How to create a data frame with combinations of values in R?
Suppose we have two values 0 and 1 then how many combinations of these values are possible, the answer is 8 and these combinations are (0,0), (1,0), (0,1), (1,1). In R, we can use expand.grid function to create these combinations but to save it in a data frame, we would need to use as.data.frame function.
Example
Live Demo
df1<-as.data.frame(expand.grid(c(0,1),c(0,1)))
df1
Output
Var1 Var2
1 0 0
2 1 0
3 0 1
4 1 1
Example
Live Demo
df2<-as.data.frame(expand.grid(c(0,1),c(0,1),c(0,1)))
df2
Output
Var1 Var2 Var3
1 0 0 0
2 1 0 0
3 0 1 0
4 1 1 0
5 0 0 1
6 1 0 1
7 0 1 1
8 1 1 1
Example
Live Demo
df3<-as.data.frame(expand.grid(c(0,1,2),c(0,1,2),c(0,1,2)))
df3
Output
Var1 Var2 Var3
1 0 0 0
2 1 0 0
3 2 0 0
4 0 1 0
5 1 1 0
6 2 1 0
7 0 2 0
8 1 2 0
9 2 2 0
10 0 0 1
11 1 0 1
12 2 0 1
13 0 1 1
14 1 1 1
15 2 1 1
16 0 2 1
17 1 2 1
18 2 2 1
19 0 0 2
20 1 0 2
21 2 0 2
22 0 1 2
23 1 1 2
24 2 1 2
25 0 2 2
26 1 2 2
27 2 2 2
Example
Live Demo
df4<-as.data.frame(expand.grid(c(0,1,2),c(0,1,2)))
df4
Output
Var1 Var2
1 0 0
2 1 0
3 2 0
4 0 1
5 1 1
6 2 1
7 0 2
8 1 2
9 2 2
Example
Live Demo
df5<-as.data.frame(expand.grid(c(1,2),c(1,2),c(1,2)))
df5
Output
Var1 Var2 Var3
1 1 1 1
2 2 1 1
3 1 2 1
4 2 2 1
5 1 1 2
6 2 1 2
7 1 2 2
8 2 2 2
Published on 07-Oct-2020 16:33:59
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