1. Introduction
This R program finds the levels of a factor of a given vector. Factor levels are the unique values in a vector that has been converted into a factor, which is useful in statistical modeling.
2. Program Steps
1. Create a vector.
2. Convert the vector into a factor.
3. Find and print the levels of the factor.
3. Code Program
# Step 1: Create a vector
vector <- c("high", "medium", "low", "high", "medium")
# Step 2: Convert the vector into a factor
factor_vector <- factor(vector)
# Step 3: Find the levels of the factor
levels_of_factor <- levels(factor_vector)
# Print the levels
print("Levels of the factor:")
print(levels_of_factor)
Output:
Levels of the factor: [1] "high" "low" "medium"
Explanation:
1. c("high", "medium", "low", "high", "medium"): Creates a vector with some repeated values.
2. factor(vector): Converts the vector into a factor. Factors are used to represent categorical data and can handle both string and integer data.
3. levels(factor_vector): Retrieves the unique levels from the factor.
4. print("Levels of the factor:"): Prints a message indicating the levels of the factor.
5. print(levels_of_factor): Displays the unique levels of the factor.
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