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From |
"Scott Merryman" <scott.merryman@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Data file restructure |

Date |
Mon, 8 Dec 2008 10:26:23 -0600 |

Something like this? clear input id m81 m82 m85 a81 a82 a85 1 1.5 1.75 2 16 17 20 2 2.3 2.5 2.6 17 18 21 3 1.8 2 2.3 24 25 28 end reshape long m a, i(id) j(year) l drop year rename m y reshape wide y , i(id ) j(a) l Scott On Mon, Dec 8, 2008 at 7:25 AM, Michael Beets <beetsstatalist@gmail.com> wrote: > Data transformation > > > > I have a wide formatted data set (each row is an individual measured > over time) containing 15 measurements beginning at 1981 and ending at > 2006 (example: m81, m82, m85, m86… m2006). At the initial year of > measure (1981) the age range of individuals spanned 16 to 24yrs-old. > The age of each individual at each measurement occasion is in 15 age > variables (example: a81, a82, a85, a86… a2006). > > > > What I want to do is restructure the dataset so age (in years) is the > variable with the measurement value listed for each individual. > > > > Here is an example of what I think this would look like: > > > > Current dataset: > > Id m81 m82 m85 a81 a82 a85 > > 1 1.5 1.75 2 16 > 17 20 > > 2 2.3 2.5 2.6 17 > 18 21 > > 3 1.8 2 2.3 24 > 25 28 > > > > > > Restructured dataset > > Id y16 y17 y18 …. Y20 > y21 y22 y23 y24 y25 … > y28 > > 1 1.5 1.75 2 > > 2 2.3 2.5 > 2.6 > > 3 > 1.8 > 2 2.3 > > > > I've attempted to use "reshape" but this does not seem to give me the > data structure I am after. I also attempted to write some code using > "gen y16 = m81 if a81==16", but this cumbersome and subject to error. > Is there an easier set of commands to restructure the data as > indicated above? > > 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/ > * * 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: Data file restructure***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

**References**:**st: Data file restructure***From:*"Michael Beets" <beetsstatalist@gmail.com>

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