How do I transform a 1 column data frame into a vector while the column name stays the vector name i-CodePudding

I have a dataframe with one column and some rows which I want to transform into a vector. The name of the column should be the name of the vector as well. Usually, I create another object doing this:

new_object <- as.vector(df$variable_name)
new_object

Is there a way to keep the variable name as the name of the vector?

(I am asking as I try to build this in a function and need it therefore)

Thank you!

CodePudding user response：

You can use list2env -

df <- data.frame(a = 1:5)
list2env(df, .GlobalEnv)
a
#[1] 1 2 3 4 5

CodePudding user response：

sub <-c("A","A","A","A","B","B","B","B","C","C","C","C")
n<-c(0,1,1,1,0,1,0,1,0,1,0,1)

df <- data.frame(sub, n)

n <- df$n

[1] 0 1 1 1 0 1 0 1 0 1 0 1

You should be able to just simply call the variable name to get the vector.

CodePudding user response：

df <- data.frame(x = c(1, 2, 3))

assign(names(df), df[,1])

x
# [1] 1 2 3

CodePudding user response：

We could use attach

attach(df)

-output

> a
[1] 1 2 3 4 5

data

df <- data.frame(a = 1:5)