单元格的“字段名称"功能的等效项 [英] Equivalent of Fieldnames function for cells

问题描述

正如标题所述，只是想知道是否有一个功能可以用作字段名(http://www.mathworks.co.uk/help/matlab/ref/fieldnames.html)，但适用于单元格.

As the title says, just wondering if there is a function that works as fieldnames (http://www.mathworks.co.uk/help/matlab/ref/fieldnames.html) does, but for cells.

所以，如果我有类似的东西:

So if I have something like:

a = imread('redsquare.bmp');
b = imread('bluesquare.bmp');
c = imread('yellowsquare.bmp');
d = imread('greysquare.bmp');

e = {a, b, c, d};

我正在尝试检索:a，b，c，d或不带扩展名的图像名称.

I'm trying to retrieve either: a, b, c, d OR the image name without the extension.

我尝试了fn = fileparts(e)和fntemp = cell2struct(e,2)，但是我无法正常工作.

I have tried fn = fileparts(e) and fntemp = cell2struct(e,2), but I can't get it working.

希望这是有道理的 谢谢

Hope this makes sense Thanks

推荐答案

单元格数组不包含任何元信息，例如字段名或文件名.如果要访问该信息，则需要更改数据存储结构.一些选项包括:

The cell array does not include any meta-information, like field name or file name. If you want access to that information you'll need to change your data storage structure. Some options include:

标量结构 当只有一个名称可供参考时非常有用.

Scalar Structure Good for when there is a single name to reference.

images.red = imread('redsquare.bmp');
images.blue = imread('bluesquare.bmp');

使用fieldnames(images)获取名称.

结构数组 有点一般.允许使用完全通用的名称(包括特殊字符和空格)，并在需要时允许其他元数据(例如大小"，作者")

Array of structures A little bit more general. Allows completely general names (including special characters and spaces) and additional metadata if you need it (like "size", "author")

images(1).name = 'red';
images(1).im   = imread('redsquare.bmp');
images(2).name = 'blue';
images(3).im   = imread('bluesquare.bmp');

使用{fieldnames.name}仅获取名称.

Containers.map 可能比您这里需要的还多，但很高兴知道. help comtainers.map了解更多.

Containers.map Probably more than you need here, but good to know about. help comtainers.map for more.

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