I am getting an error "cannot convert double value to a handle".

Question

joshua thompson 2017-5-23

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/341620-i-am-getting-an-error-cannot-convert-double-value-to-a-handle

回答： Eric Delgado 2022-9-19

classdef MAIN < matlab.apps.AppBase
      % Properties that correspond to app components
      properties (Access = public)
          UIFigure                       matlab.ui.Figure
          PrincipleEditFieldLabel        matlab.ui.control.Label
          PrincipleAmount                matlab.ui.control.NumericEditField
          RateEditFieldLabel             matlab.ui.control.Label
          numInterestRate                matlab.ui.control.NumericEditField
          TimescompoundedEditFieldLabel  matlab.ui.control.Label
          PeriodYears                    matlab.ui.control.NumericEditField
          TimeyearsEditFieldLabel        matlab.ui.control.Label
          Timeyears                      matlab.ui.control.NumericEditField
          CalculateButton                matlab.ui.control.Button
          TotalEditFieldLabel            matlab.ui.control.Label
          TotalInvestment                matlab.ui.control.NumericEditField
      end
      methods (Access = private)
          % Code that executes after component creation
      end
      methods (Access = private)
          % Button pushed function: CalculateButton
          function CalculateButtonPushed(app, event)
              % Calculate the monthly payment
              Amount = app.PrincipleAmount.Value ;
              Rate = app.numInterestRate.Value;
              nper = app.PeriodYears.Value ;
              Time = app.Timeyears.Value;
              app.TotalInvestment = Amount*(1 + ((Rate*1/100)/nper))^(nper*Time)
          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';
              setAutoResize(app, app.UIFigure, true)
              % Create PrincipleEditFieldLabel
              app.PrincipleEditFieldLabel = uilabel(app.UIFigure);
              app.PrincipleEditFieldLabel.HorizontalAlignment = 'right';
              app.PrincipleEditFieldLabel.Position = [66 384 53 15];
              app.PrincipleEditFieldLabel.Text = 'Principle';
              % Create PrincipleAmount
              app.PrincipleAmount = uieditfield(app.UIFigure, 'numeric');
              app.PrincipleAmount.Position = [134 380 100 22];
              % Create RateEditFieldLabel
              app.RateEditFieldLabel = uilabel(app.UIFigure);
              app.RateEditFieldLabel.HorizontalAlignment = 'right';
              app.RateEditFieldLabel.Position = [88 347 31 15];
              app.RateEditFieldLabel.Text = 'Rate';
              % Create numInterestRate
              app.numInterestRate = uieditfield(app.UIFigure, 'numeric');
              app.numInterestRate.Position = [134 343 100 22];
              % Create TimescompoundedEditFieldLabel
              app.TimescompoundedEditFieldLabel = uilabel(app.UIFigure);
              app.TimescompoundedEditFieldLabel.HorizontalAlignment = 'right';
              app.TimescompoundedEditFieldLabel.Position = [6 308 113 15];
              app.TimescompoundedEditFieldLabel.Text = 'Times compounded';
              % Create PeriodYears
              app.PeriodYears = uieditfield(app.UIFigure, 'numeric');
              app.PeriodYears.Position = [134 304 100 22];
              % Create TimeyearsEditFieldLabel
              app.TimeyearsEditFieldLabel = uilabel(app.UIFigure);
              app.TimeyearsEditFieldLabel.HorizontalAlignment = 'right';
              app.TimeyearsEditFieldLabel.Position = [49 268 70 15];
              app.TimeyearsEditFieldLabel.Text = 'Time(years)';
              % Create Timeyears
              app.Timeyears = uieditfield(app.UIFigure, 'numeric');
              app.Timeyears.Position = [134 264 100 22];
              % Create CalculateButton
              app.CalculateButton = uibutton(app.UIFigure, 'push');
              app.CalculateButton.ButtonPushedFcn = createCallbackFcn(app, @CalculateButtonPushed, true);
              app.CalculateButton.Position = [19 162 100 22];
              app.CalculateButton.Text = 'Calculate';
              % Create TotalEditFieldLabel
              app.TotalEditFieldLabel = uilabel(app.UIFigure);
              app.TotalEditFieldLabel.HorizontalAlignment = 'right';
              app.TotalEditFieldLabel.Position = [135 166 35 15];
              app.TotalEditFieldLabel.Text = 'Total ';
              % Create TotalInvestment
              app.TotalInvestment = uieditfield(app.UIFigure, 'numeric');
              app.TotalInvestment.Position = [185 162 100 22];
          end
      end
      methods (Access = public)
          % Construct app
          function app = MAIN()
              % Create and configure components
              createComponents(app)
              % Register the app with App Designer
              registerApp(app, app.UIFigure)
              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