[R] Dimension of a vector

maj at stats.waikato.ac.nz maj at stats.waikato.ac.nz
Wed Dec 5 01:35:32 CET 2007


Consider the following:
> A <- 1:10
> A
 [1]  1  2  3  4  5  6  7  8  9 10
> dim(A)
NULL
> dim(A) <- c(2,5)
> A
     [,1] [,2] [,3] [,4] [,5]
[1,]    1    3    5    7    9
[2,]    2    4    6    8   10
> dim(A)
[1] 2 5
> dim(A) <- 10
> A
 [1]  1  2  3  4  5  6  7  8  9 10
> dim(A)
[1] 10

Would it not make sense to have dim(A) = length(A) for all vectors?

Murray
-- 
Dr Murray Jorgensen      http://www.stats.waikato.ac.nz/Staff/maj.html
Department of Statistics, University of Waikato, Hamilton, New Zealand
Email: maj at waikato.ac.nz                                Fax 7 838 4155
Phone  +64 7 838 4773 wk    Home +64 7 825 0441    Mobile 021 1395 862



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