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From |
Daniel Almar de Sneijder <dasneijder@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
st: How to use an independent grid to perform calculations for each observations |

Date |
Wed, 10 Oct 2012 15:21:36 -0400 |

Hello Stata, Does anybody perhaps know a way to perform calculations for each observant using a grid. More specific, I have variables that record the earnings of respondents, say RwIEARN50 ... RwIEARN99. I want to index these variables by using a grid. The trick is however that each observation refers to respondents. Each respondent has a different year of birth and year of eligibility and therefore a different indexing factor needs to be used. So basically I have a N-by-M matrix, call it S, with on the rows the indexing factor of the earnings at each year i = 1,...,N and on the columns the year eligibility j = 1,...,M Now I want to construct variables RwINDEX50 ... RwINDEX99 that record the indexing factor for all respondents 1....R (rows), which basically depend on the year of eligibility of each respondent and the name of the variable (50...99). In formula, this would correspond to: year of eligibility = date of birth of `r' + 62 replace RwINDEX`year'[`r'] = S[`year']['year of eligibility'] Basically this is something very simpel that can be done within 5 minutes with Matlab. In STATA however this looks like impossible? Thank you for the input. Regards, Daniel * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: How to use an independent grid to perform calculations for each observations***From:*Nick Cox <njcoxstata@gmail.com>

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