MATLAB: How to save image using Guide GUI

guiguideimwriteoutput

I'm trying to save an image in a TIFF format by opening a dialog box and choosing the location and the name.I know the below code opens dialog box but nothing will happen when I click save.

[FileName,PathName]= uiputfile('*.tiff','Save Workspace As');

How do I save my images?

Best Answer

uiputfile() simply gets a filename. You still have to call imwrite() to to the actual writing to disk. Try this:

% Get the name of the file that the user wants to save.
% Note, if you're saving an image you can use imsave() instead of uiputfile().
startingFolder = userpath
defaultFileName = fullfile(startingFolder, '*.*');
[baseFileName, folder] = uiputfile(defaultFileName, 'Specify a file');
if baseFileName == 0
  % User clicked the Cancel button.
  return;
end
fullFileName = fullfile(folder, baseFileName)
imwrite(yourImageArray, fullFileName);

Related Solutions

MATLAB: Saving problems, desired name

Try this:

% Get the name of the file that the user wants to save.
% Note, if you're saving an image you can use imsave() instead of uiputfile().
startingFolder = userpath % Or "pwd" or wherever you want.
defaultFileName = fullfile(startingFolder, '*.*');
[baseFileName, folder] = uiputfile(defaultFileName, 'Specify a file');
if baseFileName == 0
  % User clicked the Cancel button.
  return;
end
fullFileName = fullfile(folder, baseFileName)
% Now save whatever variables you want into a mat file
save(fullFileName, 'yourVariable1', 'yourVariable2');

MATLAB: How to prevent image that has been stored not overwrite using imwrite

Like Walter said, you're not changing img inside your loop so it's always the same. As an extra precaution against overwriting, use the exist() function

if exist(filename, 'file')
   promptMessage = sprintf('%s already exists.\nDo you want to overwrite it', filename);
   titleBarCaption = 'Overwrite?';
   buttonText = questdlg(promptMessage, titleBarCaption, 'Yes', 'No', 'Yes');
   if strcmpi(buttonText, 'Yes')
       imwrite(img.cdata,filename);
   end
else
       imwrite(img.cdata,filename);
end

Note that filename is already the full path so you don't need to send it into fullfile again when you call imwrite().

Best Answer

Related Solutions

MATLAB: Saving problems, desired name

MATLAB: How to prevent image that has been stored not overwrite using imwrite

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