How can I save line 1 in all images

I have an image directory consist I1, I2,....In same size I1=[1 1 1 0;1 1 1 0;1 1 1 0]; I2=[1 0 1 0;1 0 1 0;1 0 1 0]; .... In=[1 1 0 1;1 1 0 1;1 1 0 1]; how can I save data=[1 1 1 0; 1 0 1 0;....1 1 0 1]( 1 1 1 0: line 1 of image I1,....1 1 0 1: line 1 of image In)

[Jan]

What is "an image directory"? What does "save data" mean in your problem? Why do you use "l1", "l2", ... instead of a 3D array? Then getting the 1st line would be trivial.

[yen]

my image directory contain 44 image same size 49x50, all image is barcode image have black bars is 0, white bars is 1

This is my code:

function [data targets]=docmau()

myFolder = 'Tapmau';

filePattern = fullfile(myFolder, '*.bmp');

bmpFiles = dir(filePattern);

size=length(bmpFiles);

for k = 1:length(bmpFiles)

baseFileName = bmpFiles(k).name;

fullFileName = fullfile(myFolder, baseFileName);

mang{k}=imread(fullFileName);

% imshow(imageArray); % Display image.

% drawnow;

% Force display to update immediately.

end

for i = 1:length(bmpFiles)

matrix{i}=reshape(mang{i},[],1);

matrix{i}=double(matrix{i});

%k=length(data{i})

end

data=matrix{1};

for i = 2:length(bmpFiles)

data=[data matrix{i}];

end

targets=eye(44);

I want get matrix{i} is 2d array contain only line1 because all my image have same lines

Answer 1

[Andrei Bobrov]

I1=[1 1 1 0;1 1 1 0;1 1 1 0]; 
I2=[1 0 1 0;1 0 1 0;1 0 1 0]; 
In=[1 1 0 1;1 1 0 1;1 1 0 1];

variant 1

I = [I1 I2 In];
data = reshape(I(1,:),size(I1,2),[]).'

variant 2

I = cat(3,I1,I2,In);
data = permute(I(1,:,:),[3 2 1])