Store the structure fields generated in a for loop into a vector

Question

Karthik Brs 2015-10-27

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https://ww2.mathworks.cn/matlabcentral/answers/251248-store-the-structure-fields-generated-in-a-for-loop-into-a-vector

编辑： Stephen23 2015-10-27

Hello everyone, I have a small problem here, my 1*2 struct of the name 'ord' has 7 fields as can be seen in the figure.

This structure is generated in a 'for' loop. So, depending on the looping condition it can also be a 1*3... 1*n struct. I am required to create a vector which contains the field data of 'rpm' which gets generated each time the 'for' loop runs. In other words, I simply want to store ord(1).rpm, ord(2).rpm and so on.. into vectors. In this case it is just a 1*2 struct, I am looking for a code which can store the data generated in the rpm field as and when it gets generated while in loop!

Thank you in advance!

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Answer 1

Thorsten 2015-10-27

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编辑：Thorsten 2015-10-27

在 MATLAB Online 中打开

Use a cell array:

RPM{i} = ord.rpm;

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Stephen23 2015-10-27

编辑：Stephen23 2015-10-27

在 MATLAB Online 中打开

Rather than doing this one element-at-a-time and extending the cell array, the most efficient answer is to get all of the values into one cell array like this:

{ord.rpm}

And read this to know how it works:

http://www.mathworks.com/help/matlab/matlab_prog/access-multiple-elements-of-a-nonscalar-struct-array.html

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