  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” 


		
---------------------------------

	[[alternative HTML version deleted]]


