> 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 > > > > ---------------------------------
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