[EMAIL PROTECTED] writes:
> Full_Name: Axel Rasche
> Version: 2.2.0
> OS: Linux
> Submission from: (NULL) (141.14.21.81)
>
>
> Dear Debuggers,
>
> This is not a serious problem. Are 0/1 vectors intended to be used as index
> vectors? If yes, there is a bug. If not, it leads just to some funny behaviour
> rather than an error message.
>
> In the appendix is some simple code to reproduce the problem. A logical vector
> as.logic(a) helps by indexing the vector b. The 0/1 vector a just returns the
> first value "a". But as many times as there is a 1 in a.
Yes, that is completely as intended. Zeros in a numerical index vector
produce nothing and ones produce the first element. The documentation
could arguably be better on this point though.
> Best regards,
> Axel
>
>
> Appendix:
>
> b = c("a","b","c","d")
> a = c(0,1,1,0)
> b[as.logical(a)]
> b[a]
> a = c(1,0,1,0)
> b[as.logical(a)]
> b[a]
> a = c(0,1,1,1)
> b[as.logical(a)]
> b[a]
>
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>
--
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c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
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