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st: RE: Making a Matrix from Three Variables


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Making a Matrix from Three Variables
Date   Sun, 10 May 2009 15:48:35 +0100

There have been several elaborate solutions to this, but a very simple one may be enough -- using an official command only. 

I gather that each row and column combination (var1, var2) occurs once only. 

That being so, note that 

tab var1 var2 [aw=var3], matcell(matrix) 

yields a matrix. But see help on -limits-. 

Nick 
n.j.cox@durham.ac.uk 

Allan Joseph Medwick

I have three variables (var1, var2, var3).  I would like to create a
matrix where the values of var1 are the columns (ascending), the
values of var2 are the rows (also ascending), and the values of var3
are the elements in the matrix.  I know there must be a user defined
procedure out there to do this, but I haven't been able to find it.


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