On Sep 1, 2011, at 21:11 , R. Michael Weylandt wrote:
Dropping all occurences of a factor does not drop that level. This actually
turns out to be much more useful than it first might appear, but if you
really need to get around it, it can be done.
...most expediently by using factor(), as
Hello everyone,
I have the following factor:
levels(pp_income)
[1]1 2 3 4 5 6 7
[9] 8 9 Renter
I want to subset so that only values 1:9 are included. I have the following:
income-pp_income[pp_income %in% c(1:9)]
levels(income)
[1]1
Dropping all occurences of a factor does not drop that level. This actually
turns out to be much more useful than it first might appear, but if you
really need to get around it, it can be done.
Look at this toy example:
R x = factor(c(A,B,C,A,B,C,C))
R x
[1] A B C A B C C
Levels: A B C
R x[x !=
On Sep 1, 2011, at 2:59 PM, Dan Abner wrote:
Hello everyone,
I have the following factor:
levels(pp_income)
[1]1 2 3 4 5 6 7
[9] 8 9 Renter
I want to subset so that only values 1:9 are included. I have the
following:
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