(Select all that apply) In which of the following situations would you typically use a categorical array?

14 次查看（过去 30 天）

显示更早的评论

Sangat Naik 2021-10-15

1
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1564791-select-all-that-apply-in-which-of-the-following-situations-would-you-typically-use-a-categorical-a

评论： Mpho 2023-11-27

采纳的回答： Lei Hou

Please answer the below question shown in image.

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Sangat Naik 2021-10-16

Please answer any one. If any one know please answer.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Lei Hou 2021-10-17

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1564791-select-all-that-apply-in-which-of-the-following-situations-would-you-typically-use-a-categorical-a#answer_810106

Hi Sangat,

Typically, categorical is useful when your array is large, contains duplicated values and has finite set of discrete categories. For example, a very long vector of US states. A categorical array provides efficient storage and convenient manipulation of nonnumeric data. Regarding the situations you provided, I would recommend:

A list of text where some values in the list are repeated
A column in a table that labels which group each row belongs to

Thanks,

Lei

3 个评论
显示 1更早的评论隐藏 1更早的评论

Lei Hou 2021-10-19

Hi Sangat,

We can exclude "A distribution of numeric data" and "A list of all unique values". The description of "a fixed set of possibilities" is not very clear of what the data look like. If the data contains duplicated values and possible values are from a fixed set, then it is also a use case of categorical.

Thanks,

Lei

Sangat Naik 2021-10-19

Thank You

请先登录，再进行评论。

更多回答（2 个）

Arliya Marin Mathew 2021-10-21

2
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1564791-select-all-that-apply-in-which-of-the-following-situations-would-you-typically-use-a-categorical-a#answer_813118

●A list of text where some values in the list are repeated ●A fixed set of possibilities ●A column in a table that labels which group each row belongs to