re: st: Graphic colour matrix

[David Airey <david.airey@vanderbilt.edu>]

> Dear Listers,
>
> Has anyone seen the following graphic in Stata--it is quite common  
> outside Stata.
> Consider a list of variable, varlist say, and we have a variable  
> that takes on a
> single value for each pair of variables--such as a correlation, for  
> example.
>
> I would like to depict this relationship graphically by using a  
> matrix where the
> (i,j)th component will depict the relationship between variables i  
> and j.
> This relationship will be denoted by a solid colour block, where  
> the colour
> is determined by some scale--possibly the spectrum with the blue end
> depicting high negative correlations, to continue the correlation  
> example,
> and the red end depicting high positive correlations, with a blank  
> denoting
> zero or missing or not significant, or what have you.
>
> Anyone programmed this?
>
> Thanks,
>
> m.p.

Check out pwld by David Clayton. It has this option (graph) so maybe  
you can scavenge his code.

-Dave
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