Matlab：引用一组m文件中的函数 [英] Matlab: reference to functions in a set of m-files

问题描述

我有一个包含n个m文件（cI_0001.m，cI_0002.m，...）的目录，用于定义每个应该用于图像转换的复杂函数，其转换形式为：

I have a directory with n m-files (cI_0001.m, cI_0002.m, ...) defining each a complex function that should be used for image transformation with imtransform the kind of:

conformal = maketform('custom', 2, 2, [], @cI_0001, []);
T = imtransform(C, conformal, ...);

在最简单的情况下，我想要一个循环，将imtransform应用于所有给定函数的图像C.所以我为没有扩展名的m文件名（m_name_list）创建了一个单元格数组，我想我需要在maketform（）中使用一种指针来指定m_name_list中的元素。如何正确制定？

In the simplest case I want a loop that apply imtransform to an image C for all the given functions. So I made a cell array for the directory with the m-file names without extension (m_name_list) and I think I need a kind of a pointer in maketform() to the elements in m_name_list. How can this be correctly formulated?

for i=1:n
   conformal = maketform('custom', 2, 2, [], @pointer_to_the_ith_element_in_m_name_list, []);
   T = imtransform(C, conformal, ...);
   imwrite(T, ...);
end

我看到提案在如何设置函数参数以执行不同的m文件集但这似乎不适用于调用maketform（）的函数。

I saw the proposal with run in How to set function arguments to execute different set of m-files but this seems not working with the function calling in maketform().

编辑：我包含一个带有函数名称+扩展名的列表，可以在其中创建指针（可能扩展到路径列表+名称）：

I include a list with function names + extension to which pointers could be made (possible extended to a list of paths+names):

m_dir_entries = dir(strcat(CM_inverse_folder_path, '*.m'));
m_name_list   = cell(1,length(m_dir_entries));
for k=1:length(m_dir_entries)
  m_name_list{k} = m_dir_entries(k).name; 
end

推荐答案

你可以使用 str2func 创建一个每个.m文件的函数句柄

You can use str2func to create a function handle to each of the .m files

% Add the folder to your path
addpath(CM_inverse_folder_path)

function_list = {'cI_0001.m', 'cI_0002.m'};

% Remove the extensions
[~, function_list] = cellfun(@fileparts, function_list, 'UniformOutput', false);

for k = 1:n
    func = str2func(function_list{k});
    conformal = maketform('custom', 2, 2, [], func, []);
    T = imtransform(C, conformal, ...);
    imwrite(T, ...);
end

% Remove the folder from the path
rmpath(CM_inverse_folder_path)

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