I'd like to count the use of Tool A in a data set, but also want to include the zero use of Tool A. My data set example is as below; ID <- c(1,1,2,3,3,3,4,5,5,5) Tool <- c("A","B&...

I am trying to randomly replace 1000 NA values in a dataframe column with 0s. The column is composed only of NAs and 1s and it looks like this: Column 1 NA 2 1 3 NA 4 NA 5 NA 6 1 ...

I am pulling data from a spreadsheet and one of the columns has leading zeroes. The zeros get trimmed when the data comes in. I need the preceding zeroes for the data transfer. Also, I need the format...