Search for data frames by names in R

Question

Good morning, I would like to create a function that I can use a data frame with a name that is saved in an object. Example: I have the dataframes: df1, df2, df3 All with columns: x, y and z

df1
x y z
1 3 4
2 2 5
3 1 6

df2
x y z
1 3 4
2 2 5
3 1 6

df3
x y z
1 3 4
2 2 5
3 1 6

And in that I would have objects n1, N2 and N3 that would have only the names of objects df1, df2 and df3

n1="df1"
n2="df2"
n3="df3"

And what I would need is to take the n objects with the names of the dataframes and make them receive the dataframes with their names or use the n’s as the dataframes themselves.

Would that be possible? Thank you.

Answer 1

dfs <- paste0("df", sprintf("%02d", 1:10))

## Você pode atribuir valores de objetos diretamente às strings
## de nomes que quiser com a função assign()
for(i in dfs){
  my_dfi <- mtcars[sample(1:nrow(mtcars), size = 5),]
  assign(i, my_dfi)
}

## Você pode acessar os objetos chamando pelas strings de nomes
## com a função get() a alguma forma de loop
lista_dfs <- c()
for(i in dfs){
  lista_dfs[[i]] <- get(i)
}

Answer 2

in which case you can include these data frames in a list and name it with the name you want, each index in the list will be a data frame.

df1 <- data.frame(x = c(1:3), y = c(3:1), z = c(4:6))
df2 <- data.frame(x = c(1:3), y = c(3:1), z = c(4:6))
df3 <- data.frame(x = c(1:3), y = c(3:1), z = c(4:6))

listaDataFrame <- list(df1,df2, df3)
names(listaDataFrame) = c('df1', 'df2', 'df3')
listaDataFrame['df1']

$df1
  x y z
1 1 3 4
2 2 2 5
3 3 1 6