% SIMPLEAPP Interactively explore plotting functions % Choose the function used to plot the sample data to see the % differences between surface plots, mesh plots, and waterfall plots % Create figure windowÄd. When specifying the output status, you must enclose input arguments that are character. Call the appropriate plotting function and specify the input axes as the axes to plot on. The function returns 1 if the figure or figures close and 0 otherwise. In the callback function, access the new drop-down value using the event argument and then use this value to determine how to update the plot data. Define changePlotType to accept src and event in addition to a third input argument that specifies the axes to plot on. The first argument contains the component that triggered the callback, and the second argument contains information about the user interaction. If the user clicks Cancel or the window close button (X), uigetfile returns 0. If the file exists and is valid, uigetfile returns the file name when the user clicks Open. It enables a user to select or enter the name of a file. These input arguments are often named src and event. file uigetfile opens a modal dialog box that lists files in the current folder. MATLAB automatically passes two input arguments to every callback function when the callback is triggered. In the simpleApp.m file, after the simpleApp function, define a callback function named changePlotType. In this example, program your app to update the plot when a user selects a new drop-down item. Write a callback function and assign it to an appropriate callback property to control the behavior of your app. Every UI component has multiple callback properties, each of which corresponds to a different user interaction. A callback function is a function that executes when the app user performs a specific interaction, such as selecting a drop-down item. Program your app to respond to user interactions by using callback functions. That will add a new callback function to your m-code.Dd.Items =
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