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  • Why use as. factor () instead of just factor () - Stack Overflow
    Performance: as factor > factor when input is integer A factor variable is the next of kin of an integer variable This means that converting an integer to a factor is easier than converting a numeric character to a factor as factor just takes care of this
  • Convert data. frame column format from character to factor
    The complete conversion of every character variable to factor usually happens when reading in data, e g , with stringsAsFactors = TRUE, but this is useful when say, you've read data in with read_excel() from the readxl package and want to train a random forest model that doesn't accept character variables
  • What are the differences between a factor and a vector in R?
    A factor is a very specific type of vector that is an odd mix of numeric and character, which at first glance seems like a character, but under the hood is actually numeric The character aspect are the labels that are attached to each value Thus, it is a categorical variable with a limited number of categories
  • Pandas - make a column dtype object or Factor - Stack Overflow
    In pandas, how can I convert a column of a DataFrame into dtype object? Or better yet, into a factor? (For those who speak R, in Python, how do I as factor()?) Also, what's the difference between
  • Convert existing dataframe variable to factor in Tidyverse
    When you have an existing character variable in a dataframe, is there an easy method for converting that variable to a factor using the tidyverse format? For example, the 2nd line of code below won't reorder the factor levels, but the last line will
  • r - Re-ordering factor levels in data frame - Stack Overflow
    Re-ordering factor levels in data frame [duplicate] Asked 12 years, 10 months ago Modified 4 years, 9 months ago Viewed 262k times
  • r - Convert factor to integer - Stack Overflow
    Does anyone know of a way to coerce a factor into an integer? Using as character() will convert it to the correct character, but then I cannot immediately perform an operation on it, and as integer() or as numeric() will convert it to the number that system is storing that factor as, which is not helpful
  • r - How to convert a factor to integer\numeric without loss of . . .
    The levels of a factor are stored as character data type anyway (attributes(f)), so I don't think there is anything wrong with as numeric(paste(f)) Perhaps it would be better to think why (in the specific context) you are getting a factor in the first place, and try to stop that E g , is the dec argument in read table set correctly?
  • When or why convert a numeric variable to factor? - Stack Overflow
    I generally only convert a variable to a factor if one or more of the following are true: the values of the variable represent some form of grouping, i e the variable is categorical in nature there are substantial memory savings to be had - this is usually the case where character variables have been used to identify group levels the variable is numeric in nature, but is highly non-linear
  • What is the significance of load factor in HashMap?
    A load factor=1 hashmap with number of entries=capacity will statistically have significant amount of collisions (=when multiple keys are producing the same hash) When collision occurs the lookup time increases, as in one bucket there will be >1 matching entries, for which the key must be individually checked for equality





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