How to remove empty struct fields [ ] from a group a struct fields ?

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vijay chandra
vijay chandra 2017-11-23
回答： Robert 2020-6-12
A: [1X1 struct] B: [1X1 struct] C: [1X1 struct] D: [ ] E: [ ] F: [ ] G: [ ] ,...................like this some structure are there. I want to remove those empty fields from that froup of fields.

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采纳的回答

Jos (10584)
Jos (10584) 2017-11-24
Does this do what you want?
% create a structure with empty fields
S.A = 'x' ; S.B = [] ; S.C = 1:5 ;
fn = fieldnames(S)
tf = cellfun(@(c) isempty(S.(c)), fn)
S2 = rmfield(S, fn(tf))

更多回答（2 个）

sourav malla
sourav malla 2019-6-26
编辑：sourav malla 2019-6-26
You can try like this:-
out = {t(~cellfun(@isempty,{t.places})).places};
t = cell2struct(out,{'places'},1);
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MSani
MSani 2019-6-27
@Stephen Thank you very much! This worked like a charm :)
How I should I then save the file? As I noticed that when I clicked on the save button, it seems to change the way the file is saved and messed up the array structures in the file.

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Robert
Robert 2020-6-12
% Create struct with empty fields.
s.a = 'notEmpty';
s.b = [];
s.c = '';
s.d = 12;
fields = fieldnames(s);
sOut = rmfield(s, fields(structfun(@isempty, s)));
sOut =
struct with fields:
a: 'notEmpty'
d: 12

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