将嵌套的结构数组重塑为具有大小不同的元素的单元格数组 [英] Reshaping nested struct array to cell array having elements with different sizes

问题描述

在MATLAB中，我具有以下形式的struct数组:

In MATLAB, I have a struct array of the following form:

a(1).b.c = rand(1,10);
a(1).b.cSize = length(a(1).b.c);
a(2).b.c = rand(1,11);
a(2).b.cSize = length(a(2).b.c);
a(3).b.c = rand(1,12);
a(3).b.cSize = length(a(3).b.c);
a(4).b.c = rand(1,13);
a(4).b.cSize = length(a(4).b.c);
a(5).b.c = rand(1,14);
a(5).b.cSize = length(a(5).b.c);
a(6).b.c = rand(1,15);
a(6).b.cSize = length(a(6).b.c);

我想创建一个单元格数组c，其中包含嵌套结构的不同大小的字段a.b.c，而无需使用for循环.

I would like to create a cell array c that contains the differently sized fields a.b.c of the nested struct, without using for loops.

我尝试了以下操作:

c = {a.b.c}

不起作用，并返回以下错误消息:

which is not working and returns the following error message:

期望大括号或点索引表达式的一个输出， 但是有6个结果.

Expected one output from a curly brace or dot indexing expression, but there were 6 results.

到目前为止，我发现的最佳解决方案是

The best solution I've found so far is the following

cellfun(@(x) x.c, {a.b}, 'UniformOutput', false)

有没有使用cellfun的更快的解决方案?也许有些reshape命令?

Is there a faster solution without using cellfun? Maybe some reshape command?

推荐答案

您可以从a.b创建一个structrue数组，然后从该数组中提取字段c.

You can create a structrue array from a.b then extract the field c from the array.

ab = [a.b];
result = {ab.c}

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