Hi -
I want to write a loop to collapse my seconds level dummy variables (from 0:00:00 to 23:59:59, 86400 variables in total) to minutes level varibales(sum all seconds within one minute), right now my data looks like this:
id second1 second2 second3 ........ seconds86398 seconds86399 seconds86400
1 1 1 . . 1 1
2 1 1 1
3 1 1 1
The ideal dataset is like this
id min1 min2 min3 ......... min1439 min1440
1 2 0 0 0 2
2 0 0 0 30 45
3 32 24 39 0 0
Without looping, I have to type the code for 1440 times:
data want;
set have;
min1 = sum(of second1-seconds60);
min2 = sum(of seconds61-seconds120);
min3 = sum(of second121-seconds180);
......
min1440 = sum(of seconds86340- seconds86400);
run;
Any idea?
Thanks!
You could do this with a series of arrays and programming statements, but it is probably easiest to use the macro language.
data want;
set have;
%macro loop;
%do i = 1 %to 1440;
min&i = sum(of seconds%eval((&i-1)*60+1) - seconds%eval(&i*60));
%end;
%mend;
%loop;
run;
You could do this with a series of arrays and programming statements, but it is probably easiest to use the macro language.
data want;
set have;
%macro loop;
%do i = 1 %to 1440;
min&i = sum(of seconds%eval((&i-1)*60+1) - seconds%eval(&i*60));
%end;
%mend;
%loop;
run;
That works perfectly, thanks!
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