Re: st: strip factor variable operators?

[jpitblado@stata.com (Jeff Pitblado, StataCorp LP)]

Stas Kolenikov <skolenik@gmail.com> asks how to remove all time-series and
factor variables opterators from a varlist specfication:

> is there a simple way to strip out the time series and factor variable
> operators? I have a list of regressors with all sorts of stuff like
> -i.foreign ib3.rep78 c.price##c.price-, and I want to produce a list
> that is cleaned off the prefixes, just -foreign rep78 price-. Is there
> a standard parser, or an extended macro function, to do this? I can
> take the whole list, -gettoken, parse(".")- each term and strip the
> part before the dot, if there's any. But this seems like a relatively
> mundane task that must be doable with some official Stata tools.

Nick Cox pointed out that -tsrevar- was a start.

Stas can use the -fvrevar- command to do this.  Here is an example:

***** BEGIN:
. sysuse auto
(1978 Automobile Data)

. fvrevar i.foreign ib3.rep78 c.price##c.price, list

. return list

macros:
            r(varlist) : "price foreign rep78"
***** END:

--Jeff
jpitblado@stata.com
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