How to find out the categorical variables in R -
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i have dataset, named diamonds. has ten variables: carat, cut, color, clarity... so, how can write code find out variables categorical variables. using class() function find out type of each variable, how can let program print automatically?
classvariables = sapply(diamonds, function(x) class(x))
> str(diamonds) classes ‘tbl_df’, ‘tbl’ , 'data.frame': 53940 obs. of 10 variables: $ carat : num 0.23 0.21 0.23 0.29 0.31 0.24 0.24 0.26 0.22 0.23 ... $ cut : ord.factor w/ 5 levels "fair"<"good"<..: 5 4 2 4 2 3 3 3 1 3 ... $ color : ord.factor w/ 7 levels "d"<"e"<"f"<"g"<..: 2 2 2 6 7 7 6 5 2 5 ... $ clarity: ord.factor w/ 8 levels "i1"<"si2"<"si1"<..: 2 3 5 4 2 6 7 3 4 5 ... $ depth : num 61.5 59.8 56.9 62.4 63.3 62.8 62.3 61.9 65.1 59.4 ... $ table : num 55 61 65 58 58 57 57 55 61 61 ... $ price : int 326 326 327 334 335 336 336 337 337 338 ... $ x : num 3.95 3.89 4.05 4.2 4.34 3.94 3.95 4.07 3.87 4 ... $ y : num 3.98 3.84 4.07 4.23 4.35 3.96 3.98 4.11 3.78 4.05 ... $ z : num 2.43 2.31 2.31 2.63 2.75 2.48 2.47 2.53 2.49 2.39 ... > ?str
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