Matlab实现获取文件夹下所有指定后缀的文件

Sure! Here is a step-by-step guide on how to implement a MATLAB code to retrieve all files with a specific file extension in a folder:

1. First, you need to define the folder path where the files are located. You can do this by using the uigetdir function, which opens a dialog box for the user to select a folder. Alternatively, you can directly specify the folder path as a string.

folderPath = uigetdir('Select a folder'); % Open dialog box to select folder
% OR
folderPath = 'C:\\Path\\to\\folder'; % Directly specify folder path

1. Next, you need to define the file extension you want to search for. For example, if you want to retrieve all the \".txt\" files, you can set the fileExtension variable as follows:

fileExtension = '.txt';

1. Now, you can use the dir function to obtain a structure array containing information about the files in the specified folder. This function returns a structure array with fields such as name, date, and bytes.

fileList = dir(fullfile(folderPath, ['*' fileExtension]));

1. To extract only the file names from the structure array, you can use a loop to iterate over each file and store the names in a cell array.

fileNames = cell(length(fileList), 1);
for i = 1:length(fileList)
    fileNames{i} = fileList(i).name;
end

1. Finally, you can display the list of file names using the disp function or perform any further operations on the retrieved files.

disp(fileNames);

Here are two examples to illustrate the usage of the code:

Example 1: Retrieving all \".csv\" files in a folder:

folderPath = uigetdir('Select a folder');
fileExtension = '.csv';
fileList = dir(fullfile(folderPath, ['*' fileExtension]));
fileNames = cell(length(fileList), 1);
for i = 1:length(fileList)
    fileNames{i} = fileList(i).name;
end
disp(fileNames);

Example 2: Retrieving all \".jpg\" files in a specific folder:

folderPath = 'C:\\Path\\to\\folder';
fileExtension = '.jpg';
fileList = dir(fullfile(folderPath, ['*' fileExtension]));
fileNames = cell(length(fileList), 1);
for i = 1:length(fileList)
    fileNames{i} = fileList(i).name;
end
disp(fileNames);

I hope this guide helps you implement the code to retrieve files with a specific file extension in MATLAB!