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Vergriffenego
Fluorite | Level 6

Hello,

 

I am working on a dataset that need to calculate a new time. For example, I slept at 00:00 (so) and slept for 6.5 (half) hours, so I got up at 06:00 (new).

idso (hh:mm)half (hrs)new (hh:mm)
71:303.32 
261:003.73 
310:003.94 
683:003.32 
870:503.23 

 

How can I calculate the "new" variable?

I tried simply to add " so+half" then I got seconds.

1 ACCEPTED SOLUTION

Accepted Solutions
Kurt_Bremser
Super User

Time values in SAS are counts of seconds, so you need to expand your hours to this:

new = so + (half * 3600);
format new time5.;

The brackets are just there for clarification, mathematically they're not needed (multiplication is done before addition).

View solution in original post

4 REPLIES 4
Kurt_Bremser
Super User

Time values in SAS are counts of seconds, so you need to expand your hours to this:

new = so + (half * 3600);
format new time5.;

The brackets are just there for clarification, mathematically they're not needed (multiplication is done before addition).

Vergriffenego
Fluorite | Level 6

 This worked. Thank you very much!

s_lassen
Meteorite | Level 14

Assuming your input data looks like this (it is better to present is as a data step):

data have;                                                                                                                              
input id so : time. half;                                                                                                               
format so time5.;                                                                                                                       
cards;                                                                                                                                  
7      1:30      3.32                                                                                                                   
26      1:00      3.73                                                                                                                  
31      0:00      3.94                                                                                                                  
68      3:00      3.32                                                                                                                  
87      0:50      3.23                                                                                                                  
;run;   

You can simply convert the hours to seconds (60*60=3600 seconds/hour) and add to get the new time:

data want;                                                                                                                              
  set have;                                                                                                                             
  new=so+half*3600;                                                                                                                     
  format new time5.;                                                                                                                    
run;   
Vergriffenego
Fluorite | Level 6

Thank you for your reply! The solution worked well!

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