Stata The Stata listserver
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: Re: RE: may not use time-series operators on string variables


From   "Lee Chuntao" <[email protected]>
To   <[email protected]>
Subject   st: Re: RE: may not use time-series operators on string variables
Date   Wed, 3 Jul 2002 22:50:22 +0800

But Why shoud my variable be numeric, that is not reasonable. In fact, my variable is industry code, never ever be numeric.

I do not think Nick's answer helpful

In this aspect, i think stata should admit its shortcomings and fix the problem asap


----- Original Message ----- 
From: "Nick Cox" <[email protected]>
To: <[email protected]>
Sent: Wednesday, July 03, 2002 9:53 PM
Subject: st: RE: may not use time-series operators on string variables


> Lee Chuntao
> > 
> >    In my dataset there is a variable v1, which is a string 
> > variable. I try to use l.v1, after i set the time variable (eg, 
> > tsset time). I don't know why stata do not permit timeseries 
> > operators on string variables, it seems not reasonable for the 
> > lag or lead operators, beyond the difference operators
> > 
> > i wonder if there is some sort way so that i can use the laged 
> > string variable?
> 
> Yes. -destring- your string variable first. Stata quite reasonably
> wants you to have your variables with numeric meaning held as numeric. 
> 
> Nick 
> [email protected] 
> *
> *   For searches and help try:
> *   http://www.stata.com/support/faqs/res/findit.html
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/
*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2024 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index