Hi, Try ?split() If `dat1` is the dataset: lst1 <- split(dat1,dat1$ID) lst1$an1 # ID V1 mean SD SE #1 an1 5 72.21719 22.27118 9.092172 #2 an1 6 100.00000 NA NA
lst1$an2 # ID V1 mean SD SE #3 an2 5 79.27999 25.08938 10.2427 #4 an2 6 100.00000 NA NA A.K. I have a data frame with an ID column and multiple IDs with rows of data that correspond to them. I need to subset the data frame such that each ID becomes its own data frame, and the name of the data frame should be its ID. I have quite a few IDs so doing this one subset at a time would be very tedious, but I have not been able to figure out how to loop it. I read about using write.table in a for loop to generate multiple excel files, but I want these data frames to remain in R. Here is a small example of my data frame (called "data"). ID V1 mean SD SE an1 5 72.21719 22.27118 9.092172 an1 6 100.00000 NA NA an2 5 79.27999 25.08938 10.242698 an2 6 100.00000 NA NA after subseting it, I want to be able to enter print(an1) and get ID V1 mean SD SE an1 5 72.21719 22.27118 9.092172 an1 6 100.00000 NA NA similarly, if I enter print(an2) I should get ID V1 mean SD SE an2 5 79.27999 25.08938 10.242698 an2 6 100.00000 NA NA I've looked around online, but I haven't been able to find the answer. Thanks for the help. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
