Re: st: using /// with parmby

[Roger Newson <r.newson@imperial.ac.uk>]

-parmby- (like earlier versions of -statsby-) takes a command line (in 
quotes) as part of its input. If you are in the default Stata 
carriage-return-delimited mode defined by

#delim cr

(see -help delimit-), then you cannot split long quoted strings between 
lines, as Jamie is trying to do.

The solution I usually use is to do my programming in the non-standard 
semicolon-delimited mode defined by

#delim ;

which allows users to split quoted strings between lines, becuase 
commands are delimited by semicolons. As in:

parmby "regress
 mpg weight",
 list(,);

which works in my do-files (which start with -#delim ;-).

Jamie might like to use semicolon-delimited mode only with -parmby- and 
other special applications, which use very long quoted strings, and use 
carriage-return-delimited mode elsewhere. As in:

#delim ;
parmby "regress
 mpg weight",
 list(,);
#delim cr

An alternative possibility is to build the command in a local macro. As in:

local cmd `"regress"'
local cmd `"`cmd' mpg weight"'
parmby `"`cmd'"', list(,)

I hope this helps.

Best wishes

Roger


Roger B Newson BSc MSc DPhil
Lecturer in Medical Statistics
Respiratory Epidemiology and Public Health Group
National Heart and Lung Institute
Imperial College London
Royal Brompton Campus
Room 33, Emmanuel Kaye Building
1B Manresa Road
London SW3 6LR
UNITED KINGDOM
Tel: +44 (0)20 7352 8121 ext 3381
Fax: +44 (0)20 7351 8322
Email: r.newson@imperial.ac.uk
Web page: http://www.imperial.ac.uk/nhli/r.newson/
Departmental Web page:
http://www1.imperial.ac.uk/medicine/about/divisions/nhli/respiration/popgenetics/reph/

Opinions expressed are those of the author, not of the institution.

On 27/10/2010 12:06, Jamie Fagg wrote:
> Dear Statalisters,
>
> I'm using Stata/SE 10.1 for Windows. Born 10 Jun 2010. All files are up to date.
>
> My query is about -parmby- (http://ideas.repec.org/c/boc/bocode/s352601.html).
>
> The following command works fine.
>
> parmby "xi: mlogit walkcat i.tertsoccoh i.sex*age  i.schrpV1  i.urbrur
> if tousewalkcat0407V1,rrr vce(cluster pseudo) base(0)", by(qinc)
> saving(Graph4/GSSocCapWalk04IncIntSoc, replace) eform for(estimate
> min95 max95 %8.2e)
>
> However, it's rather long. I'd like to break it over one or maybe two
> lines. I tried this:
>
> . ***Stratification models for graph of interaction in "GSSocCapWalk04IncIntSum"
> .
> . parmby "xi: mlogit walkcat i.tertsoccoh i.sex*age  i.schrpV1  i.urbrur ///
> You must specify at least one of the four options:
> list(), saving(), norestore, and fast.
> If you specify list(), then the output variables specified are listed.
> If you specify saving(), then the new data set is output to a disk file.
> If you specify norestore and/or fast, then the new data set is created in the me
> > mory,
> and any existing data set in the memory is destroyed.
> For more details, see on-line help for parmby and parmest.
> r(498);
>
> I checked the on-line help, and the archives to see if this has come
> up before but I couldn't find any references to it. Is -parmby-
> different to other commands when it comes to breaking across multiple
> lines?
>
> Thanks for your consideration,
>
> Jamie
> --
> Room 2.09, City Centre
> School of Geography, Queen Mary, University of London
> Mile End Rd
> E1 4NS
> Tel: 020 7882 2748
>
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