Re: [R] a class matrix with class ordered data

From: Spencer Graves <spencer.graves_at_pdf.com>
Date: Thu 28 Jul 2005 - 14:24:16 EST

          If you still are interested in help with your problem, PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html. It can increase the likelihood of you getting a useful reply.

          See other comments in line.

          spencer graves

Werner Bier wrote:
> Deart R-help,
>
> I could not transfer ordered data into a matrix, does anybody knows if there is something wrong in the code below please?
>
> Thanks in advance, Tom
>
> Y <- ordered( unlist( Q[,1:2] ) )

          This creates Y as an ordered factor.
>
> z <- matrix(0, nrow(Q), 2)
>
> z <- Y
>

          This completely discards the matrix z and replaces it with Y. Nothing of the matrix remains (except in your memory).

> is.ordered(z)
>
> [1] T
>
> is.matrix(z)
>
> [1] F
>
> i.e. Is it possibile somehow to have is.matrix(z) equal TRUE?
>

          Rather than asking only for an explanation of some little thing that didn't solve your problem, may I suggest you tell us more about the problem you are actually trying to solve. Why are you doing this? What specifically do you want to accomplish -- but expressed in terms of a very simple example with a few lines of code that a reader can copy into R on their computer and get something, then try a couple of modifications that might be closer to what you want.
>
>
>
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-- 
Spencer Graves, PhD
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Received on Thu Jul 28 14:31:45 2005

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