
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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