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st: question regarding Syntax command


From   Pradipto Banerjee <pradipto.banerjee@adainvestments.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   st: question regarding Syntax command
Date   Mon, 25 Jun 2012 11:10:58 -0500

Assume a code for an ado file is as follows:

program define MyFunc
        ...
        gen MyOutVar = ...
end

the function MyFunc was a few variables can be called as "MyFunc MyInVar1 MyInVar2" and then after calling the function a column MyOutVar is generated in the database.

(1) I want to the MyFunc written in Stata to take the output variable MyOutVar as a input, i.e. instead of defining "gen MyOutVar" I want to let the user choose the variable name corresponding. Can I potentially define an "option" like "genvar(MyOutVar)" while calling the function MyFunc, i.e. call the function as "MyFunc MyInVar1 MyInVar2, genvar(MyOutVar)"

How can I implement this?


(2) I am used to Matlab where once we define a functions say MyFunc and the functions is supposed to return a variable, then we call them as MyOutVar = MyFunc (MyInVar1, MyInVar2, ...). It is possible to do the same in Stata, i.e. can I define a Stata program to recognize the "=" sign as a part of the syntax, and the function is called as "MyOutVar = MyFunc (MyInVar1, MyInVar2)" ?

Thanks,
P.







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