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RE: st: RE: local macro
"Nick Cox" <email@example.com>
RE: st: RE: local macro
Tue, 27 Apr 2010 17:37:17 +0100
You give further questions, but little further information, except that
you are not writing any programs.
But you are using do files and also, I guess, interacting with Stata
through the command window. The explanation that local macros defined in
a do file are not visible to the main interactive session, and vice
versa, remains my best guess on what your problem is.
If you want to avoid globals, fine, and I support that, but you must
repeat the definition of a local in each place. (There are other,
programmers', solutions, but frankly I think they would just confuse
What is unclear? I know it is difficult, but you have to imagine
yourself decoding the problem from this description and this description
alone. A completely clear description would mean, ideally, that someone
else could run the code you give and reproduce your problem exactly.
Your report falls a long way short of that goal. Stripping the code down
to the minimum that produces the problem often helps. Reproducing the
problem with complete code that others can see is even better.
1. Precisely where you defined what remains unclear.
2. You seem unclear and confused yourself: "Stata does not seem to
recognise my local macro." That is not a description of a concrete
problem. What happened, precisely?
3. Extraneous detail doesn't help.
thank you very much for the clarification. Sorry, what would be the
crucial details I have not mentioned and that could make my problem
clearer to the Stata community?
I am just trying to avoid using global macros as I am afraid that at
some point I will forget I have defined one already and it will lead to
I only want to use my local macro within one do-file, I am not using
-programs- as defined by Stata. I would like not to have to run the
whole of it each time as it takes a lot of time. I would like to be able
to run the section of the file which sets up the data and defines the
local macro and then some regressions using that macro, but not all as
specified in the do-file. Is that possible?
Nick Cox wrote:
> This isn't very clear to me, as you give lots of details but not all
> crucial ones!
> But the mention of a do file suggests that you are defining a local
> macro and one place and trying to use it in another.
> -local- means precisely that.
> Local macros are local to one of
> 1. an interactive session
> 2. a -program- defined as such
> 3. a do file
> 4. a do file editor window, whether saved as a file or not
> and are not visible outside any such context.
> It may well be that globals will serve your purpose better.
> I was wondering if you could help me clarify something about local
> macros. I use Stata 11. I have a log do file with probably 100
> regressions. I am essentially testing 2 models the 2nd one being an
> extension of the first in a sense that I use all the variables that
> proved important in the first model and add some new ones. To make
> editing easier once I finalised the first model I created a local
> which is a list of variables used in the first model and used it when
> running out the regressions of the second model. It works fine if I
> my whole do file continuously. However, when I want to run just a few
> e.g. the line with a local macro and some regressions a few paragraphs
> down which use the macro in question
> Stata does not seem to recognise my local macro.
> Here is a sample of my commands:
> local streglist prsexratio2039 citotalgen osaka age agesq height
> income smoker withfam university goodhealth face3 sightprobl
> strongintnumb intsexratio
> streg `streglist' nodes desartokyo desosaka mindesinc if age<=40,
> dist(gamma) nolog
> I just wanted to confirm is it possible to use a local macro the way I
> was trying to and in that case what am I doing wrong? Or is it
> impossible and I should set a global macro instead?
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