On Thu, 19 Aug 2010, wyd...@msn.com wrote:
Hi, I have a dataset including monthly date from 1971-01-01 to
2009-01-01. The dates are character variables.
I would suggest to use a more suitable class for the index, such as
"yearmon" (if you only want to indicate the month anyway) or "Date" (if
Hi,
I have a dataset including monthly date from 1971-01-01 to 2009-01-01. The
dates are character variables.
I want to select the subsample from my original data, so I use
mydata3<-window(mydata,start="1972-02-01",end="2005-02-01"),
or mydata3<-window(mydata,
start=as.date("1972-02-01"),end=as
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