From murdoch at stats.uwo.ca  Wed Dec  9 12:34:32 2009
From: murdoch at stats.uwo.ca (Duncan Murdoch)
Date: Wed, 09 Dec 2009 06:34:32 -0500
Subject: [Rd] binary string conversion to a vector (PR#14120)
In-Reply-To: <20091209043512.109702831FEE@mail.pubhealth.ku.dk>
References: <20091209043512.109702831FEE@mail.pubhealth.ku.dk>
Message-ID: <4B1F8B48.1000708@stats.uwo.ca>

brglez at ncsu.edu wrote:
> Full_Name: Franc Brglez
> Version: R 2.9.1 GUI 1.28 Tiger build 32-bit (5444)
> OS: MacOSX -- 10.6.2
> Submission from: (NULL) (24.148.163.114)
>
>
> I am demonstrating what may be a bug or my lack of experience. Please review as
> it would help to hear from someone.
>   

It is your lack of experience.  Please do not abuse the bug reporting 
system.

Duncan Murdoch
> MANY THANKS -- Franc Brglez
>
> The function "binS2binV" returns what I consider a wrong value -- see the
> terminal output
>
> binS2binV = function(string="0001101", sep="") 
> # this procedure is expected to convert a binary string to a binary vector ...
> # but does it?? Why do we get a vector with quoted binary values??
> {   
>     qlist = strsplit(string, sep)
>     qvector = qlist[[1]]
>     cat("\n  string=", string)
>     cat("\n qvector=", qvector)
>     n = length(qvector) ; xvector = NULL
>     for (i in 1:n) {
> 	tmp = noquote(qvector[i])
> 	cat("\n", i,",     tmp=", tmp)
> 	xvector = c(xvector, tmp)
> 	cat("\n", i,", xvector=", xvector)
>     }
>     cat("\n")
>     return(xvector)
> }
>
>   
>> print(binS2binV("10101100"))
>>     
>
>   string= 10101100
>  qvector= 1 0 1 0 1 1 0 0
>  1 ,     tmp= 1
>  1 , xvector= 1
>  2 ,     tmp= 0
>  2 , xvector= 1 0
>  3 ,     tmp= 1
>  3 , xvector= 1 0 1
>  4 ,     tmp= 0
>  4 , xvector= 1 0 1 0
>  5 ,     tmp= 1
>  5 , xvector= 1 0 1 0 1
>  6 ,     tmp= 1
>  6 , xvector= 1 0 1 0 1 1
>  7 ,     tmp= 0
>  7 , xvector= 1 0 1 0 1 1 0
>  8 ,     tmp= 0
>  8 , xvector= 1 0 1 0 1 1 0 0
> [1] "1" "0" "1" "0" "1" "1" "0" "0"  <== what I want is "unquoted" binary
> values
>
> on the other hand, similar, NOT-THE-SAME but related, "conversions" are working,
> e.g.
> # seq = "1 0 0 1 0"
> #> seq
> # [1] "1 0 0 1 0"
> #> strsplit(paste(seq), " ")
> # [[1]]
> # [1] "1" "0" "0" "1" "0"
> #> paste(strsplit(paste(seq), " ")[[1]], collapse="")
> # [1] "10010"
> #       
> #> seq=c(0,0,0,1,1,0,1)
> #> seq
> # [1] 0 0 0 1 1 0 1
> #> paste(strsplit(paste(seq), " "), collapse="")
> # [1] "0001101"
>
> ______________________________________________
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> https://stat.ethz.ch/mailman/listinfo/r-devel
>



[Rd] binary string conversion to a vector (PR#14120)
Duncan Murdoch