根据结构名称访问结构字段 [英] access to struct fields based on struct name

问题描述

我在访问MATLAB中的struct的每个字段时遇到问题.我试图将其转换为Cell，但它给了我错误:( 如何通过2个循环访问每个字段? 我写了以下代码:

I have problem to access each field of struct in MATLAB. I tried to convert it to Cell however, it give me error :( How can I access each field with 2 loops ? I have wrote following code :

a=load(goalMFile);
struct_name=fieldnames(a);
struct_cell=struct2cell(a);
cellsz = cellfun(@size,struct_cell,'uni',false);
ans=cellsz{:};
row=ans(1);
col=ans(2);
for counter1=1:row
for counter2=1:col
a.struct_name{(counter1-1)*counter2+counter2} % the error is Here
end

end

如果有人能帮助我，我将非常感激.

I will really appreciate, If anyone could help me.

推荐答案

您可以使用s.(fname)动态访问结构，其中fname是char变量.注意fname周围的( ).

You can access a structure dynamically with s.(fname) where fname is char variable. Note the ( ) around fname.

一个例子将阐明:

% Example structure
s.A = 10;
s.B = 20;

% Retrieve fieldnames
fnames = fieldnames(s);

% Loop with numeric index
for ii = 1:numel(fnames)
    s.(fnames{ii})
end

% ...or loop by fieldname directly
for f = fnames'
    s.(f{:})
end

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