Casting a number into a categorical array

7 次查看（过去 30 天）
E
E 2022-6-13
评论： E 2022-6-13
Hello,
I'm trying to swith my project to categorical arrays (from a cellstr plus a numeric index). There's one feature that should be insanely simple, but I can't find a simple way to do it. I'd like to be able to cast a number or char into an existing type of categorical array. In other words, given a categorical array x, I'd like to take a number vector or cellstr y, and produce a categorical array with the categories of x (in the same order), but the entries in y:
x = categorical({'one','two','three'})
y1 = [2,2,3]
y2 = {'two','two','three'}
categorical(y1, double(x), categories(x)) % works, but is super lengthy, data-type specific, and probably inefficient
categorical(y2, cellstr(char(x)), categories(x)) % doesn't even work (returns a categorical array valued [three,three,two])
The motivation is to acquire two arrays that index into the same list of categories. Any advice appreciated!
  1 个评论
E
E 2022-6-13
(FYI I'd use an enum, but the list of categories is determined dynamically)

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Stephen23
Stephen23 2022-6-13
Ran in:
x = categorical({'one','two','three'})
x = 1×3 categorical array
one two three
c = categories(x)
c = 3×1 cell array
{'one' } {'three'} {'two' }
y = setcats(categorical({'two','two','three'}),c)
y = 1×3 categorical array
two two three
d = categories(y)
d = 3×1 cell array
{'one' } {'three'} {'two' }

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Categorical Arrays 的更多信息

标签

产品


版本

R2021a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by