That provides a listing (with the change of "gen(mymac) to "local(mymac)" in
line 2). But it still does not seem to be a numlist that one can work with,
for example in graphing, e.g.,
line y1 y2 y3 x1, xline($mymac)
Peter
Peter J. Burke
Professor and Chair
Department of Sociology
University of California
Riverside, CA 92521-0419
Phone: 951/827-7198
Fax: 951/827-3330
[email protected] <mailto:[email protected]>
http://wat1203.ucr.edu <http://wat1203.ucr.edu>
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Fred Wolfe
Sent: Friday, February 25, 2005 1:43 PM
To: [email protected]
Subject: Re: st: creating a numlist from a variable
Here is a quick and dirty way to do it that requires no macro manipulation.
gen var2 = var1 if var1 != 0
levels var2,gen(mymac)
drop var1
Fred Wolfe
At 03:34 PM 2/25/2005, you wrote:
>I am trying to create a numlist, perhaps using a macro, that contains
>the non-zero entries from a particular variable. for example with data
>like the following excerpt
>
>case id var1
>...
> 34. | 34 0 |
> 35. | 35 0 |
> 36. | 36 36 |
> 37. | 37 0 |
> 38. | 38 0 |
> 39. | 39 0 |
> 40. | 40 0 |
> 41. | 41 0 |
> 42. | 42 42 |
> 43. | 43 0 |
> 44. | 44 0 |
>...
>
>I would like to create a numlist that contains "36 42" and omits the
>0's. I have tried
>
>. global place var1[1]
>. forvalues n = 2/38 {
> 2. global place $place " " var1[`n']
> 3. }
>
>. di $place
>1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
>36 0 0
>
>but the global "place" does not actually contain the numbers, and I
>cannot figure out how to omit the zeros with an ifcmd, which does not
>seem to be allowed with global statements.
>Does anyone have any suggestions?
>
>
>Peter J. Burke
>Professor and Chair
>Department of Sociology
>University of California
>Riverside, CA 92521-0419
>Phone: 951/827-7198
>Fax: 951/827-3330
>[email protected]
>http://wat1203.ucr.edu <http://wat1203.ucr.edu/>
>
>
>*
>* 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/
Fred Wolfe
National Data Bank for Rheumatic Diseases Wichita, Kansas
Tel (316) 263-2125 Fax (316) 263-0761
[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/
