Store vectors as data frame entries?
r
Solution
You cannot have a 3D data frame. You can achieve this many ways but the easiest one to explain conceptually would probably be to have a list within a list:
> entries <- list(V1=list(c(1,2), c(1,1)), V2=list(c(2,3), c(0,0)), V3=list(c(0,0),c(2,2)))
> entries
$V1
$V1[[1]]
[1] 1 2
$V1[[2]]
[1] 1 1
$V2
$V2[[1]]
[1] 2 3
$V2[[2]]
[1] 0 0
$V3
$V3[[1]]
[1] 0 0
$V3[[2]]
[1] 2 2
Now lets say you want to change the second entry of V1 you would simply do
entries$V1[[2]] <- c(2,2)
or
entries[[1]][[2]] <- c(2,2)
Problem
I'm pretty new to R, and was wondering if there is a way to store vectors in a data frame such that each entry of the data frame is a vector. I want to assign the entry to a vector, and be able to change it later: ``` df[2,]$Value <- c(1,2,0) df[3,]$Value <- c(0,0,1) df[3,]$Value <- df[3,]$Value + c(2,4,4) ``` But can only make this work as replacing 3 different entries in the data frame. Does anyone know if this is possible? ``` df: V1 V2 V3 1 c(1,2) c(2,3) c(0,0) 2 c(1,1) c(0,0) c(2,2) ```