MATLAB: Pick a time in app

app designerdatepickerMATLAB

Is it possible to pick a specific time of a specific day from an app?

The DatePicker component allows for selection of a specific date, but not a specific time at that date.

Best Answer

As apparently this feature has not been implemented in the app designer I decided on making an app of my own doing that exact thing.

The date and time string is stored in app.SelectedTime.Text e.g.

date_and_time = date_and_time = time_selector;
timestamp = datenum(date_and_time.SelectedTime.Text,'yyyy-mm-dd HH:MM:SS'); %While time_selector is open

The app is taking up to one input, which should be a uilabel from another app. In that case the output is assigned in the .Text for that label (e.g. in a pushbutton_callback with a corresponding label field)

function SelectStartTimeButtonPushed(app, event)
    waitfor(time_selector(app.StartTimeLabel)); %Label for SelectStartTimeButton is StartTimeLabel
end

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MATLAB: How to load an image file in APP DESIGNER

You need create uiaxes first and show the image on the axes.

First, add Axes component in Design View of App Designer. UIAxes will be added automatically.

 % Properties that correspond to app components
 properties (Access = public)
    UIFigure  matlab.ui.Figure
    UIAxes    matlab.ui.control.UIAxes
    % ...
 end

Next, uncheck Visible from INTERACTIVITY of app.UIAxes from Inspector pane.

Then, do imagesc or imshow by spcifying app.UIAxes.

% Button pushed function: OpenButton
        function OpenButtonPushed(app, event)
           [filename,filepath] = uigetfile({'*.*;*.jpg;*.png;*.bmp;*.oct'}, 'Select File to Open');
           fullname = [filepath, filename];
           ImageFile = imread(fullname);
           imagesc(app.UIAxes, ImageFile);
        end

MATLAB: Plotting in App designer

x = 1:10;
y = sin(x);
plot(app.UIAxes,x,y);

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MATLAB: How to load an image file in APP DESIGNER

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