How to sum field elements inside a large structure array.

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Nasser Alqurishi 2021-6-5

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评论： Nasser Alqurishi 2021-6-5

I have mat. data file with the follwoing spes:

data=load('load_models.mat', 'models')
data = 
  struct with fields:
    models: {1000×1 cell}
>> models
models =
  1000×1 cell array
    0    {1440×3 double}
    1    {1440×3 double}
    :          :
   999   {1440×3 double}
  

Each cell of the 1000 rows contais (1440×3) matrix.

What I want to get is a new array of size (1440×3), where the elemnts of the new array is the summation of corresponding individal feild elements of the whole 1000×1 struct.

Any fuction of example approch can help me achive my opjective?

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Answer 1

Image Analyst 2021-6-5

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https://ww2.mathworks.cn/matlabcentral/answers/848710-how-to-sum-field-elements-inside-a-large-structure-array#answer_717540

Try mean() and cell2mat(). If that does not work, can you attach your .mat file with the paperclip icon (if it's less than 5 MB in size).

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Image Analyst 2021-6-5

在 MATLAB Online 中打开

Does this work for you:

fileName = 'active_power_load_models.mat'
s = load(fileName)
ca = s.p_zip_models;
theSums = zeros(1440, 3);
for k = 1 : length(ca)
	thisArray = ca{k};
	theSums = theSums + thisArray;
end