[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

From |
"NEYMOTIN, FLORENCE" <neymotin@calmail.berkeley.edu> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: missing values |

Date |
Wed, 21 Sep 2005 23:11:21 -0700 |

Here are my exact commands. replace sswlnw_1 = .a if (yob > 1912 & a_age > 69) replace sswlol_1 = .a if (yob > 1912 & a_age > 69) replace sswlnw_2 = .a if (yob > 1912 & a_age > 69) replace sswlol_2 = .a if (yob > 1912 & a_age > 69) If I use . instead of .a, 0 changes are made. (With .a, 57981 changes re made) If I say gen dummy = 0 replace dummy = 1 if (yob > 1912 & a_age > 69) then 57891 changes are made... On Thu, 22 Sep 2005 00:31:41 -0500 Richard Williams <Richard.A.Williams.5@ND.edu> wrote:

At 11:11 PM 9/21/2005, NEYMOTIN, FLORENCE wrote:Hi, is it normal to have a problem with recoding things to missing values based on some sort of boolean condition. I checked the condition several times, and when I write: "gen extra=0 if(condition)" then this gives me the correct values. If, however, I write: "replace mainvar=. if (condition)" then this does not work. The problem was solved by doing "replace mainvar=.a" this seems strange to me and I'm not sure why it's happening. any suggestions?Maybe you could show us your exact commands? Or a replicable example using the auto data or something like that? I just tried a few things and it seemed to work fine. Are you sure you are specifying the conditions correctly, e.g. you are using == instead of = ?

thanks,

Florence

-------------------------------------------

Richard Williams, Notre Dame Dept of Sociology

OFFICE: (574)631-6668, (574)631-6463

FAX: (574)288-4373

HOME: (574)289-5227

EMAIL: Richard.A.Williams.5@ND.Edu

WWW (personal): http://www.nd.edu/~rwilliam

WWW (department): http://www.nd.edu/~soc *

* 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/

**Follow-Ups**:**Re: st: missing values***From:*Richard Williams <Richard.A.Williams.5@ND.edu>

**Re: st: missing values***From:*Richard Williams <Richard.A.Williams.5@ND.edu>

**References**:**st: missing values***From:*"NEYMOTIN, FLORENCE" <neymotin@calmail.berkeley.edu>

**Re: st: missing values***From:*Richard Williams <Richard.A.Williams.5@ND.edu>

- Prev by Date:
**Re: st: missing values** - Next by Date:
**st: Panel Fixed effects collinearity problem** - Previous by thread:
**Re: st: missing values** - Next by thread:
**Re: st: missing values** - Index(es):

© Copyright 1996–2017 StataCorp LLC | Terms of use | Privacy | Contact us | What's new | Site index |