如何获取MATLAB中特定目录下的所有文件？ [英] How to get all files under a specific directory in MATLAB?

问题描述

我需要将所有这些文件放在 D：\dic 下，并循环使用以进一步处理。

MATLAB是否支持这种操作？

可以在其他脚本（如PHP，Python ...）中完成...

解决方案

更新：由于这篇文章很旧，而且我在这段时间内修改了这个实用程序供我自己使用，以为我应该发布一个新版本。我最新的代码可以在 MathWorks文件交换找到： dirPlus.m 。您还可以从 GitHub 获取来源。

<我做了一些改进。现在，您可以选择添加完整路径或仅返回文件名（从 Doresoom 和 Oz Radiano ）并应用常规表达式模式到文件名（从彼得D ）。此外，我添加了对每个文件应用验证功能的功能，允许您根据除了其名称（即文件大小，内容，创建日期等）之外的标准来选择它们。

---

注意：在较新版本的MATLAB（R2016b及更高版本）中， dir 功能具有递归搜索功能！所以您可以这样做来获取当前文件夹的所有子文件夹中所有 *。m 文件的列表：

  dirData = dir（'** / *。m'）; 
  

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旧代码:(用于后代）

这是一个函数，递归地浏览给定目录的所有子目录，收集所有找到的文件名的列表：

  function fileList = getAllFiles（dirName）
 
 dirData = dir（dirName）; ％＃获取当前目录的数据
 dirIndex = [dirData.isdir]; ％＃查找目录的索引
 fileList = {dirData（〜dirIndex）.name}'; ％'＃获取文件列表
如果〜isempty（fileList）
 fileList = cellfun（@（x）fullfile（dirName，x），...％＃预设文件路径
 fileList，'UniformOutput'，false）; 
 end 
 subDirs = {dirData（dirIndex）.name}; ％＃获取子目录列表
 validIndex =〜ismember（subDirs，{'。'，'..'}）; ％＃查找子目录的索引
％＃不是'。'或'..'
 for iDir = find（validIndex）％＃循环有效子目录
 nextDir = fullfile（dirName，子目录{IDIR}）; ％＃获取子目录路径
 fileList = [fileList; getAllFiles（nextDir）]; ％＃递归调用getAllFiles 
 end 
 
 end 
  

保存后您可以通过以下方式调用上述函数：

  fileList = getAllFiles（'D：\\ \\dic'）; 
  

I need to get all those files under D:\dic and loop over them to further process individually.

Does MATLAB support this kind of operations?

It can be done in other scripts like PHP,Python...

解决方案

Update: Given that this post is quite old, and I've modified this utility a lot for my own use during that time, I thought I should post a new version. My newest code can be found on The MathWorks File Exchange: dirPlus.m. You can also get the source from GitHub.

I made a number of improvements. It now gives you options to prepend the full path or return just the file name (incorporated from Doresoom and Oz Radiano) and apply a regular expression pattern to the file names (incorporated from Peter D). In addition, I added the ability to apply a validation function to each file, allowing you to select them based on criteria other than just their names (i.e. file size, content, creation date, etc.).

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NOTE: In newer versions of MATLAB (R2016b and later), the dir function has recursive search capabilities! So you can do this to get a list of all *.m files in all subfolders of the current folder:

dirData = dir('**/*.m');

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Old code: (for posterity)

Here's a function that searches recursively through all subdirectories of a given directory, collecting a list of all file names it finds:

function fileList = getAllFiles(dirName)

  dirData = dir(dirName);      %# Get the data for the current directory
  dirIndex = [dirData.isdir];  %# Find the index for directories
  fileList = {dirData(~dirIndex).name}';  %'# Get a list of the files
  if ~isempty(fileList)
    fileList = cellfun(@(x) fullfile(dirName,x),...  %# Prepend path to files
                       fileList,'UniformOutput',false);
  end
  subDirs = {dirData(dirIndex).name};  %# Get a list of the subdirectories
  validIndex = ~ismember(subDirs,{'.','..'});  %# Find index of subdirectories
                                               %#   that are not '.' or '..'
  for iDir = find(validIndex)                  %# Loop over valid subdirectories
    nextDir = fullfile(dirName,subDirs{iDir});    %# Get the subdirectory path
    fileList = [fileList; getAllFiles(nextDir)];  %# Recursively call getAllFiles
  end

end

After saving the above function somewhere on your MATLAB path, you can call it in the following way:

fileList = getAllFiles('D:\dic');

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