Re: st: plotting multiple normal densities

[Nick Winter <nw53@cornell.edu>]

If you know the mean and standard deviation of each normal curve you want, 
you can just use -twoway function-.  For example, to do two curves, with 
means 0 and 1, and standard deviations 1 and 3:

 . graph twoway function normden(x, 0, 1) , range(-5 5) ||   ///
     function normden(x, 1, 3) , range(-5 5)

--Nick Winter

At 12:59 PM 8/31/2004 +0100, you wrote:

> I have a (mixed logit) model in which the mean and variance of
> several variables' distributions are estimated. In all cases (so far)
> these are normally distributed.
>
> I want to plot these pdf's, so I use 'drawnorm' to draw from a
> sample with the required mean and variance.
>
> I can then plot these individually using the 'normal' option after
> 'hist', or using 'kdensity'.
>
> However I want to plot >1 of these distributions on the same graph
> to allow visual comparison.
> Ideally it would not be a histogram, just the pdf plots.
>
> Can anyone advise how this is done?
>
> thanks,
> dan rigby
>
>
>
>
>
> Dr Dan Rigby
> Environmental Economist
> School of Economic Studies
> Manchester University
> M13 9PL
> 0161 275 4808
> http://les1.man.ac.uk/ses/
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--------------------------------------------------------
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