MATLAB: How to print APP Window

app designerMATLABpdfprint

Hello everyone,

I am creating a App in the App Designer to allow me import data, plot it in figures, add text, information etc. and I would like to export everything (figures + text) in a PDF.

I would like to print my app window like I was able to do when I used GUI figure in a PDF document, when a "PDF Export" button is pushed.

This is how it was working on GUI:

function pushbutton_PDF_Callback(hObject, eventdata, handles)
orient(GUI_Screen,'landscape');
print(GUI_Screen,'-fillpage', '-dpdf', 'GUI_Screen.pdf')

It would be a bit like a screenshot of the window, but I can't figure out how to do it!

Does anyone have a clue about it ?

Thanks!

Best Answer

Hi,

“print” functionality is not supported by App Designer. Moreover, figures created programmatically using UIFigure do not support save, load and savefig functions.

Possible workaround in your case is to create a pushbutton and create local handle to the figure in the callback for pushbutton. Assign the individual values of figure generated using UIFigure to the local figure and use “saveas” to save the local figure in pdf format as shown below.

h=figure; 
a=app.UIAxes.XAxis.Parent.Children.XData; 
b=app.UIAxes.YAxis.Parent.Children.YData; 
plot(a,b); 
saveas(h,'savename','pdf') ;

For more details on unsupported functionality in App Designer refer the following link

https://www.mathworks.com/help/matlab/creating_guis/graphics-support-in-app-designer.html#bu4x860-1

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MATLAB: App Designer: How to use a camera in different Callbacks

Hi,

Folllowing is the code and app design

classdef app1 < matlab.apps.AppBase
    % Properties that correspond to app components
    properties (Access = public)
        UIFigure  matlab.ui.Figure
        UIAxes    matlab.ui.control.UIAxes
        UIAxes2   matlab.ui.control.UIAxes
        Button    matlab.ui.control.Button
    end
    
    properties (Access = public)
        cam;
    end
    
    % Callbacks that handle component events
    methods (Access = private)
        % Code that executes after component creation
        function startupFcn(app)
            app.UIAxes2.Visible = 'off';
            evalin("base", 'clear cam');
            app.cam = webcam;
            frame = snapshot(app.cam);
            im = image(app.UIAxes, zeros(size(frame), 'uint8'));
            axis(app.UIAxes, 'image');
            preview(app.cam, im);
        end
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        function ButtonPushed(app, event)
            img = snapshot(app.cam);
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        end
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    methods (Access = private)
        % Create UIFigure and components

        function createComponents(app)
            % Create UIFigure and hide until all components are created
            app.UIFigure = uifigure('Visible', 'off');
            app.UIFigure.Position = [100 100 640 480];
            app.UIFigure.Name = 'UI Figure';
            % Create UIAxes
            app.UIAxes = uiaxes(app.UIFigure);
            title(app.UIAxes, 'Title')
            xlabel(app.UIAxes, 'X')
            ylabel(app.UIAxes, 'Y')
            app.UIAxes.Position = [26 270 300 185];
            % Create UIAxes2
            app.UIAxes2 = uiaxes(app.UIFigure);
            title(app.UIAxes2, 'Title')
            xlabel(app.UIAxes2, 'X')
            ylabel(app.UIAxes2, 'Y')
            app.UIAxes2.Position = [25 43 300 185];
            % Create Button
            app.Button = uibutton(app.UIFigure, 'push');
            app.Button.ButtonPushedFcn = createCallbackFcn(app, @ButtonPushed, true);
            app.Button.Position = [447 249 100 22];
            % Show the figure after all components are created
            app.UIFigure.Visible = 'on';
        end
    end
    % App creation and deletion
    methods (Access = public)
        % Construct app
        function app = app1
            % Create UIFigure and components
            createComponents(app)
            % Register the app with App Designer
            registerApp(app, app.UIFigure)
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            runStartupFcn(app, @startupFcn)
            if nargout == 0
                clear app
            end
        end
        % Code that executes before app deletion
        function delete(app)
            % Delete UIFigure when app is deleted
            delete(app.UIFigure)
        end
    end
end

Error you are facing instantiates that the code is not able to access the camera object at that instant.

Hope it helps!!

MATLAB: How to open app2 within app1? (app designer or guide)

Hi Allison, The following example should get you started. Multi-Window App in App Designer

Best Answer

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MATLAB: App Designer: How to use a camera in different Callbacks

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