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Re: st: tabstatmat question

From   Austin Nichols <[email protected]>
To   [email protected]
Subject   Re: st: tabstatmat question
Date   Fri, 2 Sep 2011 12:08:31 -0400

Sergio <[email protected]> :
Now I have no idea what you are trying to do. For the mean by group,
egen mby=mean(num_typ3), by(zone wave)
but you are referring to (probably) nonexistent row and column numbers
of a matrix in your example.

On Fri, Sep 2, 2011 at 10:42 AM, Alvarez,Sergio <[email protected]> wrote:
> Thanks Austin and Nick for your help.  I used what Austin suggested (which
> is what Nick also suggested) and it worked. However, when I try to create
> the variable that contains the mean by group it works for some observations,
> but missing values are created for most of them.  I tried both:
> gen meancatch = TABLE[zone,wave]
> and
> gen meancatch = TABLE[byv,num_typ3]
> For the first line of code, it creates the correct value for all
> observations where wave = 1, but not for any others.  The second line
> creates missing values at random (as far as I can tell).
> I'd appreciate any tips.

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