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Hi, I wanted to calculate the age of people in my dataset by subtracting the individual's date of birth from their intake into a program. After several hours, searches of help archives, and the downloading of lubiridate, I have had no luck with this. Below is the code I used. > intakeDS$DOB <- as.character(intakeDS$DOB) > intakeDS$DOB <- as.Date(intakeDS$DOB,

Hi, I'm trying to load .csv file into R (3790 by 30). I'm having an odd difficulty. After I type: read.csv("niwage.csv", header = TRUE) the data appears on the screen. The last thirty or so observations appear on the screen and they have been read in correctly. However, when I type: dim(data) I see: NULL This seems odd to me--R seems to be recognizing the data but not

I am new to R and am having difficulty merging 2 data sets, both of which have the same 30 variables and about 2,000 records. I've looked high and low—Paul Johnson's help page, through some of the 5,420 (yikes!) results for “merge” on the R list archives, and google searches—and I'm getting nowhere, so I thought I'd ask. When I try to merge by the ID variable: >