How to save image from dataset in MATLAB

Hello everyone, I hope you are doing well.

with reference to my previous question :

https://www.mathworks.com/matlabcentral/answers/1667179-how-to-save-each-row-as-image-in-matlab?s_tid=srchtitle

In previous question i have the dataset of shape 3000x1000 and each row has value from 1 to 1000

and each class has 1000 samples in each row

so the code create the image of each row 1000x1000 and save in the folder

Now i have the dataset of shape 100x1000. but now i have in each row has value from 1 to 10000.

The only different is that my values in each rows change from 1 to 10000

When i try to save the image it gives blank image How can i save the value as image

%% create grayscale shapes that resemble the data
[numImages, lenImage] = size(Dataset1000);
imSz = 1000; % assuming images are 1000x1000
imbg = false(imSz);                                  % background "color"
imfg = ~imbg(1,1);                                  % forground "color"
imSizeOut=[1000 1000];                                % resize to 224 by 224
for imNum = 1:numImages        
    imData = Dataset1000(imNum,:);  % get pattern
    [~,Y] = meshgrid(1:imSz); % make a grid
    
    % black and white image
    BW = imbg;
    BW(Y==imData)=imfg;

    % resize (from 1000x1000 to 224x224)
    BW=imbinarize(imresize(double(BW),imSizeOut));
    % convert to uint8 (0 255)
    im = im2uint8(BW);
    % flip
    im = flipud(im);
    folderName = 'C/user/images';
    im_FullFilename = fullfile(folderName,sprintf('im_%06g.png',imNum));
    imwrite(im,im_FullFilename);
end

Answer 1

[yanqi liu]

load matlab1.mat
%% create grayscale shapes that resemble the data
[numImages, lenImage] = size(Dataset1000);
Dataset1000 = round(mat2gray(Dataset1000)*1000);
imSz = 1000; % assuming images are 1000x1000
imbg = false(imSz);                                  % background "color"
imfg = ~imbg(1,1);                                  % forground "color"
imSizeOut=[1000 1000];                                % resize to 224 by 224
for imNum = 10        
    imData = Dataset1000(imNum,:);  % get pattern
    [~,Y] = meshgrid(1:imSz); % make a grid
    
    % black and white image
    BW = imbg;
    BW(Y==imData)=imfg;

    % resize (from 1000x1000 to 224x224)
    BW=imbinarize(imresize(double(BW),imSizeOut));
    % convert to uint8 (0 255)
    im = im2uint8(BW);
    % flip
    im = flipud(im);
    folderName = 'C/user/images';
    im_FullFilename = fullfile(folderName,sprintf('im_%06g.png',imNum));
    imwrite(im,im_FullFilename);
end