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  3. Introduction to R for Finance

Exercise

Factor levels

Accessing the unique levels of your factor is simple enough by using the levels() function. You can also use this to rename your factor levels!

credit_factor

[1] AAA AA  A   BBB AA  BBB A  
Levels: A AA AAA BBB

levels(credit_factor)

[1] "A"   "AA"  "AAA" "BBB"

levels(credit_factor) <- c("1A", "2A", "3A", "3B")

credit_factor

[1] 3A 2A 1A 3B 2A 3B 1A
Levels: 1A 2A 3A 3B

The credit_factor variable you created in the last exercise is available in your workspace.

Instructions

100 XP
  • Use levels() on credit_factor to identify the unique levels.
  • Using the same "1A", "2A" notation as in the example, rename the levels of credit_factor. Pay close attention to the level order!
  • Print the renamed credit_factor.