您可以使用

You can use uiputfile to graphically get the file name. For example:

[filename, pathname, filterindex] = uiputfile('', 'Select file');

然后使用dlmwrite将变量(例如data)保存到该文件:

Then use dlmwrite to save a variable, say data, to that file:

dlmwrite(fullfile(pathname, filename), data)