MATLAB: Imwrite filename

imwrite

Dear all, How can I save an image with the file name being the value of a variable?

The following code works in exporting the image but not in assigning the file name the way I need.

R is the name of the variable…

Thanks, Diego

Matlab code
      imwrite(X.cdata, 'R''.png')

Best Answer

Thank you Fangjun and Image Analyst. Your tip Fangjun point me to the answer.

imwrite(X.cdata, [R{1}, '.png'])

Regards,

Diego

Related Solutions

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().

MATLAB: Imwrite function for conversion issue

if isfloat(A)
   temp = uint8(A * 255);
   imwrite(filename, temp);
else
   imwrite(filename, A);
end

Best Answer

Related Solutions

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

MATLAB: Imwrite function for conversion issue

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