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From |
Dani Tilley <tilleydani@yahoo.com> |

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

Subject |
st: Re: Storing output from a loop in only one variable |

Date |
Thu, 8 Jul 2010 09:16:26 -0700 (PDT) |

Hi Eric, Thanks for your reply. Unfortunately, this doesn't give me what I'm looking for. With the correction you pointed below, I get an x variable that only has the output from the first loop on ALL its entries. I'm rather looking for a variable that has -a- entries (the output from each loop on each line) and -N-a- missing values. Incidentally, could anyone tell me why I'm getting this error: gen x=. gen int t=2 replace x=123 in t 't' invalid obs no r(198); what is a valid obs no apart from actual integers plugged in? If I can figure out a way to generate a variable that would not trigger this error, I can then replace var=var+i and solve the problem I have. Thanks, Dani ----- Original Message ---- <> Sorry, that should be "x", not "`x'" in the line: > replace x = `a' if !mi(`a') & mi(`x') ~ Eric From: Dani Tilley <tilleydani@yahoo.com> To: stata <statalist@hsphsun2.harvard.edu> Sent: Thu, July 8, 2010 11:32:19 AM Subject: Storing output from a loop in only one variable Hi, I'm trying to store certain output in a new variable while I loop through different categories. At the end I want to average what I've stored and perhaps do some other manipulations. Right now, my code looks like this: foreach a in {range} { ... gen x`a'={output} in 1 ... } su x*, mean di r(mean) drop x* So I create `a' variables that have the desired output as their 1st observations and N-1 missing points. I then average across these variables and drop them. While this gets the job done, I feel it's very clumsy. I'm looking to create a single variable, x, that will hold all `a' outputs. Something like scalar i=1 foreach a in {range} { ... gen x={output} in i i++ //or i=i+1 } Thanks, DF Tilley * * 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: Re: Storing output from a loop in only one variable***From:*Eric Booth <ebooth@ppri.tamu.edu>

**st: RE: Re: Storing output from a loop in only one variable***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

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