本文介绍如何使用tabulate函数来统计向量中各数字出现的频次，并展示百分比。该函数适用于数值型、分类变量、字符数组或字符串单元格数组等数据类型。
求重复数字的个数使用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%
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%
扫一扫
2375
被折叠的 条评论
为什么被折叠?
到【灌水乐园】发言
