On Dec 26, 2010, at 8:22 PM, John Sorkin wrote:
I am trying to drop a column of a data frame. The code below
attempts to drop a numeric column (which does not work but gives no
error or warning) and a factor column (which does not work but gives
an error).
I would appreciate someone tellin
John -
You can use a syntax similar to what you've tried with
the select= argument of the subset function:
subset(dfxyz,select=-y)
x z
1 1 0
2 2 0
. . .
subset(dfxyz,select=-z)
x y
1 1 11
2 2 12
. . .
- Phil Spector
assign NULL to the column:
> dfxyz <- data.frame(x=1:10,y=11:20,z=factor(c(rep(0,5),rep(1,5
> dfxyz
x y z
1 1 11 0
2 2 12 0
3 3 13 0
4 4 14 0
5 5 15 0
6 6 16 1
7 7 17 1
8 8 18 1
9 9 19 1
10 10 20 1
> dfxyz$y <- NULL
> dfxyz
x z
1 1 0
2 2 0
3 3 0
4 4 0
5 5 0
I am trying to drop a column of a data frame. The code below attempts to drop a
numeric column (which does not work but gives no error or warning) and a factor
column (which does not work but gives an error).
I would appreciate someone telling me why my code does not work, and suggesting
code th
4 matches
Mail list logo
