求重復數字的個數使用tabulate


TABLE = tabulate(x)


TABLE = tabulate(x) creates a frequency table of data in vector x. Information in TABLE is arranged as follows:
1st column — The unique values of x
2nd column — The number of instances of each value
3rd column — The percentage of each value


If x is a numeric array, TABLE is a numeric matrix. If the elements of x are nonnegative integers, TABLE includes 0 counts for integers between 1 and max(x) that do not appear in x.


If x is a categorical variable, character array, or cell array of strings, TABLE is a cell array.


tabulate(x) with no output arguments displays the table in the command window.
Examples


tabulate([1 2 4 4 3 4])
? Value ?Count ?Percent
? 1 ? ? ?1 ? ? ?16.67%
? 2 ? ? ?1 ? ? ?16.67%
? 3 ? ? ?1 ? ? ?16.67%
? 4 ? ? ?3 ? ? ?50.00%

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