我完全不明白你的问题。但请遵循csvWrite文档和date文档。你可以做这样的事情
filename_with_date_string = date() + ".csv";
directory_path = TMPDIR;
// Some matrix you want to save
M = [1:10] * 0.1;
// Create the file
file = fullfile(directory_path, filename_with_date_string);
// Fill it with your matrix
csvWrite(M, file);