Compare numel of multiple variables

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Grzegorz Lippe
Grzegorz Lippe 2022-3-4
评论： Stephen23 2022-3-4
How can I compare the sizes of multiple variables easyly?
%%
a = [1 2 3 4] ;
b = [1 2 3 4] ;
c = [1 2 3 4] ;
all_numel_equal = numel(a) == numel(b) == numel(c) % Evaluates to false, because 4 == 4 == 4
% evaluates to true == 4
% first not so elegant possiblitly:
all_numel_equal = (numel(a) == numel(b)) &&...
(numel(a) == numel(c))
% second ugly possiblity:
try
[a(:) b(:) c(:)] ;
all_numel_equal = true
catch
all_numel_equal = false
end

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采纳的回答

Matt J
Matt J 2022-3-4
编辑：Matt J 2022-3-4
Ran in:
a = [1 2 3] ;
b = [1 2 3 4] ;
c = [1 2 3 4] ;
isequal(numel(a),numel(b),numel(c))
ans = logical
0

更多回答（1 个）

Matt J
Matt J 2022-3-4
编辑：Matt J 2022-3-4
Ran in:
a = [1 2 3] ;
b = [1 2 3 4] ;
c = [1 2 3 4] ;
L=cellfun(@numel,{a,b,c});
all_numel_equal = all(L==L(1))
all_numel_equal = logical
0

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