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From |
"Nick Cox" <n.j.cox@durham.ac.uk> |

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

Subject |
RE: st: using arrays to make multiple indicator variables |

Date |
Sun, 14 Mar 2010 18:13:07 -0000 |

I guess Beth's allusion to Gouldner is a mangled fractional reference to William Gould's FAQ as mentioned by Scott. Another way to do it: foreach var of varlist mem* { gen `var'_r = 2 - `var' if inlist(`var', 1, 2) } Nick n.j.cox@durham.ac.uk Scott Merryman The problem is that `i' does not equal `n' -- as you have it `i' = 1 and `n' = 17 so the whole -while- loop bypassed. If you -set trace on- it will show the problem: . while `i' == `n' { 2. local var1 : word `i' of `array1' 3. local var2 : word `i' of `array2' 4. replace `var1' = 1 if `var2' == 1 5. replace `var1' = 0 if `var2' == 2 6. local i = `i' + 1 7. } - while `i' == `n' { = while 1 == 17 { local var1 : word `i' of `array1' local var2 : word `i' of `array2' replace `var1' = 1 if `var2' == 1 replace `var1' = 0 if `var2' == 2 local i = `i' + 1 } I suppose it should be -while `i' <= `n' {- .... I believe the 30 lines of code you have could be reduced to 3 with: foreach var of varlist mem* { gen `var'_r = cond(`var' == 1, 1, cond(`var' == 2, 0,.)) } Also -findit sas array- points to the FAQ "How do I implement SAS-like ARRAYs in Stata?" http://www.stata.com/support/faqs/data/arrays.html On Fri, Mar 12, 2010 at 11:51 AM, Beth Fussell <befeff@gmail.com> wrote: > I'm a new Stata user trying to convert my SAS programs. I've followed > the model Gouldner provides on using SAS-like arrays but it isn't working. > I'm not getting any useful error messages either. Can someone identify the > problem in my code * * 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: using arrays to make multiple indicator variables***From:*Beth Fussell <befeff@gmail.com>

**Re: st: using arrays to make multiple indicator variables***From:*Scott Merryman <scott.merryman@gmail.com>

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