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Re: st: Line of equality in scatter plot


From   "Eva Poen" <eva.poen@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Line of equality in scatter plot
Date   Wed, 8 Oct 2008 16:02:34 +0100

Laura,

-twoway function- will do this.

twoway (scatter x1 x2) (function y = x, range(0 100))


Adjust the range() option to the range of your variables.

Eva


2008/10/8 LL Miller, Avon Longitudinal Study Parents and Children
<L.L.Miller@bristol.ac.uk>:
> Afternoon all,
>
> I'm trying to assess the reliability of a continuous variable with the same
> variable assessed by a second person. I have used alpha var1 var2 to get
> Cronbachs alpha but wanted to see what it is doing visually. I created a
> scatter plot but can't find any option that will allow me to draw a line on
> the plot through the diagonal i.e. where the points should fall if there is
> no difference in the two assessments.
>
> I have encountered several other useful things like ovfplot for after
> regression plots but this since I am not doing regression this is not quite
> what I want.
>
> Does anyone know how to do this?
>
> Cheers
>
> Laura
>
> ----------------------
> Please note new address and contact details from 22nd July 2008
> LL Miller, Avon Longitudinal Study Parents and Children (ALSPAC)
> Department of Social Medicine
> University of Bristol
> Oakfield House
> Oakfield Grove
> Clifton
> Bristol BS8 2BN
>
> Room number: BS9
> Phone: +44(0) 117 331 0105
> Fax: +44(0) 117 331 0080
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