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From |
"Martin Weiss" <martin.weiss1@gmx.de> |

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

Subject |
st: AW: AW: Problems adding large numbers |

Date |
Wed, 28 Oct 2009 13:03:14 +0100 |

<> Note Nick`s SJ article on this point: http://www.stata-journal.com/sjpdf.html?articlenum=dm0022, in particular the last paragraphs... HTH Martin -----Ursprüngliche Nachricht----- Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Martin Weiss Gesendet: Mittwoch, 28. Oktober 2009 12:45 An: statalist@hsphsun2.harvard.edu Betreff: st: AW: Problems adding large numbers <> ************* clear* set obs 2 gen double HHID=16817000 gen PERNUM=4 replace PERNUM= 5 in 2 gen double x=HHID+PERNUM list, noo ************* HTH Martin -----Ursprüngliche Nachricht----- Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Shruti Kapoor Gesendet: Mittwoch, 28. Oktober 2009 06:54 An: statalist@hsphsun2.harvard.edu Betreff: st: Problems adding large numbers Hi All, I need some help, i have a huge individual level dataset. I am trying to generate a new variable x which is the sum of my household id(HHID) and person number in each household (PERNUM) for some condition if it is true. The problem i am facing is that at very large values of HHID lets say 16817000, if the PERNUM is 4 and 5 if should generate variable x = 16817004 and 16817005. What stata is doing is rounding off the numbers so that i am getting the same values for both PERNUM 4 and 5. This is a problem because it is no longer creating a unique value of X which i need. I string to convert the two variables into string and then creating x = HHID + PERNUM, but now i am getting answers like 1.68e10+05. How can i resolve this issue such that it creates a unique value for each individual in the household and x stays numeric? Any help would be appreciated. Thank You, Shruti * * 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/

**References**:**st: Problems adding large numbers***From:*Shruti Kapoor <kapoor@oxy.edu>

**st: AW: Problems adding large numbers***From:*"Martin Weiss" <martin.weiss1@gmx.de>

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