How to sort a structure array based on a specific field

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MathWorks Support Team
We have an instruction blog on how to do that in older versions of MATLAB (before R2013b):
https://blogs.mathworks.com/pick/2010/09/17/sorting-structure-arrays-based-on-fields/
If you are using a MATLAB version newer than R2013b, you can take advantage of the "sortrows" function in tables for a simpler workflow:
>> % suppose 's' is the struct array. 'DOB' is the field that contains date and time.
>> T = struct2table(s); % convert the struct array to a table
>> sortedT = sortrows(T, 'DOB'); % sort the table by 'DOB'
>> sortedS = table2struct(sortedT) % change it back to struct array if necessary

更多回答（1 个）

Norbert Nitzsche
Norbert Nitzsche 2019-7-25
编辑：Norbert Nitzsche 2019-7-25
% suppose 's' is the struct array and you want to sort it by the values in field 'f_sortby'
[x,idx]=sort([s.f_sortby]);
s=s(idx);
  1 个评论
Bruno Luong
Bruno Luong 2020-8-3
编辑：Bruno Luong 2020-8-3
"Using curly braces should work for both numerical and text values"
Not for me
>> s=struct('num', {1 2 3})
s =
1×3 struct array with fields:
num
>> s(1)
ans =
struct with fields:
num: 1
>> s(3)
ans =
struct with fields:
num: 3
>> [x,idx]=sort({s.num})
Error using sort
Input argument must be a cell array of character vectors.

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