watermark on pdf report in deployed app will not work

Following code for the watermark will not work in deployed app, but works fine in matlab app designer:

import mlreportgen.dom.*

%--------------------------------------------------------------------------

CustomProjName = compose("%s",app.Customer_ProjectName);

rpt = Document(CustomProjName,"pdf");

open(rpt);

currentLayout = rpt.CurrentPageLayout;

currentLayout.PageSize.Height = "297mm";

currentLayout.PageSize.Width = "210mm";

currentLayout.PageSize.Orientation = "portrait";

currentLayout.PageMargins.Top = '0.0mm';

wm = mlreportgen.dom.Watermark('Hexagons_word_GP_v4.png');

wm.Width = '205mm';

wm.Height = [];

rpt.CurrentPageLayout.Watermark = wm;

Answer 1

[Venkat Siddarth Reddy]

Hi @Martin Jensen,

I understand that you are trying to add watermark to a report and generate it using MATLAB App designer. However, the above code is working in MATLAB App Designer, but not in the deployed/complied application.

From the code provided, I observed that the watermark image path given is just the file name.So please verify the following:

• Check the working directory when the app is deployed. The working directory might be different from the development environment. Therefore you may need to change the file location to the working directory or provide the full path to the water mark image
• Try adding try-catch block, this might help identifying the specific issue:

try
    % Add existing code here
    disp('Watermark added successfully');
    
catch ME
    % Display an error message
    disp('Error adding watermark:');
    disp(ME.message);
end

To know more about error handling in MATLAB, please refer to the following documentation:

• https://www.mathworks.com/help/matlab/ref/try.html

I hope this resolves the issue