[R] how to get the rows that satisfy a specific condition

[Fix Ace]

Hello, there,
I wonder if there is an easier way that I would only get the rows that satisfies some condition. For example:I have the following matrix, and I would like to output only the 3rd row and 4th row, since only these two rows contain the numbers greater than 11
> a
     [,1] [,2] [,3] [,4] [,5]
[1,]    1    5    9   13   17
[2,]    2    6   10   14   18
[3,]    3    7   11   15   19
[4,]    4    8   12   16   20
> a>11
      [,1]  [,2]  [,3] [,4] [,5]
[1,] FALSE FALSE FALSE TRUE TRUE
[2,] FALSE FALSE FALSE TRUE TRUE
[3,] FALSE FALSE FALSE TRUE TRUE
[4,] FALSE FALSE  TRUE TRUE TRUE
I have tried to use a[a>11, ] and it did not work.
Thanks a lot for the help:)


	[[alternative HTML version deleted]]