Type checking and conversion in R Programming - Mini Project: Build & Apply

Type Checking and Conversion in R

📖 Scenario: You are working with a small dataset that contains different types of information. You need to check the types of these data and convert them to the correct types for further analysis.

🎯 Goal: Learn how to check the type of variables and convert them to other types in R.

📋 What You'll Learn

Create variables with specific values and types

Check the type of each variable using class()

Convert variables to different types using as.character(), as.numeric(), and as.logical()

Print the results to see the changes

💡 Why This Matters

🌍 Real World

Data scientists and analysts often receive data in mixed types and need to check and convert types before analysis.

💼 Career

Understanding type checking and conversion is essential for data cleaning, preprocessing, and ensuring correct data manipulation in R programming jobs.

1

Create variables with different types

Create three variables in R: num_var with the numeric value 42, char_var with the character string "100", and log_var with the logical value TRUE.

R Programming

# Create variables num_var, char_var, and log_var with the specified values
# Your code here

Need a hint?

Use the assignment operator <- to create variables.

2

Check the types of the variables

Use the class() function to check the type of each variable: num_var, char_var, and log_var. Assign the results to variables type_num, type_char, and type_log respectively.

R Programming

num_var <- 42
char_var <- "100"
log_var <- TRUE
# Use class() to check types and assign to type_num, type_char, and type_log
# Your code here

Need a hint?

Use class(variable) to get the type of a variable.

3

Convert variables to different types

Convert num_var to a character and assign it to num_to_char. Convert char_var to numeric and assign it to char_to_num. Convert log_var to numeric and assign it to log_to_num.

R Programming

num_var <- 42
char_var <- "100"
log_var <- TRUE
type_num <- class(num_var)
type_char <- class(char_var)
type_log <- class(log_var)
# Convert types as instructed and assign to new variables
# Your code here

Need a hint?

Use as.character(), as.numeric() to convert types.

4

Print the types and converted values

Print the variables type_num, type_char, type_log, and the converted variables num_to_char, char_to_num, log_to_num using print().

R Programming

num_var <- 42
char_var <- "100"
log_var <- TRUE
type_num <- class(num_var)
type_char <- class(char_var)
type_log <- class(log_var)
num_to_char <- as.character(num_var)
char_to_num <- as.numeric(char_var)
log_to_num <- as.numeric(log_var)
# Print all type and converted value variables
# Your code here

Need a hint?

Use print(variable) to show the values.