matlab - 倍频程/MATLAB : How to compare structs for equality?

Question

如何在 Octave(或 matlab)中比较两个结构的相等性？

尝试使用 == 运算符会产生:

binary operator `==' not implemented for `scalar struct' by `scalar struct' operations

Answer 1

使用 isequal 或 isequalwithequalnans 函数。示例代码:

s1.field1 = [1 2 3];
s1.field2 = {2,3,4,{5,6}};
s2 = s1;
isequal(s1,s2)  %Returns true (structures match)

s1.field3 = [1 2 nan];
s2.field3 = [1 2 nan];
isequal(s1, s2)              %Returns false (NaN ~= NaN)
isequalwithequalnans(s1, s2) %Returns true  (NaN == NaN)

s2.field2{end+1}=7;
isequal(s1,s2)               %Returns false (different structures)

isequal(s1, 'Some string')   %Returns false (different classes)