That has it exactly. thanks for your help
geoff
> Geoffrey,
>
> Have you considered a loop e.g.,
>
> matrix ALL = A1
> foreach i of numlist 2/448{
> matrix ALL = ALL\A`i'
> }
>
>
> -Brent
>
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Geoffrey Homer
> Sent: Thursday, January 01, 2009 11:27 AM
> To: [email protected]
> Subject: st: row joining matrices in a loop
>
> Hello All:
>
> I've been labouring over a stata problem for quite a while now. I have
> created a block diagonal matrix of instruments for each cross sectional
> unit of my panel dataset, and would like to row join or stack them into
> one large matrix. Each unit's instrument matrix is 8 columns and 5 rows,
> and i would rather not have to manually join each unit's instrument matrix
> by row as i have 448 units. Can anyone suggest a way to create my 5*448
> row matrix other than
>
>
> matrix ALL = [A1\A2....\A448}
>
> thanks for all you responses in advance
>
>
> geoffrey homer
> univeristy of victoria
> [email protected]
>
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