[R] Adding a numeric to all values in the dataframe

[Bill.Venables at csiro.au]

Oops

The first line of my template should use data.matrix() rather than data.frame()

data.matrix() is guaranteed to return a numerical matrix from a data frame, making arithmetic always possible.

Bill Venables.

________________________________________
From: Venables, Bill (CMIS, Dutton Park)
Sent: 20 May 2011 14:30
To: 'Ramya'; 'r-help at r-project.org'
Subject: RE: [R] Adding a numeric to all values in the dataframe

For that kind of operation (unusual as it is) work with numeric matrices.  When you are finished, if you still want a data frame, make it then, not before.

If your data starts off as data frame to begin with, turn it into a matrix first.  E.g.

myMatrix <- data.frame(myData)
myMatrix2 <- myMatrix + 2
myData2 <- data.frame(myMatrix2)

Bill Venables.

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Ramya
Sent: Friday, 20 May 2011 1:54 PM
To: r-help at r-project.org
Subject: [R] Adding a numeric to all values in the dataframe

Hi there

I just want to add 2 to all the values in dataframe.

I tried using sapply but it seem to die all the time.

Any help would be appreciated.

Thanks
Ramya

--
View this message in context: http://r.789695.n4.nabble.com/Adding-a-numeric-to-all-values-in-the-dataframe-tp3537594p3537594.html
Sent from the R help mailing list archive at Nabble.com.

______________________________________________
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.