'Can I use the output of a function in another R file?

I built a function that retrieves data from an Azure table via a REST API. I sourced the function, so I can reuse it in other R scripts.

The function is as below:

Connect_To_Azure_Table(Account, Container, Key)

and it returns as an output a table called Azure-table. The very last line of the code in the function is

head(Azure_table) 

In my next script, I'm going to call that function and execute some data transformation.

However, while the function executes (and my Azure_table is previewed), I don't seem to be able to use it in the code to start performing my data transformation. For example, this is the beginning of my ETL function:

library(dplyr)
library(vroom)
library(tidyverse)
library(stringr)

#Connects to datasource

if(exists("Connect_To_Azure_Table", mode = "function")) {
source("ConnectToAzureTable.R")
}

Account <- "storageaccount"
Container <- "Usage"
Key <- "key"

Connect_To_Azure_Table(Account, Container, Key)

# Performs ETL process

colnames(Azure_table) <- gsub("value.", "", colnames(Azure_table))                # Removes prefix from column headers

warning

Both the function and the table get warning. But while the function executes anyway, the Azure_table throws an error:

> # Performs ETL process
> 
> colnames(Azure_table) <- gsub("value.", "", colnames(Azure_table))                # Removes prefix from column headers
Error in is.data.frame(x) : object 'Azure_table' not found

What should I be doing to use Azure_table in my script?

Thanks in advance!

~Alienvolm



Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source