r - Flatting a dataframe with all values of a column into one

Question

I have a data frame in this format

str(df2)
'data.frame':   2 obs. of  10 variables:
 $ stc1 : Factor w/ 2 levels "price_of_A_stock",..: 1 2
 $ stc2 : Factor w/ 2 levels "price_of_B_stock",..: 1 2
 $ stc3 : Factor w/ 2 levels "price_of_C_stock",..: 1 2

I would like to make it to have all values from every column into one without the names of its column

In order to make it I used this:

r_df <- as.data.frame(t(df2))

But the result I have is this:

str(r_df)
'data.frame':   10 obs. of  2 variables:
 $ 1: Factor w/ 10 levels "price_of_A_stock",..: 3 6 8 1 5 9 10 7 4 2
  ..- attr(*, "names")= chr  "stc1" "stc2" "stc3" "stc4" ...
 $ 2: Factor w/ 10 levels "price_of_B_stock",..: 7 9 10 6 1 8 4 3 2 5
  ..- attr(*, "names")= chr  "stc1" "stc2" "stc3" "stc4" ...

Answer 1

We can use unlist

data.frame(Col1= unlist(df2, use.names=FALSE))