How to delete all Files not listed in "FileName" variable?

Question

Smithy 2022-12-7

0
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https://ww2.mathworks.cn/matlabcentral/answers/1872722-how-to-delete-all-files-not-listed-in-filename-variable

编辑： Stephen23 2023-1-3

采纳的回答： Walter Roberson

在 MATLAB Online 中打开

Hello everybody,

I have the file lists to be kept and other files should be deleted from the folders.

I tried as below. and error occures that Error using delete, Name must be a text scalar.

Is there a way to delete the files not listed in "FileName" variable?

clear; close all; clc;
% viriable "FileName" is the image file to be kept. 
% and other files not listed in "FileName" should be deleted.
FileName = ["q1.jpg";"q2.jpg";"q3.jpg"];
temp = table(FileName);
MyFolderInfo = dir(fullfile(pwd, '*'));
MyFolderInfo = MyFolderInfo(~ismember({MyFolderInfo.name},{'.','..'}));
fileList = string({MyFolderInfo.name});
noNeed = [];
for i=1:length(fileList)
    if ~strcmp(fileList(i),FileName)
        noNeed = [noNeed; fileList(i)];
    end
end
F = fullfile(pwd,noNeed);
delete(F)   % Errr occures of Error using delete, Name must be a text scalar.