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From |
"Radu Ban" <raduban@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: expanding numlist |

Date |
Mon, 2 Jul 2007 11:38:08 -0400 |

Thanks, this did the trick. -Radu 2007/7/2, Austin Nichols <austinnichols@gmail.com>:

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/

* * 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/

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

**Re: st: expanding numlist***From:*"Austin Nichols" <austinnichols@gmail.com>

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