Changing Structure Array fields to multiple different column vectors

Question

Austin Baggetta 2020-5-10

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https://ww2.mathworks.cn/matlabcentral/answers/524478-changing-structure-array-fields-to-multiple-different-column-vectors

回答： Ankriti Sachan 2020-5-13

Hi everyone, I need some help. I've created a structure array that is a 771x1 structure with three fields. All three fields are separate cell arrays, however I need fields 2 and 3 to be 771 different column vectors, any thoughts?

For example, the "Frame" field has an 89x1 double, a 45x1 double, a 38x1 double, etc., but I need them to be separate column vectors. num2cell turns everything into one long vector. The "Frame" vector corresponds to the "xy" field I have, which contains different particle's positions. This is why the "Frame" field needs to be separate column vectors, as each particle is in a specific number of frames.

Thank you for your help!

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Sindar 2020-5-11

It sounds like a table may be a better way of storing your data. struct2table might work

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Answer 1

Ankriti Sachan 2020-5-13

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https://ww2.mathworks.cn/matlabcentral/answers/524478-changing-structure-array-fields-to-multiple-different-column-vectors#answer_432198

According to the explanation, it looks like you want to change the vectors in the "Frame" field into an [1X1] array. If it is correct, then you probably need to programmatically work on your structure’s field to bring it to a specific dimension array. You can try merging arrays into one and then reshape it according to your need. You can have a look at these links: