convert double array to categorical

2019 3 27
1 个回答
更新时间：2020 6 4
14 次查看（30 天）

2 个投票

Hi there!
I want to convert double array to categorical.
Double array is b:
>>a = unique(b)
>> a =
0
0.0100
0.0200
0.0300
0.0400
0.0500
0.0500 ( I don't know why there are two 0.0500)
.......
0.3400
0.4600
0.6600
1.4300
>> whos b
>> Name Size Bytes Class Attributes
b 793505x1 6348040 double
>> categorical(b)
>> Error using categorical (line 434)
Unable to create default category names. Specify
category names using the CATEGORYNAMES input argument.
I got this error while converting data type and I could not figure out where the question is. Hope you guys can help me.
Thank you very much in advance.
Yinghai

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回答（1 个）

Steven Lord
Steven Lord 2020-6-2

1 个投票

Consider using discretize.
x = rand(10, 1);
c = discretize(x, 0:0.25:1, 'categorical');
t = table(x, c)

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