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...bles. This works fine in the bit working out number of elements in each variable. In the print(sprintf("OK with %s and %s\n", var1, var2)) line I would like var1 and var2 to be magically substituted with a string containing the name of var1 and name of var2. Thanks in advance Paolo haveSameLength <- function(var1, var2) { if (length(var1)==length(var2)) { print(sprintf("OK with %s and %s\n", var1, var2)) } else { print("Problems!!") } } [[alternative HTML version deleted]]

Hello, I have a multi-year dataset (see below) with date, a data value and a flag for the data value. I want to find the monthly median for each month in this dataset and then plot it. If anyone has suggestions they would be greatly apperciated. It should be noted that there are some dates with no values and they should be removed. Thanks Emily > print ( str(data$flow$daily) )