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From |
Eric Booth <ebooth@ppri.tamu.edu> |

To |
"<statalist@hsphsun2.harvard.edu>" <statalist@hsphsun2.harvard.edu> |

Subject |
Re: st: basic question |

Date |
Tue, 23 Aug 2011 01:46:34 +0000 |

<> Nadine: You received several, similar answers about your issue. In addition to all these and the help files for -sum()- and -egen-, take a look at Nick Cox's 2002 article "Speaking Stata: On getting functions to do the work." Stata Journal 2: 411–427. (Free due to SJ's moving pay wall at: http://www.stata-journal.com/sjpdf.html?articlenum=pr0007 ) - Eric On Aug 22, 2011, at 8:24 PM, Nadine Brooks wrote: > But it is not what is happening. Take a look: > > sum v9532 v9982 v1022 > > Variable | Obs Mean Std. Dev. Min Max > -------------+-------------------------------------------------------- > v9532 | 170014 831.5625 1451.442 3 120000 > v9982 | 8326 686.3957 1179.807 1 48000 > v1022 | 672 957.75 1422.576 8 11000 > > . gen sal= (v9532+v9982+v1022) > (409603 missing values generated) > > . sum v9532 v9982 v1022 sal > > Variable | Obs Mean Std. Dev. Min Max > -------------+-------------------------------------------------------- > v9532 | 170014 831.5625 1451.442 3 120000 > v9982 | 8326 686.3957 1179.807 1 48000 > v1022 | 672 957.75 1422.576 8 11000 > sal | 638 3999.621 4536.377 68 40000 > > > My variables meas: > > v9532: income from main job > v9982: income from secondary job > v1022: third or more of income jobs > > But most of the people have only one job, so they get missing to v9982 > and v1022... > > Thanks, Nadine > > > 2011/8/22 Daniel Marcelino <dmsilv@gmail.com>: >> Well, I don't know exactly what yours variables means. >> If you have numeric values, you result should be: >> v1 v2 v3 sal >> 1 2 3 6 >> 1 . 1 2 >> >> >> Daniel >> >> On Mon, Aug 22, 2011 at 9:11 PM, Nadine Brooks <nb.statalist@gmail.com> wrote: >>> By there are missing values particularlly in v9102 and v1022, so I >>> think that I can not use the operator +, can I? >>> >>> >>> >>> 2011/8/22 Daniel Marcelino <dmsilv@gmail.com>: >>>> try >>>> >>>> gen sal= (v9535 + v9102 + v1022) >>>> >>>> Daniel >>>> >>>> >>>> On Mon, Aug 22, 2011 at 8:54 PM, Nadine Brooks <nb.statalist@gmail.com> wrote: >>>>> Hi statalist >>>>> >>>>> I am a beginner Stata user and I am having trouble to generate a new >>>>> variable. I am using: >>>>> gen sal=sum (v9535,v9102,v1022) >>>>> and I am getting: v9535,v9102,v1022 invalid name >>>>> r(198); >>>>> >>>>> But the names of all the variables are correct, so what I am doing wrong? >>>>> >>>>> Thanks >>>>> * >>>>> * 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/ >>>>> >>>> >>>> >>>> >>>> -- >>>> About me: http://danielmarcelino.zip.net/ >>>> >>>> * >>>> * 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/ >>> >> >> >> >> -- >> About me: http://danielmarcelino.zip.net/ >> >> * >> * 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: basic question***From:*Phil Clayton <philclayton@internode.on.net>

**References**:**st: basic question***From:*Nadine Brooks <nb.statalist@gmail.com>

**Re: st: basic question***From:*Daniel Marcelino <dmsilv@gmail.com>

**Re: st: basic question***From:*Nadine Brooks <nb.statalist@gmail.com>

**Re: st: basic question***From:*Daniel Marcelino <dmsilv@gmail.com>

**Re: st: basic question***From:*Nadine Brooks <nb.statalist@gmail.com>

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