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st: RE: RE: user input as scalar value


From   "Rajesh Tharyan" <[email protected]>
To   <[email protected]>
Subject   st: RE: RE: user input as scalar value
Date   Thu, 26 Jun 2008 15:33:56 +0100

Hi,

Thank you very much Nick. That is exactly what I was looking for. 

Martin, I did think about the dialog box. i.e.  to have the do file open
with a dialog box where I set these different parameters. But my entire
program is spilt into 6 or 7 sub programs, that means I would lose the local
macros after each one runs, working around that and programming the dialog
box, seemed too much work for what I was trying to achieve. I wanted quite
simple. But, you are right it may be very useful in certain other
circumstances.


Thanks very much
rajesh






-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Nick Cox
Sent: 26 June 2008 14:53
To: [email protected]
Subject: st: RE: user input as scalar value

Yes, you can do this. 

A canonical exchange within the do file is 

di "Enter value for foo: " _request(foo) 

after which local foo contains the value typed. 

See -help display-. 

I'd rather take arguments from the command line, but that's a matter of
taste. 

Nick
[email protected] 

Rajesh Tharyan

I have a do file, wherein I have a few scalars which I am using to
expand,
loop , as cutoff limits etc. Is it possible to have the do file 
prompt the user to input the value of the scalar, so that I do not have
to
make the changes to the do file.

Suppose I had a do file like

Scalar a=5
......
Expand a
.......

Can I get stata to prompt the user like 

Enter the value for expansion : 
that input then gets stored as a
The code executes..


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