Getting function variables from data frame in R

[PizzaRoma]

df <- data.frame(os = c("android", "android", "ios", "ios", "windows", "windows"),

platform = c("fb","fb", "google", "tiktok", "tiktok", "tiktok"),

country = c("de", "at", "ch", "gb", "fi", "es"))

output<- function (a, b, c){ # a = os, b = platform, c = country

colSums(tables[[b]][[c]][[a]][[month.abb[month(date)]]][, 2:12])

}

output("android", "fb", "de") #works]

how to loop the function rows of df??

apologies for not having a reproducible example.

[arthur.t]

I'm not 100% sure what you're trying to do, but I think the function pmap from the purrr package is probably what you're looking for.

If you had a fn <- function(os, platform, country) {...} you could pmap(df, fn) and it will evaluate the fn on each "row".

[PizzaRoma]

Thank you!! It did the the trick. I guess its time to learn more about "purrr" library. Although I have to mention that id did not work before I changed the column names to the same as in the function. Maybe this is what was needed with other libraries as well...

[arthur.t]

You're welcome! purrr is an amazing package in my opinion, I highly recommend learning it. The map family of functions is the meat of it.

Once you become proficient, you may find that you never need to write a loop every again...