Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down on April 23, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: Re: Varname default in a program


From   Dani Tilley <tilleydani@yahoo.com>
To   stata <statalist@hsphsun2.harvard.edu>
Subject   st: Re: Varname default in a program
Date   Fri, 9 Jul 2010 11:41:53 -0700 (PDT)

Thanks Nick. 



----- Original Message ----

I don't think there is a way to do this with -syntax- but that doesn't
matter.

Within your program, after your -syntax- statement you go

if "`pvar'" == "" local pvar "<default>"

as if -pvar()- was not selected, the local macro pvar will be empty. Or,
rather, the local macro pvar will be undefined, but that's the same to
Stata.

By the way, the -help- for -syntax- should be considered complete, so
guessing that there are undocumented extras is not a good strategy.

Nick
n.j.cox@durham.ac.uk
From: Dani Tilley <tilleydani@yahoo.com>
To: stata <statalist@hsphsun2.harvard.edu>
Sent: Fri, July 9, 2010 2:16:13 PM
Subject: Varname default in a program

Hi,

I'm trying to write a program that will have the following syntax

syntax varlist(min=1 max=5), [Pvar(varname)]

However, I want the to have a default value for pvar so that when users say 
-command var1 var2- the program returns no error and uses the default variable 
for pvar. I know how this is done for numeric variables but can't do it in this 
context. I tried [Pvar(varname default)] where default is a variable but got 
r(197).

Any help is appreciated.

DF Tilley


      
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index