What makes you think that with 12 elements the dimensions should be 3x4? It
seems that 4x3 would be equally valid.
In every use of matrices that I have encountered, the dimensions have been
relatable to some known quantity from the problem context, and matrix
dimensioning has been an exercise i
Can you explain why n=12 should result in 3x4 instead of 2x6 or 6x2 or
4x3 or 1x12 ?
On Thu, Jun 14, 2012 at 8:51 AM, karthicklakshman
wrote:
> Dear R experts,
>
> I am interested in getting the dimensions for the matrix dynamically, based
> on the the number of elements in a matrix for example.
Message-
> From: r-help-boun...@r-project.org [mailto:r-help-bounces@r-
> project.org] On Behalf Of karthicklakshman
> Sent: Thursday, June 14, 2012 7:51 AM
> To: r-help@r-project.org
> Subject: [R] R matrix help
>
> Dear R experts,
>
> I am interested in get
If you have your data in x, you can try something like
matrix(x,length(x)/4,4)
hth
kd
2012.06.14. 14:51 keltezéssel, karthicklakshman írta:
Dear R experts,
I am interested in getting the dimensions for the matrix dynamically, based
on the the number of elements in a matrix for example. if th
PDT)
> To: r-help@r-project.org
> Subject: [R] R matrix help
>
> Dear R experts,
>
> I am interested in getting the dimensions for the matrix dynamically,
> based
> on the the number of elements in a matrix for example. if the number is
> 12,
> I should get dim= 3X4,
But the meaning of a 3x4 table is rather different than the meaning of
a 1x12 table.
Regardless, you probably want to start with integer factorization, and
can read more
about implementations in R here (and elsewhere):
http://tolstoy.newcastle.edu.au/R/help/05/01/10007.html
Sarah
On Thu, Jun 14,
But there are multiple shapes for matrices with 12 elements -- how did
you get 3x4 ? You also could have had 1x12, 2x6, 3x4, 4x3, 6x2,12x1
If you have an R object, you can use dim() on it. [Or perhaps slightly
more robustly, NCOL() and NROW()]
Michael
On Thu, Jun 14, 2012 at 7:51 AM, karthicklak
Dear R experts,
I am interested in getting the dimensions for the matrix dynamically, based
on the the number of elements in a matrix for example. if the number is 12,
I should get dim= 3X4, if it is 20, dim=5X4.
please help me do this.
Thank you
Regards
karthick
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