Re: st: adding lines to graph

["b. water" <barleywater@hotmail.com>]

Hello Scott,

Sorry about the language. Titres (UK) = titers (US) = "the strength of a 
solution or the concentration of a substance (as an antibody) in solution as 
determined by titration" as defined by Webster's dictionary.

I have a go at your stata commands. I do not know whether that's what's 
Clara's after and it's not what I have in mind but thank you for sharing the 
lateral thinking idea/principle of overlaying two graphs rather than trying 
to find out from the manual all the options that might've been required to 
do that.

Cheers,
bw



> From: "Scott Merryman" <smerryman@kc.rr.com>
> Reply-To: statalist@hsphsun2.harvard.edu
> To: <statalist@hsphsun2.harvard.edu>
> Subject: Re: st: adding lines to graph
> Date: Tue, 20 May 2003 21:00:01 -0500
>
> ----- Original Message -----
> From: "b. water" <barleywater@hotmail.com>
> To: <statalist@hsphsun2.harvard.edu>
> Sent: Tuesday, May 20, 2003 4:10 PM
> Subject: RE: st: adding lines to graph
>
>
> > i was faced with this problem in the past. what i am suggesting to you 
> is
> a
> > 'cheat' method but nevertheless pragmatic and works. it is not
> > 'stata'tiscally correct but at that time or even now i knew no better 
> but
> > here it is anyway. up to you whether you want to deploy it or not.
> >
> > copy your graph and paste as metafile into either word or powerpoint and
> > then drew a square object over the pertinent area of the graph. rt click
> on
> > the object, choose format object, click transparent and choose 5% grey 
> (or
> > color of your liking). that's it.
> >
> > hope this is helpful.
> >
> > i know that in the past, mentioning the micros*** raise some antibody
> titres
> > in this list. so my apology before hand. if anyone else knows how to do
> the
> > shading in stata, do tell. even i would be interested to know too.
> >
> > cheers,
> > bw
>
> First, what are titres?
>
> Second, I'm not sure if you can shade sub-regions of the graph but you can
> shade part of the graph with -twoway area- laid over a line graph.  The
> basic idea is to create another series that only contains observations for
> the shaded regions.
>
> For example, if you wanted to shade the recessions of a GNP timeseries you
> could do the following.
>
> preserve
> sysuse gnp96,clear
> gen recession = d.gnp if d.gnp < 0
> replace rec = 0 if rec ==.
> twoway (line d.gnp date  ) (area recession date)
> restore
>
> Hope this helps,
> Scott
>
>
>
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