Hi Henrique,

Lot of thanks for your advice which is a little complicate to me.  It involves 
multiple R commands:

> d <- data()
> ne <- new.env()
> data(list = grep("\\(", d$results[,'Item'], value = TRUE, invert = TRUE), envir 
>= ne)
> out <- eapply(ne, names)
> names(which(lapply(lapply(out, '%in%', c("Run", "conc", "density")), sum) == 
>3))
[1] "DNase"
> DNase
    Run        conc density
1     1  0.04882812   0.017
2     1  0.04882812   0.018
3     1  0.19531250   0.121
4     1  0.19531250   0.124
.......


It works for me.

grep - is simliar to sh command "grep, egrep, fgrep, rgrep - print lines 
matching a pattern"
which - differs from sh command "which - locate a command"

Wonderful !!!

B.R.
Stephen L





________________________________
From: Henrique Dallazuanna <wwwhsd@gmail.com>

Cc: r-help@r-project.org
Sent: Fri, November 26, 2010 12:35:23 AM
Subject: Re: [R] About searching criteria

Try this:

d <- data()
ne <- new.env()
data(list = grep("\\(", d$results[,'Item'], value = TRUE, invert = TRUE), envir 
= ne)
out <- eapply(ne, names)
names(which(lapply(lapply(out, '%in%', c("Run", "conc", "density")), sum) == 3))






Hi folks,
>
>I need to search the dataset on data with name on heading;
>Run conc density
>
>
>I look at ??help.search and could not resolve;
>
>help.search(pattern, fields = c("alias", "concept", "title")
>
>What shall I replace "pattern"?
>
>I suppose replacing "alias", "concept", "title" with "Run", "conc", "density" ?
>
>Please help.  TIA
>
>B.R.
>Stephen L
>
>
>
>______________________________________________
>R-help@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.
>


-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O



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