Warning in R – Ops.factor: not meaningful (2 Examples)

In this R programming tutorial you’ll learn how to deal with the warning message “In Ops.factor : not meaningful for factors”.

Exemplifying Data

my_data <- factor(5)                                  # Exemplifying data object
my_data                                               # Print data object to RStudio console
# [1] 5
# Levels: 5

Example 1: Replicating the Warning – In Ops.factor : not meaningful for factors

my_data * 3                                           # Using data leads to warning
# [1] NA
# Warning message:
# In Ops.factor(my_data, 3) : '*' not meaningful for factors

Example 2: Solving the Warning – In Ops.factor : not meaningful for factors

my_data_updated <- as.numeric(as.character(my_data))  # Converting data type
my_data_updated                                       # Print new data object
# [1] 5
my_data_updated * 3                                   # Properly use data object
# [1] 15

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