Hi,
How do I ensure that I always get a matrix back when I extract rows?
The mickey-mouse example doesn't matter much, but if instead of 1:2 or
1, I have a vector which may have 1 or more values, then I'm in trouble.
Any way to make this consistently return a matrix?
Thx in advance.
- Ken
#
------------------------------------------------------------------------
-------------------------
> x <- matrix( 1:10, nrow = 5 )
> x
[,1] [,2]
[1,] 1 6
[2,] 2 7
[3,] 3 8
[4,] 4 9
[5,] 5 10
> class( x[1:2,] )
[1] "matrix" # this is good
> class( x[1,] )
[1] "integer" # this is EVIL
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