data frame renaming

tidyverse
2

For your first question, this should do what you want:

df_list <- set_names(x = df_list,
                     nm = ~ paste0("df_", seq_along(along.with = .x)))

For the 2nd question, you can do something like this:

col_names <- c("m", "n", "o")
df_list <- map(.x = df_list,
    .f = ~ set_names(x = .x,
                     nm = col_names))

Hope this helps.

Edit: Replying to post #3 by @nithinmkp

The following example changes names for 2nd and 4th columns.

col_indices <- c(2, 4)
col_names <- c("B", "D")

map(.x = df_list,
    .f = function(df)
    {
        existing_names <- names(x = df)
        existing_names[col_indices] <- col_names
        set_names(x = df,
                  nm = existing_names)
    })

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