question about the 'stuct' of matlab?
1 view (last 30 days)
Show older comments
Why the second one gives rise to empty struct?
s.a=1; s.b=2; s.c={}
s =
a: 1
b: 2
c: {}
s = struct('a',1,'b',2,'c',{})
s =
0x0 struct array with fields:
a
b
c
0 Comments
Accepted Answer
per isakson
on 24 Nov 2014
Edited: per isakson
on 24 Nov 2014
That's the way the function struct is designed to work. See struct, Create structure array "[...]If value is an empty cell array {}, then s is an empty (0-by-0) structure."
4 Comments
Guillaume
on 24 Nov 2014
Edited: Guillaume
on 24 Nov 2014
If you do want to assign an empty cell array to a field of a structure using the struct function, you need to wrap that empty cell array into a cell array:
s = struct('a', 1, 'b', 2, 'c', {{}})
s =
a: 1
b: 2
c: {}
For that matter, even if the cell array is not empty you still need to wrap it to assign it to a scalar structure, otherwise the elements of the cell arrays are just distributed over an array of structs.
More Answers (0)
See Also
Categories
Find more on Structures in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!