MATLAB: Image Resizing before loading

Image Processing Toolboxresize image

Hello Community,
When I read in an image – it is always too big to fit on screen so needs resizing, as below:
>> figure
>> myImage = ('IMG_2512.JPG');
>> imshow(myImage)
Warning: Image is too big to fit on screen; displaying at 17% 
> In imuitools\private\initSize at 71
  In imshow at 282
How can I resize the image beforehand so this error is not a problem, and it speeds up the loading process?
Thanks.
Regards,
10B.

Best Answer

That's not an error. It's not even really a warning - I consider it more of a notification. Just ignore it. If you want to suppress that warning, run this function:
% http://www.mathworks.com/help/matlab/matlab_prog/suppress-warnings.html
function TurnOffWarnings
  try
    % To set the warning state, you must first know the message identifier for the one warning you want to enable. 
    % Query the last warning to acquire the identifier.  For example: 
    % warnStruct = warning('query', 'last')
    % messageID = warnStruct.identifier
    % messageID =
    %    MATLAB:concatenation:integerInteraction
    
    % Turn off this warning "Warning: Image is too big to fit on screen; displaying at 33% "
    warning('off', 'Images:initSize:adjustingMag');
    
    % Get rid of warning about directory already existing: 
    % "Warning: Directory already exists."
    warning('off', 'MATLAB:MKDIR:DirectoryExists');
    % Turn off note "Warning: Added specified worksheet." that appears in the command window.
    warning('off', 'MATLAB:xlswrite:AddSheet');
    % Get rid of warning about roipolyold being deprecated: 
    % "Warning: Function ROIPOLYOLD will be removed in the future. Use ROIPOLY instead"
    warning('off', 'images:removing:function');
    
    % Get rid of warning about wavread() being deprecated: 

    % "Warning: WAVREAD will be removed in a future release. Use AUDIOREAD instead."
    warning('off', 'MATLAB:audiovideo:wavread:functionToBeRemoved');
    
    % Get rid of warning about wavread() being deprecated: 
    % "Warning: figure JavaFrame property will be obsoleted in a future release. For more information see the JavaFrame resource on the MathWorks web site."
    warning('off', 'MATLAB:HandleGraphics:ObsoletedProperty:JavaFrame');
    
    % Turn off warning about variable names being modified if you use readtable() to read in column headers that have spaces in them.
    % "Warning: Variable names were modified to make them valid MATLAB identifiers."
    warning('off', 'MATLAB:table:ModifiedVarnames');
catch ME
    errorMessage = sprintf('Error in function %s() at line %d.\n\nError Message:\n%s', ...
      ME.stack(1).name, ME.stack(1).line, ME.message);
    fprintf(1, '%s\n', errorMessage);
    uiwait(warndlg(errorMessage));
  end
  return; % from TurnOffWarnings
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