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Create a new array of structures from another array of structures just keeping some fields
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Let's assume I have an array of N structures called array with fields a, b and c. I was wondering if there is any closed form of creating a new array of structures (lets called it newArray) from the original array but with only some of its fields (e.g. a and b). I think this can be a quite common task and I would be surprised if there were no close form of performing it in Matlab.
I have found two ways of performing this:
- Copying field by field like:[newArray.a] = array.a;[newArray.b] = array.b;
- Copying the whole array of structures and removing the unwanted fields:newArray = array;newArray = rmfields(newArray,'c')
However, none of them looks elegant to me. I think there might be a way of copying the array indicating the fields you want to keep.
Any help on this? thanks in advance!
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Answers (1)
Walter Roberson
on 28 Jan 2016
Some people would use struct2cell() and extract portions of the result and then cell2struct() that. But copying by field would be faster.
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