search for: datuh

Hello, I would like to split the attached data frame based on the DATE variable. I'm having a real problem doing this. I am able to split iso<-read.table(datuh.dat, header=TRUE, sep="", dec=".") #load mylist=split(iso,iso$DATE) #split str(mylist) #result seems a bit odd However, after splitting I'm not able to call up certain variables of the two lists. For instance, this does not work mylist$2011-05-25 Could anyone point sugge...