[R] question about matrix

Douglas Bates bates at stat.wisc.edu
Mon Feb 16 21:20:08 CET 2004


Cynthia He <dingdong1205 at yahoo.com> writes:

>      How to write this matrix in R?  The "^" sign is a power symbol.
>  
>      Thanks a lot!
>  
>  
>  0^1   0^2  .........  0^n 
>  1^1   1^2  .........  1^n
>  2^1   2^2  .........  2^n
> ................................
> ................................
>  q^1   q^2  .........  q^n

Use the outer product function, as in

> outer(0:5, 1:4, "^")
     [,1] [,2] [,3] [,4]
[1,]    0    0    0    0
[2,]    1    1    1    1
[3,]    2    4    8   16
[4,]    3    9   27   81
[5,]    4   16   64  256
[6,]    5   25  125  625




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