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From |
"Austin Nichols" <austinnichols@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: expanding numlist |

Date |
Mon, 2 Jul 2007 11:01:03 -0400 |

Radu Ban <raduban@gmail.com>: One way forward is to insert an equals sign to force evaluation rather than assignment, and use no quotes to trip up -foreach-. There is almost certainly a better way of doing this task, though--if you post a description of the larger problem, you may get more guidance. Note also you do not need -count-. input groupid str20 list 1 "3 8 9 10" 2 "5/9 11 23/27" 3 " 6 7/10" end local end = _N forvalues i=1/`end' { local numbers=list[`i'] foreach n of numlist `numbers' { di `n' /*just to test if this works*/ } } You can also do the evaluation on the fly: clear input groupid str20 list 1 "3 8 9 10" 2 "5/9 11 23/27" 3 " 6 7/10" end forvalues i=1/`=_N' { foreach n of numlist `=list[`i']' { di `n' } } On 7/2/07, Radu Ban <raduban@gmail.com> wrote:

Dear listers, I have two variables: groupid and list. "groupid" identifies the group and "list" is numeric list of members. For example: groupid list 1 3 8 9 10 2 5/9 11 23/27 3 6 7/10 ... ... Now "list" is always a valid numlist (because I entered it as such). I want to get this data into a long format (i.e. expand "list" for each "groupid"). But I'm having troubles from the start, I can't even get Stata to read in each observation of "list" as a numlist. For example I tried the following piece of code. count local end = r(N) forvalues i=1/`end' { local numbers "list[`i']" foreach n of numlist `numbers' { di `n' /*just to test if this works*/ } } this gives me an error: invalid numlist Setting the trace on, I see that foreach n of numlist `numbers' { is processed as foreach n of numlist list[1] { which is clearly an invalid -numlist- However, when I try this: count local end = r(N) forvalues i=1/`end' { local numbers "list[`i']" di `numbers' } I get a list of all the observations in "list", so `numbers' is being read as the content of list[`i']. So I am puzzled why `numbers' cannot be read as a -numlist- So my direct question is how to read in "list" as numeric list. I think once I do this I can manage to do my reshape. Thanks, Radu * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

* * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: expanding numlist***From:*"Radu Ban" <raduban@gmail.com>

**References**:**st: expanding numlist***From:*"Radu Ban" <raduban@gmail.com>

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