factor() in r code example

Example 1: what is factor in r programming

# Create a vector as input.
data <- c("East","West","East","North","North","East","West","West","West","East","North")

print(data)
print(is.factor(data))

# Apply the factor function.
factor_data <- factor(data)

print(factor_data)
print(is.factor(factor_data))

Example 2: factor in r

# This returns a character vector, the as.numeric() function
# is still required to convert the values to the proper type (numeric).
f <- levels(f)[f]
f <- as.numeric(f)