MATLAB app designer里用单选按钮组绘制三幅不同图像的代码，使用plot命令进行绘制

以下是一个例子，展示如何使用单选按钮组在MATLAB App Designer中绘制三幅不同的图像：

1. 在App Designer中创建一个新的Blank App
2. 在Design View中添加一个Axes组件和一个Button Group组件
3. 在Axes中绘制一个默认的图像（例如，使用plot命令绘制一个sin函数）
4. 在Button Group中添加三个单选按钮，并设置它们的String属性为“Plot 1”，“Plot 2”和“Plot 3”
5. 在Button Group中添加一个SelectionChangedFcn回调函数，用于检测单选按钮的更改，并在Axes中绘制相应的图像

以下是示例代码：

classdef app1 < matlab.apps.AppBase

    % Properties that correspond to app components
    properties (Access = public)
        UIFigure      matlab.ui.Figure
        Axes          matlab.ui.control.UIAxes
        ButtonGroup   matlab.ui.container.ButtonGroup
        Plot1Button   matlab.ui.control.RadioButton
        Plot2Button   matlab.ui.control.RadioButton
        Plot3Button   matlab.ui.control.RadioButton
    end

    % Callbacks that handle component events
    methods (Access = private)

        % Button group selection changed function
        function ButtonGroupSelectionChanged(app, event)
            selectedButton = app.ButtonGroup.SelectedObject;
            if selectedButton == app.Plot1Button
                % Plot the first graph
                x = linspace(0, 2*pi);
                y = sin(x);
                plot(app.Axes, x, y);
            elseif selectedButton == app.Plot2Button
                % Plot the second graph
                x = linspace(-5, 5);
                y = x.^2;
                plot(app.Axes, x, y);
            elseif selectedButton == app.Plot3Button
                % Plot the third graph
                x = -5:0.1:5;
                y = exp(-x.^2);
                plot(app.Axes, x, y);
            end
        end
    end

    % App initialization and construction
    methods (Access = private)

        % Create UIFigure and components
        function createComponents(app)

            % Create UIFigure
            app.UIFigure = uifigure;
            app.UIFigure.Position = [100 100 640 480];
            app.UIFigure.Name = 'UI Figure';
            app.UIFigure.Resize = 'off';

            % Create Axes
            app.Axes = uiaxes(app.UIFigure);
            title(app.Axes, 'Plot 1');
            xlabel(app.Axes, 'X');
            ylabel(app.Axes, 'Y');
            app.Axes.Position = [150 100 300 300];

            % Create ButtonGroup
            app.ButtonGroup = uibuttongroup(app.UIFigure);
            app.ButtonGroup.SelectionChangedFcn = createCallbackFcn(app, @ButtonGroupSelectionChanged, true);
            app.ButtonGroup.Title = 'Select Plot';
            app.ButtonGroup.Position = [50 100 70 127];

            % Create Plot1Button
            app.Plot1Button = uiradiobutton(app.ButtonGroup);
            app.Plot1Button.Text = 'Plot 1';
            app.Plot1Button.Position = [11 87 56 22];
            app.Plot1Button.Value = true;

            % Create Plot2Button
            app.Plot2Button = uiradiobutton(app.ButtonGroup);
            app.Plot2Button.Text = 'Plot 2';
            app.Plot2Button.Position = [11 64 56 22];

            % Create Plot3Button
            app.Plot3Button = uiradiobutton(app.ButtonGroup);
            app.Plot3Button.Text = 'Plot 3';
            app.Plot3Button.Position = [11 41 56 22];
        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)

            % Execute the startup function
            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

在这里，我们创建了一个名为app1的类，并在其中定义了三个单选按钮和一个Axes。在单选按钮的SelectionChangedFcn回调函数中，我们使用plot命令绘制相应的图形。示例代码中绘制的三幅图像分别为sin函数、二次函数和高斯函数。

将此代码复制并运行，您应该能够在应用程序中选择三个不同的图像，并在Axes中绘制它们。