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Re: st: the use of foreach command in Stata


From   Steve Nakoneshny <scnakone@ucalgary.ca>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: the use of foreach command in Stata
Date   Thu, 15 Mar 2012 10:00:57 -0600

Rosie,

The most likely place for the graphs to have been saved will be the working directory your dataset is in. Failing that (assuming you used a do file and not simply worked from the command line), they should be in whatever directory you set. Failing that, you can always specify the directory path for the file as part of the -graph save- command.

As for your issue with -more-, you can always -set more off- at the beginning of your session / do file and Stata will run through your commands without requiring any direct keystroke intervention from you.

Steve

On 2012-03-15, at 9:51 AM, Rosie Chen wrote:

> Nick. It worked well. Thank you. I wonder where Stata has saved all the histogram graphs and how can I track them. If I did not use the "more" command, Stata only showed the last graph to me. I couldn't find any hint from Stata manual. 
> 
> 
> ----- Original Message -----
> From: Nick Cox <njcoxstata@gmail.com>
> To: statalist@hsphsun2.harvard.edu
> Cc: 
> Sent: Wednesday, March 14, 2012 9:36 PM
> Subject: Re: st: the use of foreach command in Stata
> 
> I already answered this; see
> 
> http://www.stata.com/statalist/archive/2012-03/msg00544.html
> 
> Once again: My answer implied combining code, like this
> 
> foreach var of varlist lp* {
>     histogram `var',  by(AID4, col(1))
>     graph save histogram`var'
> }
> 
> To see a slide show, not a movie, do this [new this posting]
> 
> foreach var of varlist lp* {
>     histogram `var',  by(AID4, col(1))
>     more
>     graph save histogram`var'
> }
> 
> Incidentally, the Statalist archive shows that you started this thread
> by replying to a previous thread. See here to see that you should not
> do that:
> 
> http://www.stata.com/support/faqs/res/statalist.html#toask
> 
> Specifically, please note the last sentence.
> 
> Nick
> 
> On Thu, Mar 15, 2012 at 1:23 AM, Rosie Chen <jiarongchen2002@yahoo.com> wrote:
>> 
>> Nick, sorry that I didn't see your response to Till earlier. If using `var' instead of lname is ok, then I guess my question is:  how can I save all the histogram graphs and track back all the graphs? Stata only showed the last graph to me. Thank you,
>> 
>> ________________________________
>> From: Nick Cox <njcoxstata@gmail.com>
>> To: statalist@hsphsun2.harvard.edu
>> Sent: Tuesday, March 13, 2012 3:13 PM
>> Subject: Re: st: the use of loop function in Stata
>> 
>> As before I recommend against using the term "loop function". You are
>> using the -foreach- command. It's not a function (Stata sense).
>> "Looping with -foreach- " also makes sense.
>> 
>> The reason this doesn't work is that "lnamelist" is not a keyword
>> recognised by -foreach-: look again at the help.
>> 
>> Till actually recommended something different from what you typed:
>> 
>> foreach lname in lnamelist
>> 
>> but that is also illegal, except in very special circumstances, a loop
>> with just one literal name "lnamelist". I didn't spot in my earlier
>> reply that Till's suggestion was illegal (except in very special
>> circumstances).
>> 
>> Nick
>> 
>> On Tue, Mar 13, 2012 at 6:50 PM, Rosie Chen <jiarongchen2002@yahoo.com> wrote:
>>> Thank you, Steve and Till. Below is the revised syntax, but I got an error message
>> of "variable lnamelist not
>> found".  Isn't lp* the list? This is the first time I use the loop function, so any suggestion would be appreciated.
>>> 
>>> foreach lname in lnamelist lp*{
>>> histogram `lname',  by(AI4, col(1))
>>> graph save histogram`lname', replace
>>> }
>>> 
>>> 
>>> ----- Original Message -----
>>> From: Steve Nakoneshny <scnakone@ucalgary.ca>
>>> To: "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
>>> Cc:
>>> Sent: Tuesday, March 13, 2012 11:28 AM
>>> Subject: Re: st: the use of loop function in
>> Stata
>>> 
>>> You will also need to add the -replace- option to the histogram
>> command.
>>> 
>>> On 2012-03-13, at 8:44 AM, Dr. Till Ittermann wrote:
>>> 
>>>> Hi,
>>>> 
>>>> I would loop over lname not var:
>>>> 
>>>> foreach lname in lnamelist {
>>>> histogram `lname',  by(AID4, col(1))
>>>> graph save histogram`lname'
>>>> }
>>>> 
>>>> 
>>>> 
>>>> m 13.03.2012 15:36, schrieb Rosie Chen:
>>>>> 
>> Nick, thank you very much for the further advice, which makes the
>> syntax more efficient. Given the loop syntax I have, how to save all the
>> histogram graphs? If I use the code below, the error message says:
>> "file histogram.gph already exists".
>>>>> 
>>>>> 
>>>>> foreach var of varlist lp*{
>>>>> 
>>>>>      histogram `var',  by(AID4, col(1))
>>>>> 
>>>>>      graph save histogram
>>>>> }
> 
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