On Mon, Feb 9, 2009 at 4:57 PM, wrote:
>
> hi,
>
> I have some session data in a dataframe, where each session is recorded with
> a start and a stop date. Like this:
>
> session_start session_stop
> ===
> 2009-01-03 2009-01-04
> 2009-01-01 2009-01-05
> 2009-01-02
Try this:
> dateseq <- function(i) seq(DF[i, 1], DF[i, 2], 1)
> table(as.Date(unlist(lapply(1:nrow(DF), dateseq)), origin = "1970-01-01"))
2009-01-01 2009-01-02 2009-01-03 2009-01-04 2009-01-05 2009-01-06 2009-01-07
1 2 3 3 2 1 1
2009
hi,
I have some session data in a dataframe, where each session is recorded with a
start and a stop date. Like this:
session_start session_stop
===
2009-01-03 2009-01-04
2009-01-01 2009-01-05
2009-01-02 2009-01-09
A session is at least one day long. Now I want
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