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Course Content


Factors are kept in R as a vector of integer values with a corresponding set of character values to use when displaying the factor. To make a factor, use the factor function. The only argument needed for factoring is a vector of values, which will be returned as a vector of factor values.

In R, the command factor() with a vector as input is used to build or alter a factor. The following are the two steps in creating a factor: The process of creating a vector. Using function factor to convert the produced vector into a factor ()

Factor variables are also useful in a variety of graphic kinds. Additionally, keeping string variables as factor variables makes better use of memory. The factor function is used to produce a factor variable. A vector of values, which might be text or numeric, is the only needed argument.

The levels() function gives you access to a variable's levels attribute. The first form sets the attribute, whereas the second returns the value of the levels of its argument.

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