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Re: st: changes of user-input by -bootstrap- and -permute-


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: changes of user-input by -bootstrap- and -permute-
Date   Mon, 7 Feb 2011 10:35:44 +0000

The fact that -twoway- uses the || syntax is I guess incidental, but
e.g. -xtmixed- also does, and the commands you mention need to work
with that.

My guess is that you'll have to give up on this syntax and use e.g. ()
to indicate mediator variables.

Nick

On Mon, Feb 7, 2011 at 8:47 AM, Ulrich Kohler <kohler@wzb.eu> wrote:


> I have a problem in the way -bootstrap- or -permute- cooperates with a
> program of mine, -khb- (available form SSC). In the command
>
> . bootstrap _b[indirect], reps(50): khb regress mpg length || weight
>
> -bootstrap- internally changes the user-input
>
> "khb regress mpg length || weight"
>
> to
>
> "khb (regress mpg length) (weight)"
>
> The same happens with -permute-. Looks like -bootstrap- interprets the
> user input as if it where a -graph- command.
>
> I think the change arrives it the official subprogram
> "_on_colon_parse.ado", which is used by -bootstrap- and -permute- but
> it is not clear to me why it happens.
>
> What can I do in my program -khb- to circumvent that problem?
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