How to save the output value from struct H(Index).b to variable f ?

Question

Aberna P 2023-9-25

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2025332-how-to-save-the-output-value-from-struct-h-index-b-to-variable-f

编辑： akshatsood 2023-10-13

Code:

Index=1;

if(H(Index).e > 0.5 && H(Index).c > 0.9 || H(Index).c < 0.5 && H(Index).en > 0.2 && (H(Index).x)>10)

f=H(Index).b;

fprintf("Embedding Region %d\n",f);

Index=Index+1;

Explain:

Actually the H struct has five field and based on the if condition it display the output correctly but the issue is, all the values is not stored in variable ' f ', only the last value is shown as f value? How to store all the selected values to the variable f? If i declare f as array then also the last value is alone store in f? where am lagging am not getting? Can anybody suggest solution.

Thanks in Adavnce.

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Aberna P 2023-9-25

Thanks for the response divyanshu. But it doesnt work, it print 1 as the output for nymber of n times. its not storing the b values in f.

Dyuman Joshi 2023-9-26

@Aberna P Could you please attach the whole code you are working with?

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Answer 1

akshatsood 2023-10-13

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2025332-how-to-save-the-output-value-from-struct-h-index-b-to-variable-f#answer_1332869

编辑：akshatsood 2023-10-13

在 MATLAB Online 中打开

Hi Aberna,

I understand that you want to store the output from a struct 'H' into a variable 'f'. To achieve this, you need to declare the variable 'f' as a vector with the same size as 'H'. Based on the provided code snippet and the information given in the question, I have assumed the existence of a struct 'H' and prepared a script to guide you through the correct approach. Please refer to the code snippet attached herewith.

% create an empty struct array
H = struct('e', [], 'c', [], 'en', [], 'x', [], 'b', []);
% generating random values for each field
for i = 1:5
    H(i).e = round(0.5+rand(1), 1);
    H(i).c = round(1+rand(1), 1);
    H(i).en = round(rand(1), 1);
    H(i).x = round(10*rand(1), 1);
    H(i).b = round(rand(1), 1);  
end
% preallocating f to store the output
f = zeros(1,5); 
Index = 1;
while Index <= 5  
    if (H(Index).e > 0.5 && H(Index).c > 0.9) || ((H(Index).c < 0.5 && H(Index).en > 0.2) ...
            && (H(Index).x > 10))
        
        f(Index) = H(Index).b;            
        fprintf("Embedding Region %.1f\n",f(Index));
    end
    Index=Index+1;
end

Now, the variable 'f' will store the value corresponding to the field 'b' in the struct 'H'. Since the complete code was not provided, I have made assumptions to illustrate the correct methodologies. Update the above code as per your needs.

I hope this helps.