I have a dataframe of numeric values with 30 rows and 7 columns. For each column, beginning at row 12 and down to row 30, I wish to calculate the rolling 12 row product. I.e., within each column, I wish to multiply all the values in row 1:12, 2:13, 19:30.
I wish to save the results as a new dataframe, which will have 19 rows and 7 columns. ______________________________________________ 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
