Re: st: RE: Detect use of svy: prefix

[Richard Williams <richardwilliams.ndu@gmail.com>]

At 12:50 PM 5/25/2011, Scott Merryman wrote:
> Could you use  - _on_colon_parse- on the command and then check if the
> macro s(before) exists and is equal to "svy" ?
>
> For example:
>
> capture _on_colon_parse svy: mean x
> sreturn list
>
> Scott

Thanks Scott. I tried adding

capture _on_colon_parse: `0'

but the s(before) isn't showing up. But, I do see

macros:
              s(after) : " health female if __000001 [iw=__000002] ,    "


That suggests one possible workaround: svy calls a program using 
iweights, and you can check to see if iweights are being used. The 
one problem would be if somebody actually did want to use iweights 
without using svy.

There are various ways to tell if the -by- prefix has been used, e.g. 
function _by() . I wish there was something comparable for svy.


-------------------------------------------
Richard Williams, Notre Dame Dept of Sociology
OFFICE: (574)631-6668, (574)631-6463
HOME:   (574)289-5227
EMAIL:  Richard.A.Williams.5@ND.Edu
WWW:    http://www.nd.edu/~rwilliam

*
*   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/