使用matlab app designer做个加减法计算器，

好的，我可以为您编写一个MATLAB App Designer加减法计算器。请按照以下步骤操作：

1. 打开MATLAB App Designer并创建一个新的App。

2. 添加两个Edit Field，用于输入两个数字（num1和num2）。

3. 添加两个Radio Button，用于选择加法或减法运算。

4. 添加一个Push Button，用于计算并显示结果。

5. 在Push Button的回调函数中，获取num1和num2的值，并根据选中的Radio Button执行相应的计算操作。

6. 将结果显示在一个Text Field中。

以下是一个示例代码，可以参考：

classdef CalculatorApp < matlab.apps.AppBase

    % Properties that correspond to app components
    properties (Access = public)
        UIFigure      matlab.ui.Figure
        Num1EditField matlab.ui.control.NumericEditField
        Num2EditField matlab.ui.control.NumericEditField
        AddRadioButton matlab.ui.control.RadioButton
        SubtractRadioButton matlab.ui.control.RadioButton
        CalculateButton matlab.ui.control.Button
        ResultTextField matlab.ui.control.EditField
    end

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

        % Button pushed function: CalculateButton
        function CalculateButtonPushed(app, event)
            num1 = app.Num1EditField.Value;
            num2 = app.Num2EditField.Value;

            if app.AddRadioButton.Value
                result = num1 + num2;
            else
                result = num1 - num2;
            end

            app.ResultTextField.Value = result;
        end
    end

    % App initialization and construction
    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 = [100 100 320 200];
            app.UIFigure.Name = 'Calculator';

            % Create Num1EditField
            app.Num1EditField = uieditfield(app.UIFigure, 'numeric');
            app.Num1EditField.Position = [27 148 100 22];

            % Create Num2EditField
            app.Num2EditField = uieditfield(app.UIFigure, 'numeric');
            app.Num2EditField.Position = [163 148 100 22];

            % Create AddRadioButton
            app.AddRadioButton = uiradiobutton(app.UIFigure);
            app.AddRadioButton.Text = 'Add';
            app.AddRadioButton.Position = [27 111 44 22];
            app.AddRadioButton.Value = true;

            % Create SubtractRadioButton
            app.SubtractRadioButton = uiradiobutton(app.UIFigure);
            app.SubtractRadioButton.Text = 'Subtract';
            app.SubtractRadioButton.Position = [27 79 74 22];

            % Create CalculateButton
            app.CalculateButton = uibutton(app.UIFigure, 'push');
            app.CalculateButton.ButtonPushedFcn = createCallbackFcn(app, @CalculateButtonPushed, true);
            app.CalculateButton.Position = [163 85 100 22];
            app.CalculateButton.Text = 'Calculate';

            % Create ResultTextField
            app.ResultTextField = uieditfield(app.UIFigure, 'text');
            app.ResultTextField.Position = [27 38 236 22];
            app.ResultTextField.Value = 'Result';

            % 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 = CalculatorApp

            % 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

将此代码复制到MATLAB App Designer中即可创建一个简单的加减法计算器。