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Re: st: adding variables within time range
From
Sergiy Radyakin <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: adding variables within time range
Date
Sun, 24 Nov 2013 15:04:10 -0500
Hello Greg.
input Time Length
236 24
145 300
218 10
2334 31
end
generate Hour=floor(Time/100)
generate period=floor((Hour+1)/2)
list
collapse (sum) Length, by(period)
list
Note that your first period (period 0) is from 0 to 1 hour, others are
2 hours long. Hence +1 in the code for Hour.
Splitting 300 over multiple periods would have been more challenging
task. Make sure you've chosen the right option.
Best, Sergiy
On Sun, Nov 24, 2013 at 2:12 PM, Coleman, Greg <[email protected]> wrote:
> Hi Stata users - so new at Stata I am not sure how to word this. I have data with the time variable in military format. There is also another variable in the row which is an integer just representing length of time, in minutes. A small snip is as follows:
>
> Time Length
> 236 24
> 145 300
> 218 10
> 2334 31
>
> What I want to do is add length, for all times occurring between 1 and 3am, 3-5am, and so on.
> In this example 1-3am would be = 24+300+10.
>
> Do I have to create a new variable for each time slice I choose? If so, how would I do the addition?
> Thank you!
> Greg
>
>
>
>
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