How can I remove . and ..

clear all
clc
sad = dir('D:\Project\DB1\test\'); % Returns both folders and files
% sad = dir(pwd); % Returns both folders and files
cell_array_of_folder_names = {sad([sad.isdir]).name}; % Select folder names
% cell_array_of_folder_names( strncmp( cell_array_of_folder_names, ".", 1 ) ) = []; % Remove '.' and '..'
sorted_cell_array_of_folder_names = sort_nat( cell_array_of_folder_names );
% sorted_cell_array_of_folder_names = cell_array_of_folder_names; % if you don't have sort_nat
whos sorted_cell_array_of_folder_names
%----------------
[mp1, np] = size(sorted_cell_array_of_folder_names); % compute size = number of subfolders & files & . & ..
csf1=0; % counter of JUST subfolders found in PF
t=1;
Group_Test1 = zeros(1, mp1);
for i=1:mp1
% Skip . and ..
if endsWith(sorted_cell_array_of_folder_names{i}, '.') || endsWith(sorted_cell_array_of_folder_names{i}, '..')
% Skip . and ..
continue; % Skip to bottom of loop.
end
% Keep only folders:
csf1 = csf1 +1; % one sub folder found
SFN = sorted_cell_array_of_folder_names(i).name ;% extract his name
tifList = ls(sprintf('%s%s%s%s',PF,SFN,'\','*.tif')); % list all jpg files
[ms1, ns] = size(tifList); % ms = number of image files found
% Processing for each tif file:
for j=1:ms1
tifFileName = tifList(j,:); % extract name of tif file
% IM=imread([PF SFN '\' tifFileName]);
%t=1;
%for i=1:csf1
% for j=1:ms1
Group_Test1(t)={i};
t=t+1;
end
PF_SFN_imgName = sprintf('%s%s%s',PF,SFN,'\',tifFileName);
end
Group_Test1 = Group_Test1(1:t-1); % Crop off any unused elements
save('Group_Test','Group_Test1');
%----------------------

1 Comment

Tip: use FULLFILE to join strings into one filepath, rather than SPRINTF or string concatenation.

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 Accepted Answer

Stephen23
Stephen23 on 28 May 2021
Replace
{sad([sad.isdir]).name}
with
setdiff({sad([sad.isdir]).name},{'..','.'})

17 Comments

Note that in theory using setdiff() like that could reorder the files. In practice it is unlikely to reorder the files (not impossible though.)
Given that the order returned by DIR is not specified, I don't see how that makes much difference.
Name Size Bytes Class Attributes
sorted_cell_array_of_folder_names 1x937 110350 cell
Dot indexing is not supported for variables of this type.
Error in Untitled (line 24)
SFN = sorted_cell_array_of_folder_names(i).name ;% extract his name
>>
This error after changes
Replace
SFN = sorted_cell_array_of_folder_names(i).name ;% extract his name
with
SFN = sorted_cell_array_of_folder_names{i} ;% extract his name
In context the hypothetical reordering of setdiff() is irrelevant anyhow because the nat sort is done right afterwards ;-)
It does not enter the for j loop, so Group_Test1 is empty
Do you still have
if endsWith(sorted_cell_array_of_folder_names{i}, '.') || endsWith(sorted_cell_array_of_folder_names{i}, '..')
if so then you can remove that test and the continue, since you already filtered out . and ..
I recommend that you rewrite
tifList = ls(sprintf('%s%s%s%s',PF,SFN,'\','*.tif')); % list all jpg files
in terms of dir() and fullfile()
I do not see where you have defined PF ?
Is there a reason you are not using
PF = 'D:\Project\DB1\test';
sad = dir(fullfile(PF, '*', '*.tif'));
cell_array_of_file_names = fullfile({sad.folder}, {sad.name});
and then cell_array_of_file_names would be the complete list of all .tif files that are one folder level down from DB1\test ?
I want to order each folder separately and give all the pictures in it the same name or label
First the folders are arranged, then all the pictures inside the folder are named with the same name. For example: The pictures in Volume 1 are all named with Name 1 ... and so on ...
[folders, basenames, ext] = fileparts(cell_array_of_file_names);
G = findgroups(folders);
[~, labels, ~] = fileparts(folders);
Now you for each entry cell_array_of_file_names{K} then its associated label is labels{K} and you can process all members of the same folder by processing
maxG = max(G);
for fidx = 1 : maxG
matches = find(G == fidx);
these_entries = cell_array_of_file_names(matches);
this_label = labels{matches(1)};
%these_entries is a cell array containing only file names
%that are all part of the same folder, and the folder name
%is in this_label
end
clear all
clc
sad = dir('D:\Project\DB1\test\'); % Returns both folders and files
cell_array_of_folder_names = {sad([sad.isdir]).name}; % Select folder names
cell_array_of_folder_names( strncmp( cell_array_of_folder_names, ".", 1 ) ) = []; % Remove '.' and '..'
folder_names = sort_nat( cell_array_of_folder_names );
%----------------
[folders, basenames, ext] = fileparts(cell_array_of_folder_names);
G = findgroups(folders);
[~, labels, ~] = fileparts(folders);
maxG = max(G);
for fidx = 1 : maxG
matches = find(G == fidx);
these_entries = folder_names(matches);
this_label = labels{matches(1)};
%these_entries is a cell array containing only file names
%that are all part of the same folder, and the folder name
%is in this_label
end
%save('Group_Test','Group_Test1');
%----------------------
Error using fileparts (line 37)
Input must be a row vector of characters or string scalar.
Error in Untitled3 (line 9)
[folders, basenames, ext] = fileparts(cell_array_of_folder_names);
>>
if ispc()
PF = fullfile('D:\Project\DB1\test\', '*', '*.tif');
else
%for demonstration purposes ONLY.
%MATLAB Answers does not have nat_sort installed, so install it
td = tempname;
mkdir(td);
tz = [td '.zip'];
urlwrite('https://www.mathworks.com/matlabcentral/mlc-downloads/downloads/submissions/10959/versions/4/download/zip/sort_nat.zip', tz);
unzip(tz, td)
addpath(td)
%now point us to a directory we know that some tif files are in
PF = fullfile( fileparts(fileparts(which('cameraman.tif'))), '**', '*.tif');
end
sad = dir(PF); % Returns files only
cell_array_of_file_names = fullfile({sad.folder}, {sad.name});
[folders, basenames, ext] = fileparts(cell_array_of_file_names);
G = findgroups(folders);
[~, labels, ~] = fileparts(folders);
Groups = struct();
maxG = max(G);
for fidx = 1 : maxG
matches = find(G == fidx);
these_entries = cell_array_of_file_names(matches);
these_entries = sort_nat( these_entries );
this_label = labels{matches(1)};
%these_entries is a cell array containing only file names
%that are all part of the same folder, and the folder name
%is in this_label
Groups.(this_label) = these_entries;
end
Groups
Groups = struct with fields:
imdata: {1×33 cell}
Groups.(this_label).'
ans = 33×1 cell array
{'/MATLAB/toolbox/images/imdata/AT3_1m4_01.tif'} {'/MATLAB/toolbox/images/imdata/AT3_1m4_02.tif'} {'/MATLAB/toolbox/images/imdata/AT3_1m4_03.tif'} {'/MATLAB/toolbox/images/imdata/AT3_1m4_04.tif'} {'/MATLAB/toolbox/images/imdata/AT3_1m4_05.tif'} {'/MATLAB/toolbox/images/imdata/AT3_1m4_06.tif'} {'/MATLAB/toolbox/images/imdata/AT3_1m4_07.tif'} {'/MATLAB/toolbox/images/imdata/AT3_1m4_08.tif'} {'/MATLAB/toolbox/images/imdata/AT3_1m4_09.tif'} {'/MATLAB/toolbox/images/imdata/AT3_1m4_10.tif'} {'/MATLAB/toolbox/images/imdata/autumn.tif' } {'/MATLAB/toolbox/images/imdata/board.tif' } {'/MATLAB/toolbox/images/imdata/cameraman.tif' } {'/MATLAB/toolbox/images/imdata/canoe.tif' } {'/MATLAB/toolbox/images/imdata/cell.tif' } {'/MATLAB/toolbox/images/imdata/circbw.tif' } {'/MATLAB/toolbox/images/imdata/circuit.tif' } {'/MATLAB/toolbox/images/imdata/eight.tif' } {'/MATLAB/toolbox/images/imdata/forest.tif' } {'/MATLAB/toolbox/images/imdata/hotcoffee.tif' } {'/MATLAB/toolbox/images/imdata/kids.tif' } {'/MATLAB/toolbox/images/imdata/logo.tif' } {'/MATLAB/toolbox/images/imdata/m83.tif' } {'/MATLAB/toolbox/images/imdata/mandi.tif' } {'/MATLAB/toolbox/images/imdata/moon.tif' } {'/MATLAB/toolbox/images/imdata/mri.tif' } {'/MATLAB/toolbox/images/imdata/paper1.tif' } {'/MATLAB/toolbox/images/imdata/pout.tif' } {'/MATLAB/toolbox/images/imdata/shadow.tif' } {'/MATLAB/toolbox/images/imdata/spine.tif' }
>> Untitled3
Error using fileparts (line 37)
Input must be a row vector of characters or string scalar.
Error in Untitled3 (line 21)
[folders, basenames, ext] = fileparts(cell_array_of_file_names);
>>

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R2019a

Asked:

on 28 May 2021

Commented:

on 31 May 2021

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