[R] passing arguments to FUN in lapply

[Dimitris Rizopoulos]

an indirect solution is the following:

lapply(seq(along=denlist), function(i) plot(denlist[[i]], 
main=paste("var", i)))

I hope it helps.

Best,
Dimitris

----
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/16/336899
Fax: +32/16/337015
Web: http://www.med.kuleuven.ac.be/biostat/
     http://www.student.kuleuven.ac.be/~m0390867/dimitris.htm

----- Original Message ----- 
From: "Pingping Zheng" <pingping.zheng at lancaster.ac.uk>
To: <r-help at stat.math.ethz.ch>
Sent: Friday, March 18, 2005 12:40 PM
Subject: [R] passing arguments to FUN in lapply


> Suppose I have a nx2 matrix of data, X, the following code generate
> density estimation for each column and plot them
>
> denlist <- apply(X, 2, density)
> par(mfrow=c(1,2))
> lapply(denlist, plot)
>
> Does anyone know how to change the main title of each density plot
> to "var 1", "var 2" by passing optional argument "main"? I've tried
>
> lapply(denlist, plot, main=c("var 1", "var 2"))
> which generates two same titles "var 1/var 2" and "var 1/var 2"
>
> lapply(denlist, plot, main=list("var 1", "var 2"))
> which generates two same titles "var 1"
>
> Both are not I want.
>
> -- 
> Pingping Zheng
> Department of Mathematics and Statistics
> Fylde College
> Lancaster University
> Lancaster LA1 4YF
> UK
>
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