I am trying to understand why R is working in a particular way.  I have a
data set with two variables; mark date (markd) and recap date (recapd).  I
would like to know the number of days between capture dates.  But if I
subtract recap date from mark date I often get the wrong results. 

 

Example:  Dataset -         markd                   recapd

                                                8/28/1991
12/24/1994

 

Timeoutd<-recapd-markd

Timeoutd = 1945

 

But the number of days between should be around 1214.

 

Why is this happening and how do you fix it.

 

Thank you for all the help.

 

RKinzer

 


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