Re: [Rd] dynamic creation of matrix objects (PR#7136)

From: Cliff Behrens <cliff_at_research.telcordia.com>
Date: Wed 28 Jul 2004 - 06:07:12 EST

Thanks to all of you for your suggestion to use "assign" instead.

Cliff Behrens

Liaw, Andy wrote:

>How is this a bug? You get exactly what you _should_ get (or otherwise it
>might have been a legitimate bug report).
>
>I suspect what you really should use is assign().
>
>Andy
>
>
>
>>From: cliff@research.telcordia.com
>>
>>I am trying to assign the values in a matrix to an object
>>whose name is
>>created dynamically, i.e., using eval-parse-text-paste sequence. It
>>seems that only the very last value in the matrix is assigned
>>to the new
>>object. I have included an example below where I create a
>>matrix object
>>called "aMat". I can assign the contents of aMat to another object
>>called "thisMat." However, when I attempt to make a similar
>>assignment
>>to a new object called "thatMat", only the last value is
>>returned, when
>>queried. Does anybody know whether this is a bug...or am I doing
>>something wrong?
>>
>>Cliff Behrens
>>
>> > aMat<- matrix(c(1,2,3,4,5,6,7,8),ncol=2)
>> > aMat
>> [,1] [,2]
>>[1,] 1 5
>>[2,] 2 6
>>[3,] 3 7
>>[4,] 4 8
>> > thisMat<- aMat
>> > thisMat
>> [,1] [,2]
>>[1,] 1 5
>>[2,] 2 6
>>[3,] 3 7
>>[4,] 4 8
>> > tName<-"that"
>> > eval(parse(text=paste(tName,"Mat <-",aMat,sep="")))
>> > thatMat
>>[1] 8
>> >
>>
>>______________________________________________
>>R-devel@stat.math.ethz.ch mailing list
>>https://www.stat.math.ethz.ch/mailman/listinfo/r-devel
>>
>>
>>
>>
>
>
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R-devel@stat.math.ethz.ch mailing list
https://www.stat.math.ethz.ch/mailman/listinfo/r-devel Received on Wed Jul 28 06:12:10 2004

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