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Luca Campanelli <email@example.com>
Thu, 6 Dec 2012 01:00:56 +0000 (GMT)
Dear Stata users,
I have a string variable "word" with 4000 words, and I'd like to create 1000 groups of 4 randomly selected words (the group of words will be trials in an experimental task). I also have info about the number of characters of each word.
ID WORD CHR
1 acorn 5
2 address 7
3 adult 5
One way to do it could be:
generate rdm = runiform()
egen group = seq(), from(1) to(1000) block(1)
My question is if I can constrain the groups to meet a certain criterion: I'd like that each group of words has a total number of characters between given limits, for example between 18 and 28 total number of characters. I mean that I don't want groups with 4 short words or groups with 4 long words.
Do you know if there is any way to do it?
Thank you for any help anybody can provide.
PS I have Stata IC 12.1 on Windows 7.
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