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st: how to write loop program for each value of a variable?


From   econqian222 <maguixianstatalist@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: how to write loop program for each value of a variable?
Date   Thu, 3 May 2012 06:28:30 -0700 (PDT)

Hi, statalist
     I want to write a loop program for each value of a variable, such as
     a loop program about variable "v","q", "p" by the value of code(1,2,3),
the data is listed as following:
code	v	q	p
1	4.65605	3.82133	.5891969
1	8.55465	3.273241	.1132121
1	.5072982	3.273241	.1132121
2	.0668553	3.781385	.112315
2	4.346485	3.999861	.1429252
2	.453282	3.389864	.27451
3	2.514498	2.554792	.432496
3	5.027869	3.869841	.1236284
.	.	.	.
.	.	.	.
.	.	.	.

Then how to write such loop program?

Many thanks,
Qian

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