[R] split data frame and manipulate

[Mathew Brown]

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 suggest a way to do this. I want to be able to fully 
manipulate and plot variables from each of the resulting data frames.

Thanks,


-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: datuh.dat
URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20110526/18a48802/attachment.pl>