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Re: st: execution of the heckman command


From   daniel klein <klein.daniel.81@googlemail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: execution of the heckman command
Date   Wed, 7 Dec 2011 00:46:42 +0100

Diane,

if your mail is properly formated, your problem is in the following lines:

*/hhsize femalehh wealth2 wealth3 wealth4 wealth5 mprim msechigher
mnotworking; /*
select(hv110  hv105 hv1052 male urban foothill mountain kids5 /*

Options are separated from commands using a comma. In your code the
-heckman- command ends in the first line. Change the ";" to "," in
this line, get rid of all "*/" and  "/*" (or alternatively do not set
the delimiter, see remarks below) and your code should work.

As a side issue, I quote from the excellent essay "Suggestions on
Stata programming style" (Stata Journal 5(4) 2005, 560-566) by Nick
Cox

"Use #delimit ; sparingly (Stata is not C): commenting out ends of
lines is tidier
where possible (although admittedly still ugly). The /// comment introduced in
Stata 8 is most helpful here and is arguably more pleasing visually than /* */."

I would like to add, that you sure do not want to mix -delimit- (i.e.
";") with "/**/", as one of them is unnecessary and it makes your code
hard to read.

Best
Daniel

--
HI
I have run these models before and had success but can no longer do this.
[...]
I have checked the reference manuals to make sure I have the correct y
variables in the different commands.
My commands are as follows [...]
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