How to know the quatity of the number in an array

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uncung fgv 2013-5-16

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采纳的回答： Azzi Abdelmalek

my data is:

A=[1 1 2 1 1 1 2 1 1 1 3 3 3 1 1 3 4 1 2 1 2 2 1 1 1 1 3 2 2 3 1 7 1 1 1 1 3 1 1 5 2 1 1 1 1 1 1 1 1 1 1 1 4 1 1 2 2 1 2 4 3 4 1 1 2 2 2 1 1 1 1 2 2 3 1 2 2 1 2 2 3 3 3 2 1 2 1 3 3 4 2 1 1 4 1 1 2 1 1 3 1 2 2 1 1 1 1 1 3 3 2 1 3 2 1 2 1 1 2 1 1 2 1 2 1 1 1 2 1 1 1 2 2 1 2 1 1 1 1 1 1 1 1 1 3 2 2 1 1 2 1 1 1 1 1 1 1 2 3 3 2 2 1 1 2 1 1 4 1 1 2 3 1 3 1 1 1 2 2 3 1 2 1 1 3 1 1 2 2 1 ]

I want to know how many times or the quantity of number 1 in my array.

thank you.

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uncung fgv 2013-5-16

am I missing this question?

I dont know exactly in english.

I want to know how many times the 1, or 2, or 3 ... is mentioned in that array.

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采纳的回答

Azzi Abdelmalek 2013-5-16

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https://ww2.mathworks.cn/matlabcentral/answers/76066-how-to-know-the-quatity-of-the-number-in-an-array#answer_85722

在 MATLAB Online 中打开

out=sum(A(A==1))

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uncung fgv 2013-5-16

actually I want:

how many times alphabet/number/character 2 is mentioned in that array.

not the sum/amount.

uncung fgv 2013-5-16

yes, thank you. sean de wolski. your answer is hidden.

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