Re: [R] More elegant multiplication or division of a data frame with avector

From: Greg Snow <Greg.Snow_at_imail.org>
Date: Sat, 22 Mar 2008 09:06:20 -0600

> sweep( rawdata, 2, sens, '/' )
 

hope this helps,  


From: r-help-bounces_at_r-project.org on behalf of Tribo Laboy Sent: Sat 3/22/2008 8:21 AM
To: r-help_at_r-project.org
Subject: [R] More elegant multiplication or division of a data frame with avector

Hello,

I am importing some raw voltage multichannel measurements into an R data frame. I need to scale each column with the respective sensitivity for that channel. I figured how to do it, but I am curious if there isn't a more elegant way.

Now I start with something like this:

rawdata <- data.frame(rbind(c(1,2,3), c(4,5,6))) sens <- c(2,4,6)

and I do this:
data <- as.data.frame(t(t(rawdata)/sens))

Any suggestions?

Cheers,

TL



R-help_at_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.

        [[alternative HTML version deleted]]



R-help_at_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. Received on Sat 22 Mar 2008 - 15:10:39 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Sun 23 Mar 2008 - 10:30:23 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive