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robertrao
Quartz | Level 8

IS THE "COMMENTED" AND THE "NON SCOMMENTED" LINES DOING THE SAME THING IN THE BELOW CODE????

THANKS

 

data want;

 

set ints_exts2;

 array ins int:;

 array outs ext:;

 do i = 1 to dim(ins);

 if ins(i)^=. and outs(i)^=. then duration=sum(duration,outs(i)-ins(i)) /*UNCOMMENTED*/

 *if 2=N(ins(i),outs(i)) then duration=sum(duration,outs(i)-ins(i));    /*COMMENTED*/

end

 ;

days = datepart(duration);

time = timepart(duration);

hrs=time/(60*60);

Total_vent_hours =days*24+ time/(60*60);

vent_days=Total_vent_hours/24;

 run;

5 REPLIES 5
ballardw
Super User

Not exactly as the Not missing, ^=., works for character variables while N(variables) requires all of the arguments to be numeric.

 

If you are dealing with mixed data types you might want CMISS(ins[i], out[i]) = 0

Reeza
Super User
If you have any other special missing values that also won't give you the same results.

data have;
a=.; b=2; output;
a=1; b=.N; output;
a=2; b=3; output;
a=.; b=.; output;
a=.A; b=.A; output;
run;

data want;
set have;
if a ne . and b ne . then flag=1;
else flag=0;
x=n(a,b);
run;
robertrao
Quartz | Level 8

Thanks Reeza.

 

INS and OUTS arrays contain dates only. Can have missing values.

Wanted toi know if in that case both line output the same results??

 

Thanks

ballardw
Super User

You could check with:

compare =(ins(i)^=. and outs(i)^=.) = (N(ins(i),outs(i)));

Reeza
Super User
If you have a very specific scenario, it's faster to test it than ask. In general, no it won't, for your case it may, as long as you can guarantee that it will always stay that way.

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