Re: st: Identify and Replace Values

["Tobias Friedli" <tobias.friedli@access.uzh.ch>]

Thank you very much, it seems to work like a charm. Only Problem is, that 
the some Model-names contain spaces and then Stata says "invalid name". I 
know there is a command to relpace all the spaces by an underscore, but i 
can't find it anymore. Anybody knows this command? Thanks



On Mon, 12 Jul 2010 13:52:46 -0400
 Jeph Herrin <stata@spandrel.net> wrote:
> how about
>
>  levelsof traded_model, local(traded)
>  levelsof new_model, local(new)
>  local onlytraded : list traded - new
>  local onlynew    : list new - traded
>  local others     : list onlynew | onlytraded
>
>  replace traded_model="others" if inlist(traded_model,"`others'")
>  replace new_model   ="others" if inlist(new_model,"`others'")
>
>
> hth,
> Jeph
>
> On 7/12/2010 12:18 PM, Hobst wrote:
> > Hello
> >
> > I have a huge dataset containing automotive brand-swiching data. I have a
> > variable called traded_model and another variable called new_model. in 
> > order
> > to output a symmetric swiching matrix i need to identify all the 
> > expressions
> > that are eigther only in traded_brand or only in new_brand and replace the
> > expression with "others". For example a model called "318d" exists in
> > traded_model but not in new_model, so all the "318d" should be replaced by
> > "others".
> >
> > Does anyone have an idea how i can programm that? I dont get it to work, 
> > and
> > doing it manually is close to impossible as there are more than 1000
> > different model names.
> >
> > Any help is much appreciated, thank you.
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