Hi,
I want to create a dataframe where one of the columns does not hold
individual elements, but a vector instead.
For example, imagine the following dataframe without any vectors as elements
. . .
ex
X1 X2
1 5 15
2 7 12
3 9 14
If I have a pre-existing dataframe, then setting an element in the dataframe
to a vector is easy. That is,
ex[1,2]<-c(45,98,78)
ex1
X1 X2
1 5 45,98,78
2 7 12
3 9 14
I could also set each element in a column to a vector. That is,
ex$X2<-list(c(45,98,78))
ex2
X1 X2
1 5 45,98,78
2 7 45,98,78
3 9 45,98,78
However, if my dataframe does not already exist, then I cannot create a
dataframe with vectors using the following syntax:
data.frame(x1=list(c(5,6,7),c(8,9,10)))
What I want:
ex3
X1
1 5,6,7
2 8,9,10
What I get:
x1.c.5..6..7. x1.c.8..9..10.
1 5 8
2 6 9
3 7 10
R seems to pull out each element in each list component and treat them as
separate elements in the dataframe.
Is there syntax to get R to treat a component of a list as valid entry into
a single element in a dataframe without the dataframe already existing?
Thanks,
Steve Lacey
I can simply set any element or column to the
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