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

st: creating lag variable


From   "sarah smith" <sarah22209@hotmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: creating lag variable
Date   Wed, 09 Jun 2004 03:48:55 +0000

Dear Stata users;

I am trying to create a lag variable

y(t) = x(t-1)

I searched for a lag function but could not find. Any suggestions?
Thanks,
Sarah

From: Roger Newson <roger.newson@kcl.ac.uk>
Reply-To: statalist@hsphsun2.harvard.edu
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: Tempvars with ylabel
Date: Tue, 08 Jun 2004 20:32:54 +0100

At 19:35 08/06/2004, Doug A. Simmons wrote:
Is it possible to use tempvars (or some other Stata variable) to specify
values with the -ylabel- command? I have tried
-tempvar Mean-
-ylabel(`Mean', axis(2))-
but it gives me the error
"invalid label specifier, :  __000000:".

It appears to be evaluating to the macro name, but not the stored
value. I have tried using compound quotes, but get similar results.

I am attempting to build a .do file that will automate the graphing of
data that varies such that `Mean' could be different at each run of the
file. I use -graph twoway line `Mean'- to generate a reference line on
my graph and it works as expected. It just doesn't seem quite right to
me that I can use the temporary variable to draw the graph, but not to
label it.

Thank you for your assistance.
Doug might like to use my -regaxis- package, downloadable from SSC, which inputs one or more variables and/or values which must be in the axis range and creates a set of axis labels as output in a macro. The package contains 2 programs, -regaxis- for regular linear axes and -logaxis- for regular logarithmic axes. In Stata, type

ssc describe regaxis

to find out more.

I hope this helps.

Roger


--
Roger Newson
Lecturer in Medical Statistics
Department of Public Health Sciences
King's College London
5th Floor, Capital House
42 Weston Street
London SE1 3QD
United Kingdom

Tel: 020 7848 6648 International +44 20 7848 6648
Fax: 020 7848 6620 International +44 20 7848 6620
or 020 7848 6605 International +44 20 7848 6605
Email: roger.newson@kcl.ac.uk
Website: http://www.kcl-phs.org.uk/rogernewson

Opinions expressed are those of the author, not the institution.

*
* 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/
_________________________________________________________________
Get fast, reliable Internet access with MSN 9 Dial-up now 3 months FREE! http://join.msn.click-url.com/go/onm00200361ave/direct/01/

*
* 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 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index