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

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

Subject |
st: AW: RE: AW: how to reconstruct a minimum acceptable income from a set of binary variables? |

Date |
Sun, 1 Mar 2009 20:55:08 +0100 |

<> Yet another variation, playing around with -mata- ************* clear* input id mindesinc_500_999 mindesinc_1000_1499 mindesinc_1500_1999 101 1 0 0 0 102 0 1 0 0 103 0 0 1 0 104 0 0 1 0 105 0 1 0 0 end mata // get view onto the data st_view(X=.,., (" mindesinc_500_999", " mindesinc_1000_1499", " mindesinc_1500_1999")) // column vector of lower bounds for minimum desired income Y=(500\1000\1500) // calculate vector of lbs for each individual Z=X*Y // need new var for minimum desired income st_addvar("float", "mindesinc") //push results back to newly created Stata variable st_store((1,5),"mindesinc",Z) end * back in Stata, let`s see l ************* On the occasion, does Stata not color lines in red in the review window that resulted in errors in -mata-? That would be useful... HTH Martin -----Ursprüngliche Nachricht----- Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Nick Cox Gesendet: Sonntag, 1. März 2009 20:32 An: statalist@hsphsun2.harvard.edu Betreff: st: RE: AW: how to reconstruct a minimum acceptable income from a set of binary variables? A variation on the same idea: gen min = 500 foreach v in 1000 1500 2000 { replace min = `v' if mindesinc_`v' == 1 } To be careful, check egen row = rowtotal(mindesinc*) assert row == 1 Nick n.j.cox@durham.ac.uk Martin Weiss *reconstruct Ekaterina`s data clear* input id mindesinc_500_999 mindesinc_1000_1499 mindesinc_1500_1999 101 1 0 0 0 102 0 1 0 0 103 0 0 1 0 104 0 0 1 0 105 0 1 0 0 end *construct the minimum desired income g mindesinc=500 if mindesinc_500_999 replace mindesinc=1000 if mindesinc_1000_1499 replace mindesinc=1500 if mindesinc_1500_1999 l Ekaterina Hertog I am dealing with a dataset from a private company and so my data often comes in rather strange format and I now came against the following problem: I have a set of individuals who answered questions about desired income. It looks as follows: Individ nmb | Min desired income 500 - 999 | 1000 - 1499 | 1500 - 2000 | 101 | 0 | 0 | 1 | 102 | 0 | 1 | 1 | 103 | 0 | 0 | 1 | 104 | 1 | 1 | 1 | 105 | 0 | 1 | 1 | Is there a way to automatically recode these binary minimum desired income variables into a numerical variable which would state the minimum acceptable figure for each individual? That is some routine which would check "Min desired income 500 - 999" and if it equals 1 then would input 500 for the individual in question into a newly constructed variable "Minimum acceptable income" and move on to the next person and if it equals 0 would look at the value of "1000 - 1499" variable and if it equals 1 would input 1000 for that person and move on to the next person and if it is 0 would look at "1500 - 2000" variable? * * 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: how to reconstruct a minimum acceptable income from a set of binary variables?***From:*Ekaterina Hertog <ekaterina.hertog@sociology.ox.ac.uk>

**st: AW: how to reconstruct a minimum acceptable income from a set of binary variables?***From:*"Martin Weiss" <martin.weiss1@gmx.de>

**st: RE: AW: how to reconstruct a minimum acceptable income from a set of binary variables?***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

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