readRDS and saveRDS in R Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to save the object data to a file.

R Programming

saveRDS(data, [1])

Drag options to blanks, or click blank then click option'

A"datafile.txt"

B"datafile.rds"

Cdatafile.rds

Ddatafile

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting to put the file name in quotes.

Using a wrong file extension like .txt.

The saveRDS function requires the file name as a string, so it must be in quotes.

2fill in blank

medium

Complete the code to read the saved RDS file into the variable loaded_data.

R Programming

loaded_data <- [1]("datafile.rds")

Drag options to blanks, or click blank then click option'

AreadRDS

Bread.csv

Cload

Dscan

Attempts:

3 left

💡 Hint

Common Mistakes

Using load which is for .RData files, not .rds.

Using read.csv which is for CSV files.

The readRDS function reads an RDS file and returns the saved object.

3fill in blank

hard

Fix the error in the code to correctly save the variable my_list to a file.

R Programming

saveRDS([1], "mylist.rds")

Drag options to blanks, or click blank then click option'

Amylist

B"my_list"

Cmy_list

Dlist

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong variable name without underscore.

Putting the variable name in quotes.

The variable name is my_list, so it must be used exactly without quotes.

4fill in blank

hard

Fill both blanks to save df to a file and then read it back into df_copy.

R Programming

saveRDS([1], [2])
df_copy <- readRDS("dataframe.rds")

Drag options to blanks, or click blank then click option'

Adf

B"dataframe.rds"

Cdf_copy

D"df.rds"

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the object and file name.

Not using quotes around the file name.

You save the object df to the file named "dataframe.rds" before reading it back.

5fill in blank

hard

Fill all three blanks to save results to a file, read it back into loaded_results, and check if they are identical.

R Programming

saveRDS([1], [2])
loaded_results <- [3]("results.rds")
identical(results, loaded_results)

Drag options to blanks, or click blank then click option'

Aresults

B"results.rds"

CreadRDS

Dload

Attempts:

3 left

💡 Hint

Common Mistakes

Using load instead of readRDS.

Not using quotes around the file name.

You save results to "results.rds", then read it back with readRDS to compare.