Nonfunctional Function

[msputman]

I am running this code from readr to import data and it functions perfectly"

df <- read_csv("Dataset.csv", col_names = TRUE, col_types = cols_only(VAR1, VAR2, VAR3)

I want to make it into a function so I can run it on multiple inputs, so I wrote this code:

extract_function <- function(x) {
df <- read_csv(x, col_names = TRUE, col_types = cols_only(VAR1, VAR2, VAR3)}

The function is created but when I execute the function it chunks through everything (looks like its working) but never creates the new data frame. Heres how I have been executing the function:

extract_function ("Dataset.csv")

1. Why isn't it creating my new data frame once I put it into the function?
2. How can I name the new data frame based on the input from csv? (would like the new dataframe to have the same name as the csv it extracted from)

[FJCC]

The function is not written to return anything. It does make the object df but the disappears once the function is done running. Try

extract_function <- function(x) {
  read_csv(x, col_names = TRUE, col_types = cols_only(VAR1, VAR2, VAR3)
}

[lxy009]

for the first question, you need to add the line return(df) or just df.
when you df <- extract_function("Dataset.csv") , the df will contain your data.frame.

for the second question, instead of return, you would need to assign(x,df) .
In general x is the name you want to give to df.
By default this will create x in the global environment.
Look at the documentation to modify this.