HI, R-Users:
I got a questions. have been struggling so long time....
I have this data:
> m1$Year_Month
201009 201010 201011 201101 201102
> min(m1$Year_Month)
201009
I want to calculate the following two answers, how do I program it?
> difference in Month?????
[1] 0 1 2 4 5
>difference in Days?????
0 31 61 ....
Thank you in advance!!!
Tammy
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