From: Christoph Scherber <Christoph.Scherber_at_uni-jena.de>

Date: Fri 14 Oct 2005 - 18:39:11 EST

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Fri Oct 14 18:46:12 2005

Date: Fri 14 Oct 2005 - 18:39:11 EST

Dear R users,

Suppose I have 2 parts of a dataframe, say

**ABCD
**

2143

3245

2154

(the real dataframe is 160 columns with each 120 rows)

and I want to multiply every element in [,A:B] with every element in [,C:D]; What is the most elegant way to do this?

I´ve been thinking of converting [,A:B] to a matrix, and then multiplying it with the inverse of [,C:D]; would that be correct?

The result should look like

E;F

8;3

12;10

10;4

Thanks very much for any suggestions

Christoph

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Fri Oct 14 18:46:12 2005

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