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re: Re: st: nested foreach loops using the values in the respective order
From
"Ariel Linden, DrPH" <[email protected]>
To
<[email protected]>
Subject
re: Re: st: nested foreach loops using the values in the respective order
Date
Wed, 17 Jul 2013 07:03:03 -0400
Thank you Richard, Sergiy and Nick!
These solutions all work very nicely. It's very enlightening to see how the
various ways to solve a given problem!
Ariel
Date: Tue, 16 Jul 2013 18:27:32 -0400
From: Sergiy Radyakin <[email protected]>
Subject: Re: st: nested foreach loops using the values in the respective
order
I'd prefer matrices for this case:
matrix TestPlan = 390, 0.50 \ 121, 0.30 \ 42, 0.20
forval i=1/`=rowsof(TestPlan)' {
local one = TestPlan[`i',1]
local two = TestPlan[`i',2]
display `"`one' `two'"'
}
//eof
390 .5
121 .3
42 .2
Note that it is also quite easy to load and save matrices, so that if
you have different test plans or simulations you can store them
separately from the code.
Best, Sergiy
On Tue, Jul 16, 2013 at 6:09 PM, Nick Cox <[email protected]> wrote:
> This is one loop over three pairs, if I understand you correctly:
>
> forval k = 1/3 {
> local i : word `k' of 390 121 42
> local j : word `k' of 0.5 0.3 0.2
>
> }
>
> Some discussion in
>
> SJ-3-2 pr0009 . . . . . . . . . . . . . Speaking Stata: Problems with
lists
> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N. J.
Cox
> Q2/03 SJ 3(2):185--202 (no
commands)
> discusses ways of working through lists held in macros
>
> SJ-3-2 pr0009 . . . . . . . . . . . . . Speaking Stata: Problems with
lists
> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N. J.
Cox
> Q2/03 SJ 3(2):185--202 (no
commands)
> discusses ways of working through lists held in macros
> Nick
> [email protected]
>
>
> On 16 July 2013 22:55, Ariel Linden, DrPH <[email protected]> wrote:
>> Hi fellow listers,
>>
>> This is likely to be a simple problem, but I can't seem to figure this
one
>> out..
>>
>> I have a nested loop where I'd like the code to loop over each pair of
>> values in the first and second foreach loop respectively. So in the
example
>> below, I'd like there to be only three total loops, with the first paired
>> values = 390, 0.50, the second paired values = 121, 0.30, and the third
>> paired values = 42, 0.20. This should terminate the looping.
>>
>> However, I get the array of values as displayed below...
>>
>> Thanks in advance!
>>
>> Ariel
>>
>> **** code****
>>
>> foreach i of numlist 390 121 42 {
>> foreach j of numlist 0.50 0.30 0.20 {
>> display "`i',`j'"
>> }
>> }
>> **** end code
>>
>>
>> ***output***
>> 390,.5
>> 390,.3
>> 390,.2
>> 121,.5
>> 121,.3
>> 121,.2
>> 42,.5
>> 42,.3
>> 42,.2
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