[R] Matrix Help

[David Winsemius]

On Feb 20, 2011, at 5:56 PM, Dmitry Berman wrote:

> On Sun, Feb 20, 2011 at 5:55 PM, Dmitry Berman <ravenblur at gmail.com>  
> wrote:
>
>> Listers,
>>
>> I have a simple matrix:
>>
>> ----------------------------------
>> m <-c(1:7)
>> m <- cbind(m)
>>
>> m
>> [1,] 1
>> [2,] 2
>> [3,] 3
>> [4,] 4
>> [5,] 5
>> [6,] 6
>> [7,] 7
>> -----------------------------------
>>
>> I want to add a second column using:
>>
>>
>>
> m[,2] <- cbind(m,8:14)

Don't reference the column number on the LHS:

m <- 1:7
m <- cbind(m, 8:14)

 > m
      m
[1,] 1  8
[2,] 2  9
[3,] 3 10
[4,] 4 11
[5,] 5 12
[6,] 6 13
[7,] 7 14
> But I get the error:
> Error in m[, 2] <- cbind(m, 8:14) : subscript out of bounds
>
> What am I doing wrong?
>
> Thanks
>
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>
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David Winsemius, MD
West Hartford, CT