In http://www.stata.com/statalist/archive/2007-12/msg00669.html
Phil Schumm <pschumm@uchicago.edu> asked about writing a command
to use with -simulate- that would accept -using- as part of its
syntax:
> Often when performing simulations, it is helpful to start with an
> existing dataset and then add to it, rather than having to create the
> entire dataset from scratch at each iteration. It would then seem
> logical to pass the location of the saved dataset into one's program
> via the -using- option. However, for some reason, I can't seem to
> get that to work (as demonstrated by this simple example):
>
> (example details omitted)
>
> . simul p = r(p), reps(100): foo group using `"`myfile'"', diff(1) sd(1)
> using not allowed
> r(101);
Phil correctly found that the error was being returned by
-_prefix_command- which is a utility routine called by -simulate-
and other prefix commands such as -bootstrap- and -jackknife-.
Austin Nichols <austinnichols@gmail.com> and Thomas Steichen
<SteichT@rjrt.com> show a workaround for this by specifying the
filename through an option:
http://www.stata.com/statalist/archive/2007-12/msg00671.html
http://www.stata.com/statalist/archive/2007-12/msg00674.html
We will look into adding the ability for commands used with the above
prefix commands to accept -using-; if that is not possible, we will
change the documentation to make it clear that it is not allowed.
--Yulia
ymarchenko@stata.com
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