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From |
Ronnie Babigumira <rb.glists@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: generate a new categorical variable |

Date |
Thu, 13 Sep 2012 22:16:15 +0200 |

Your code works just fine using this small dummy dataset clear input Y str1 Z 1 A 1 B 0 C 1 D 1 Y end gen X=0 if Y==0 replace X=1 if Y==1 & Z=="A" replace X=2 if Y==1 & Z=="B" replace X=3 if Y==1 & Z=="C" replace X=4 if Y==1 & Z=="D" list Y Z X 1. 1 A 1 2. 1 B 2 3. 0 C 0 4. 1 D 4 5. 1 Y . PS: You may find -help cond- or even better http://www.stata-journal.com/sjpdf.html?articlenum=pr0016 useful for this type of problem -- 010100100110111101101110011011100110100101100101 On Thursday, September 13, 2012 at 9:53 PM, urbain thierry YOGO wrote: > Dear all > i have two variables Y and Z. Y is a dummy variable which takes 1 if > individual has access to water and 0 otherwise. Z is a categorical > variable which has the following structure: > Z=A if individual uses bleach to clean water > Z=B if individual use a filter to clean water > Z=C if individual use solar energy to clean water > Z=D if individual use absorbent cotton to clean water > > Here is my problem. I want to generate a new variable X which should > be a combination of Y and Z. Here is the code i have written > gen X=0 if Y==0 > replace X=1 if Y==1 & Z=="A" > replace X=2 if Y==1 & Z=="B" > replace X=3 if Y==1 & Z=="C" > replace X=4 if Y==1 & Z=="D" > > My concern is that when i write this code, the first two lines work, > but after, there is 0 replacement. Please can somebody help me? Thank > > -- > *Urbain Thierry YOGO > Ph.D candidate in Economics* > * > * 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: generate a new categorical variable***From:*urbain thierry YOGO <yogout@gmail.com>

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