[R] hi... problems about adjacency matrix

[(Ted Harding)]

On 08-Jul-10 10:33:56, Gina Liao wrote:
> Dear all,
> Hi, I have the problems about converting the matrix to adjacency
> matrix.Here's my example,
>           a            b               c                d              
> e               fa 1.0000000 0.4048823682 0.1228531 0.49046991
> 0.4945158868 0.307443317b 0.4048824 1.0000000000 0.4367475 0.96949219
> 0.0007378596 0.560747765c 0.1228531 0.4367474719 1.0000000 0.40037341
> 0.3157538204 0.428183667d 0.4904699 0.9694921891 0.4003734 1.00000000
> 0.0661313658 0.575606129e 0.4945159 0.0007378596 0.3157538 0.06613137
> 1.0000000000 0.001076251f 0.3074433 0.5607477645 0.4281837 0.57560613
> 0.0010762514 1.000000000
> and my threshold value is 0.4763, which means any value above it is "1"
> and any values below it is "0".
> so my adjacency matrix should be like this,
>      a   b   c   d   e   fa   1   0   0   1   1   0b   0   1   0   1  
> 0   1c   0   0   1   0   0   0d   1   1   0   1   0   1e   1   0   0  
> 0   1   0f    0   1   0   1   0   1
> 
> I'd like to ask how to convert the matrix to adjacency matrix.
> Thanks!!!
> 
> Gina

If B is your original matrix of numbers, and A is to be the adjacency
matrix which you want, then:

  B <- 1*(A > 0.4763)

Ted.

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Date: 08-Jul-10                                       Time: 13:41:00
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