The results is not absurd, but exactly as expected. Try this:
a = [];
a(1) = 1;
a(3) = 3;
disp(a)
The element a(2) is filled by a 0 implicitly. There are no "gaps" in numerical arrays. Solution:
FileList = dir('D:\testing\abrupt\*.jpg');
for iFile = 1:length(FileList)
filename = fullfile('D:\testing\abrupt\', FileList(iFile));
I = imread(filename);
I1 = rgb2gray(I);
mat1(:, :, iFile)= I1;
end
If you want to exclude the files with the even indices:
FileList = dir('D:\testing\abrupt\*.jpg');
index = 0;
for iFile = 1:2:length(FileList)
filename = fullfile('D:\testing\abrupt\', sprintf('%d.jpg', iFile));
I = imread(filename);
I1 = rgb2gray(I);
index = index + 1;
mat1(:,:, index) = I1;
end
