[R] simple question with table()

[Chuck Cleland]

On 11/30/2008 5:05 AM, Simone Gabbriellini wrote:
> Dear List,
> 
> my problem should be easy to fix, but I couldn't find a solution by
> myself...
> 
> In my survey, there is a question with 14 possible answers. None of the
> respondents choose the 13th answer, so when I table() the results, R says:
> 
> 1    2    3    4    5    6    7    8    9    10    11    12    14
> 31    52    7    21    40    7    8    2    28    2    2    1    17
> 
> 13 is missing... anyone knows how to tell table() that there are 14
> modalities in the answers? I tried with
> 
> responseName=c("1","2","3","4","5","6","7","8","9","10","11","12","13","14")
> 
> 
> but all I have is:
> 
> error in table....
> all the arguments must have the same length

  Make the responses to the question a factor and set the levels of the
factor to include all 14 possible answers.  For example:

> table(factor(rep(c('1','2'), each=7), levels=c('1','2','3')))

1 2 3
7 7 0

?factor

> thank you,
> Simone
> 
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-- 
Chuck Cleland, Ph.D.
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