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Re: st: inputting data via a series of nested loops
From
Steve Samuels <[email protected]>
To
[email protected]
Subject
Re: st: inputting data via a series of nested loops
Date
Tue, 23 Jul 2013 22:28:00 -0400
Issues that a close look at the -postfile- and -foreach- Manual entries would have prevented.
1. Permanent postname (not fatal)
"We recommend that postname always be obtained from tempname." (not fatal)
2. You failed to identify name as a string variable.
3. Correspondingly, you need quotes to refer to the string elements of macro a.
Steve
This works.
*=========================================
tempname myfile
postfile `myfile' str10 name time place using myfile, replace
local name "a b c" //
foreach n of local name {
forvalues time = 1/2 {
forvalues place = 1/2 {
post `myfile' ("`n'") (`time') (`place')
}
}
}
postclose `myfile'
use myfile, clear
list
*===========================================
On Jul 23, 2013, at 8:52 PM, Ben Hoen wrote:
Darn, I was pretty optimistic this would work. Thanks Matt. But, alas, I
have a bug I cannot immediately find. (It might be too late to do so...)
The ado:
*=========================================
postfile myfile name time place using myfile.dta, replace
local name "a b c"
foreach n of local name {
forvalues time = 1/2 {
forvalues place = 1/2 {
post myfile (`n') (`time') (`place')
}
}
}
*
postclose myfile
*===========================================
resulted in:
*=============================
. do "B:\temp\STD07000000.tmp"
. postfile myfile name time place using myfile.dta, replace
. local name "a b c"
. foreach n of local name {
2. forvalues time = 1/2 {
3. forvalues place = 1/2 {
4. post myfile (`n') (`time') (`place')
5. }
6. }
7. }
a not found
post: above message corresponds to expression 1, variable name
r(111);
end of do-file
r(111);
*====================================
It seems like the problem might be in the foreach, but I will need to get
back to it in the morning.
Thanks again.
Ben
Ben Hoen
LBNL
Office: 845-758-1896
Cell: 718-812-7589
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Matthew White
Sent: Tuesday, July 23, 2013 7:55 PM
To: [email protected]
Subject: Re: st: inputting data via a series of nested loops
Hi Ben,
How about -post-?
Best,
Matt
On Tue, Jul 23, 2013 at 7:30 PM, Ben Hoen <[email protected]> wrote:
> Thanks Sergiy,
>
> I actually did mean -input- as in "input x y". I can see the problem with
> what I wrote given what you mention about the data immediately following
the
> -input- command. Is there any way to build a dataset as I had hoped using
> loops of numbers/strings? For example, can I display, and then use the
> contents of the display for the data I wish to enter?
>
> I am grasping at straws here, but I have a large patterned dataset
(similar
> to the one I mentioned) that I need to build as a template and it would be
> useful to use loops to build it. Then again, maybe there is a much
> different way than using -input-...
>
> Thanks, for any advice you or others might offer. Best,
>
> Ben
>
> Ben Hoen
> LBNL
> Office: 845-758-1896
> Cell: 718-812-7589
>
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Sergiy Radyakin
> Sent: Tuesday, July 23, 2013 4:13 PM
> To: [email protected]
> Subject: Re: st: inputting data via a series of nested loops
>
> The command -input- assumes the data follows immediately in the program:
>
> input x y
> 10 20
> 20 70
> end
>
> You are probably confusing it with a command -input- in some other
> languages, like BASIC, where it serves the purpose of requesting
> values from the user.
>
> In Stata you can use the -display- command for that:
>
> display "Enter value for X:" _request(x)
> display `"$x"'
>
> Best, Sergiy
>
>
> On Tue, Jul 23, 2013 at 2:46 PM, Ben Hoen <[email protected]> wrote:
>> Hi all,
>>
>> I am trying to encourage Stata to enter data into a new dataset via a
loop
>> in an ado file. I was not able to find anything in the archives that fit
> my
>> situation (though I did find this:
>> http://www.stata.com/statalist/archive/2010-07/msg00425.html).
>>
>> For example, say I wanted to end up with this as my dataset:
>>
>> type place time
>> a 1 1
>> a 1 2
>> a 2 1
>> a 2 2
>> b 1 1
>> b 1 2
>> b 2 1
>> b 2 2
>> c 1 1
>> c 1 2
>> c 2 1
>> c 2 2
>>
>> I have tried the following which works:
>>
>> local name "a b c"
>> foreach n of local name {
>> forvalues time = 1/2 {
>> forvalues place = 1/2 {
>> display "`n' `time' `place'"
>> }
>> }
>> }
>> end
>> *
>>
>> The results:
>>
>>
>> . do "B:\temp\STD08000000.tmp"
>>
>> . local name "a b c"
>>
>> . foreach n of local name {
>> 2. forvalues time = 1/2 {
>> 3. forvalues place = 1/2 {
>> 4. display "`n' `time' `place'"
>> 5. }
>> 6. }
>> 7. }
>> a 1 1
>> a 1 2
>> a 2 1
>> a 2 2
>> b 1 1
>> b 1 2
>> b 2 1
>> b 2 2
>> c 1 1
>> c 1 2
>> c 2 1
>> c 2 2
>>
>> And therefore I hoped the following would work:
>>
>> input name time place
>> local name "a b c"
>> foreach n of local name {
>> forvalues time = 1/2 {
>> forvalues place = 1/2 {
>> `n' `time' `place'
>> }
>> }
>> }
>> end
>> *
>>
>> But, for which I get:
>>
>>
>> . do "B:\temp\STD08000000.tmp"
>>
>> . input name time place
>>
>> name time place
>> 1. local name "a b c"
>> 'local' cannot be read as a number
>> 1. foreach n of local name {
>> 'foreach' cannot be read as a number
>> 1. forvalues time = 1/2 {
>> 'forvalues' cannot be read as a number
>> 1. forvalues place = 1/2 {
>> 'forvalues' cannot be read as a number
>> 1. `n' `time' `place'
>> '`' cannot be read as a number
>> 1. }
>> '' cannot be read as a number}
>> 1. }
>> '' cannot be read as a number}
>> 1. }
>> '' cannot be read as a number}
>> 1. end
>>
>> . *
>> .
>> end of do-file
>>
>>
>> Any ideas how to correct?
>>
>> Thanks, in advance,
>>
>> Ben
>>
>>
>> Ben Hoen
>> Staff Research Associate
>> Lawrence Berkeley National Laboratory
>> Office: 845-758-1896
>> Cell: 718-812-7589
>> [email protected]
>> http://emp.lbl.gov/staff/ben-hoen
>>
>> Visit our publications at:
>> http://emp.lbl.gov/reports/re
>>
>> Sign up for our email list to receive publication notifications at:
>>
>
https://spreadsheets.google.com/a/lbl.gov/spreadsheet/viewform?formkey=dGlFS
>> 1U1NFlUNzQ1TlBHSzY2VGZuN1E6MQ
>>
>>
>>
>>
>>
>> *
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> *
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--
Matthew White
Senior Project Associate
Innovations for Poverty Action
101 Whitney Avenue, New Haven, CT 06510 USA
www.poverty-action.org
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