matlab 删除结构中,删除空结构字段Matlab

使用循环或

arrayfun来确定哪些数组元素为空：

empty_elems = arrayfun(@(s) isempty(s.x) & isempty(s.y),A.B)

返回：[0 1 0]

要么

empty_elems = arrayfun(@(s) all(structfun(@isempty,s)), A.B);

检查所有字段是否为空(使用any而不是all来检查是否有任何元素为空而不是全部).

A.B(empty_elems) = [];

在评论中完整解决您的问题：

% find array elements that have all fields empty:

empty_elems = arrayfun(@(s) all(structfun(@isempty,s)), A.B);

% copy non-empty elements to a new array `C`:

C = A.B(~empty_elems);

% find elements of C that have y field >3

gt3_elems = arrayfun(@(s) s.y<3,C);

% delete those form C:

C(gt3_elems) = [];

逐步执行此代码并分析中间变量以了解发生了什么.应该相当清楚.