split data set

I have a data(ABC) like this:

      x   y
A   3   4
A   1   3
B   2   6
B   4   8
C   5   4
C   6   7

I want to split this data into

A:
   x   y
A   3   4
A   1   3

B
B   2   6
B   4   8

C
C   5   4
C   6   7

anyone knows how to do that?

?split

df <- data.frame(L = rep(c("A","B","C"), each =2), x = runif(6),

y=runif(6))

df

L          x          y
1 A 0.57411628 0.01975706
2 A 0.21079282 0.62153084
3 B 0.46798592 0.97374423
4 B 0.08731642 0.33845989
5 C 0.08801709 0.93843814
6 C 0.54576658 0.26798882

split(df, df$L)

$A
  L         x          y
1 A 0.5741163 0.01975706
2 A 0.2107928 0.62153084

$B
  L          x         y
3 B 0.46798592 0.9737442
4 B 0.08731642 0.3384599

$C
  L          x         y
5 C 0.08801709 0.9384381
6 C 0.54576658 0.2679888

thanks,

Aimin Yan

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