Counting the number of occurences for specific values in an array

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Shady Elsayed
Shady Elsayed 2020-5-26
回答： Rik 2020-5-26
I have an array that reads [ 1 2 3 4 5 5 4 3 2 1 ] and I want to count the number of occurences of each element
so that it gives me an array of [ 2 2 2 2 2 ]
I tried using
x(i)=sum[array(i)==array] but it gives me [ 2 2 2 2 2 2 2 2 2 2 2 ]

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回答（1 个）

Rik
Rik 2020-5-26
a=[ 1 2 3 4 5 5 4 3 2 1 ] ;
histcounts(a)
If you have non-integer data you can use the unique function to convert your vector to positive integers.

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