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st: How to add a new variable with a specified correlation structure


From   tiago.pereira@incor.usp.br
To   statalist@hsphsun2.harvard.edu
Subject   st: How to add a new variable with a specified correlation structure
Date   Tue, 8 Jul 2008 12:44:19 -0300 (BRT)

Dear Statalisters,

After checking in detail a number of sourcers (help files, manuals,
-corre2data- and -drawnorm-, among others) I could not find a solution to
my current problem.

I have an existent variable with n observations ~N(mu_1,sigma_1^2). Note
that I have all observations. In this respect, the objective is to
generate a second (artificial) variable also ~N(mu_2, sigma_2^2), but with
a specific correlation structure with the existent, non-artificial
variable.

The main difference from the procedures obtained with both -corre2data-
and -drawnorm- is that I have already  an existing variable and want to
generate a second one based on the former.

Is that task either too easy (that I cannot see how do accomplish it) or
to complicated to perform using Stata?

Thank you for your time.

All the best,

Tiago









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