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Re: st: 'twoway' syntax subtlety


From   George Hoffman <ghoffman@mcw.edu>
To   <statalist@hsphsun2.harvard.edu>
Subject   Re: st: 'twoway' syntax subtlety
Date   Wed, 15 Oct 2008 07:59:08 -0500

Not quite.
I was trying too hastily to thank.
Thanks again.


On 10/15/08 07:45 AM, "Martin Weiss" <martin.weiss1@gmx.de> wrote:

> "Maarten and Martin"... Never mind, the distinction is probably as subtle as
> the -twoway- syntax...
> 
> 
> HTH
> Martin
> 
> 
> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of George Hoffman
> Sent: Wednesday, October 15, 2008 2:36 PM
> To: statalist@hsphsun2.harvard.edu
> Subject: Re: st: 'twoway' syntax subtlety
> 
> Thank you eva, martin,, and martin.
> I have more learning to do - this is why I love STATA.
> George
> 
> 
> 
> On 10/15/08 07:28 AM, "Eva Poen" <eva.poen@gmail.com> wrote:
> 
>> Well, the 'norm' option simply adds another -twoway- plot to the
>> kernel density; if you are using -twoway- anyway, you can call it
>> yourself:
>> 
>> twoway (function y = normden(x,mean,sd))
>> 
>> I reckon that allowing the 'norm' option in -twoway kdensity- would
>> clash with general -twoway- behaviour (options for legends,
>> xrange/yrange etc.).
>> 
>> Eva
>> 
>> 
>> 2008/10/15 George Hoffman <ghoffman@mcw.edu>:
>>> I'm trying to overlay two (or more) kdensity plots.
>>> 
>>> kdensity accepts the 'norm' option
>>> twoway kdensity does not - see log below
>>> 
>>> I thought twoway calls kdensity - but I must have a misunderstanding of
>>> stata 10 graphics....
>>> 
>>> An explanation of principle would be most appreciated.
>>> Thank you,
>>> George Hoffman
>>> 
>>> 
>>> 
>>> This my Stata 10 log:
>>> 
>>> . two (kdensity rso2c if vmi85==0) (kdensity rso2c if vmi85==1)
>>> 
>>> . two (kdensity rso2c if vmi85==0,norm) (kdensity rso2c if vmi85==1,norm)
>>> option norm not allowed
>>> r(198);
>>> 
>>> . kdensity rso2c if vmi85==0,norm
>>> 
>>> . two kdensity rso2c if vmi85==0,norm
>>> option norm not allowed
>>> r(198);
>>> 
>> =
>> *
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