From: r user <ruser2006_at_yahoo.com>

Date: Thu 05 Jan 2006 - 09:39:45 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 Thu Jan 05 10:25:52 2006

Date: Thu 05 Jan 2006 - 09:39:45 EST

> I am using R 2.1.1 in an windows XP environment.

*>
**> I have 2 dataframes, temp1 and temp2.
**>
**> Each dataframe has 20 variables (“cocolumns") and
**> 525 observations (“rows”). All variables are
**> numeric.
**>
**> I want to create a new dataframe that also has 20
**> columns and 525 rows. The values in this dataframe
**> should be the sum of the 2 other dataframe.
**>
**> (i.e. temp1$column 1+temp2$column1,
**> temp1$column2+temp2$column2, etc)
**>
**> What is the best/easiest way to accomplish this?
**>
**> Is I wish to "multiply" (instead of sum) the
**> columns, how do I?
**>
**> I tried:
**>
**> temp3<-as.matrix(temp1)+as.matrix(temp2)
**>
**> I get the following error message: “Error in
**> as.matrix(temp1) + as.matrix(temp2) :
**> non-numeric argument to binary operator”
**>
**>
**>
**> ---------------------------------
*

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 Thu Jan 05 10:25:52 2006

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