How to find unique values in a field of a nested struct

Question

elisa ewin 2017-3-30

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/332734-how-to-find-unique-values-in-a-field-of-a-nested-struct

回答： KSSV 2017-3-30

采纳的回答： KSSV

matlab.mat

在 MATLAB Online 中打开

Hi,

I have a nested struct user.data (attached) anda I want to find the unique values of the field touristicRoute (user.data.touristicRoute)

I have tried this code:

for m=1:size(Cluster_USERS,1)
    for i=1:size(userTouristicTraj(m).touristicData,2)
        if (user(m).data(i).touristicRoute~=0)
            uniqueValues=unique(user(m).data(i).touristicRoute)
        end
    end
end

but it doesn't give me the right value, can you help me?

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Jan 2017-3-30

What is "the right value"? The posted code does give you "unique values of the field touristicRoute". Or do you get an error message? Please explain exactly, what you need.

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Answer 1

KSSV 2017-3-30

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/332734-how-to-find-unique-values-in-a-field-of-a-nested-struct#answer_261018

在 MATLAB Online 中打开

load matlab.mat
N = length(user) ;
iwant = cell(N,1) ;
for i = 1:N
    M = length(user(i).data) ;
    val = cell(M,1) ;
    for j = 1:M
        val{j} = user(i).data(j).touristicRoute ;
    end
    val = cell2mat(val) ;
    iwant{i} = unique(val) ;
end