Notice: On March 31, it was **announced** that Statalist is moving from an email list to a **forum**. The old list will shut down on April 23, and its replacement, **statalist.org** is already up and running.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

From |
Prakash Singh <prakashbhu@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: changing values of a string variable |

Date |
Tue, 24 Apr 2012 14:26:41 +0530 |

Thanks Nick for putting my words in a neat way. I am not convince why use the command replace firm1 = . if firm1 != "id_131":firm1 when you can use replace firm1 = . if firm1 != 1 (suppose the value correnponding to the value lebel id_131 is 1 which one can easly get to know) Prakash On Tue, Apr 24, 2012 at 1:47 PM, Ronnie Babigumira <rb.glists@gmail.com> wrote: > Nick, this is neat, thanks. > > Tashi, this is certainly closer to what you had in mind > > encode firms, gen(firm1) > replace firm1 = . if firm1 != "id_131":firm1 > > Ronnie > > -- > 010100100110111101101110011011100110100101100101 > > > > > On Tuesday, April 24, 2012 at 9:52 AM, Nick Cox wrote: > >> Prakash's opening statement is incorrect. If you -encode- a string >> variable, it loses no property and indeed stays exactly as it is. What >> happens is that a numeric variable is created with value labels equal >> to the string values. >> >> Tashi appears to be seeking something like the last line here >> >> sysuse auto >> label def rep78 1 appalling 2 adequate 3 average 4 amazing 5 astounding >> label val rep78 >> >> . count if rep78=="average":rep78 >> 30 >> >> For more, see in [U] and e.g. >> >> SJ-4-4 dm0009 . . . . . . . Stata tip 14: Using value labels in expressions >> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . K. Higbee >> Q4/04 SJ 4(4):488--489 (no commands) >> tips for using value labels in expressions >> >> Ken Higbee's paper is accessible at >> >> http://www.stata-journal.com/sjpdf.html?articlenum=dm0009 >> >> This syntax has been in Stata a very long time. I don't use it, partly >> because I keep forgetting about it and partly because I would need to >> look it up to remember what it is, and my wild guess is that many >> experienced users would say something similar. >> >> Nick >> >> >> Prakash Singh [edited slightly] >> >> > when you -encode- any variable it loses its string property so >> > there would be numeric value corresponding to id_131 in firms1 and you >> > should use that value in your command line >> >> >> >> tashi lama >> >> > > I found matters similar to what I am going to post have been been discussed in the past but I am not sure if I understood. Here is my dataset >> > > >> > > hits firms >> > > 3 id_6429 >> > > 10 id_131 >> > > 8 id_2837 >> > > >> > > 12 id_90 >> >> > > The problem is to have sth like this >> > > >> > > hits firms >> > > >> > > 3 . >> > > >> > > 10 id_131 >> > > 8 . >> > > >> > > 12 . >> > > >> > > >> > > so I said 1. encode firm, gen(firm1) >> > > >> > > replace firm1=. if firm1!=id_131 >> > > >> > > drop firms >> > > >> > > I also tried 2. replace firms="" if firms!="id_131" >> >> > > It didn't give me the expected output although I feel like my codes are correct at least in principle. Any idea? >> >> * >> * For searches and help try: >> * http://www.stata.com/help.cgi?search >> * http://www.stata.com/support/statalist/faq >> * http://www.ats.ucla.edu/stat/stata/ > > > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: changing values of a string variable***From:*Ronnie Babigumira <rb.glists@gmail.com>

**Re: st: changing values of a string variable***From:*Nick Cox <njcoxstata@gmail.com>

**References**:**st: changing values of a string variable***From:*tashi lama <ltashi32@hotmail.com>

**Re: st: changing values of a string variable***From:*Prakash Singh <prakashbhu@gmail.com>

**Re: st: changing values of a string variable***From:*Nick Cox <njcoxstata@gmail.com>

**Re: st: changing values of a string variable***From:*Ronnie Babigumira <rb.glists@gmail.com>

- Prev by Date:
**Re: st: conditional SE of y|X in glm** - Next by Date:
**RE: st: Post codes to locality** - Previous by thread:
**Re: st: changing values of a string variable** - Next by thread:
**Re: st: changing values of a string variable** - Index(es):