I have a matrix y:

> dimnames(y)
$x93
[1] "1" "2"

$x94
[1] "0" "1" "2"
.................. so on  (there are other dimensions as well)



I need to access a particular dimension, but a random mechanism tells me
which dimension it would. So, sometimes I might need to access
dimnames(y)$x93, some other time it would be dimnames(y)$x94.. and so on.
Now let that random dimension be idx, then dimnames(y)$paste('x',idx,sep='')
doesn't work.

Can anyone help?

Thanks!

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