[R] Automatic routine - help

BXC (Bendix Carstensen)
Wed, 23 Jun 2004 09:33:00 -0000

for (j in 1:n) df[,j] <- pmin( pmax( df[,j], 0 ), 1 )

should do the job.

Bendix Carstensen

----------------------
Bendix Carstensen
Senior Statistician
Steno Diabetes Center
Niels Steensens Vej 2
DK-2820 Gentofte
Denmark
tel: +45 44 43 87 38
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bxc at steno.dk
www.biostat.ku.dk/~bxc
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> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Monica
> Palaseanu-Lovejoy
> Sent: Wednesday, June 23, 2004 11:07 AM
> To: r-help at stat.math.ethz.ch
> Subject: [R] Automatic routine - help
>
>
> Hi,
>
> I would like to write a little automatic routine in R, but i am a too
> much of a beginner for that. I will appreciate any help
> regarding this
> particular problem.
>
> Let's suppose I have a data.frame with j columns (from 1 to n) and i
> rows (from 1 to p). I would like to write a procedure which reads
> every column j (j from 1 to n) and compare each value with the
> interval [0,1]. If z(i,j) is less than 0, then replace z(i,j)
> with 0. If z(i,j)
> is greater than 1, then replace z(i,j) with 1. If z(i,j) is
> inside the
> interval [0,1] then don't change. In the end I would like to have a
> new data.frame with the new values.
>
> I am not sure how complicated or long such a procedure might be,
> so I will be very grateful for any help.
>
> Thank you in advance,
>
> Monica
>
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