platform.

Dennis

Dennis Fisher MD
P < (The "P Less Than" Company)
Phone: 1-866-PLessThan (1-866-753-7784)
Fax: 1-415-564-2220
www.PLessThan.com



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