i want to connect different points on a 2d graph paper using matlab gui and want to show the result of total distance from a point to a different point what would be the possible way to do this in matlab gui

w

Answer 1

[BhaTTa]

@mohit kumar, you can implement it using MATLAB App Designer , below I have provided a complete implementation using MATLAB App Designer. This example allows users to select points on a plot and calculates the total distance between them.

Below is the screenshot of the Design View:

Code:

classdef app1 < matlab.apps.AppBase

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

    
    properties (Access = private)
        Points double = [] % Description
    end
    

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

        % Callback function: not associated with a component
        function ButtonPushed(app, event)
             app.AddButton.Text = 'Clicked!'; 
        end

        % Callback function: not associated with a component
        function AddButtonPushed(app, event)
            num1 = app.EditField.Value;
            num2 = app.EditField2.Value;
            
            % Calculate the sum
            result = num1 + num2;
            
            % Display the result in the label
            app.DistanceLabel.Text = ['Result: ', num2str(result)];
        end

        % Button pushed function: SelectPointsButton
        function SelectPointsButtonPushed(app, event)
             % Clear previous points
            app.Points = [];
            cla(app.UIAxes);
            
            % Allow user to select points
            hold(app.UIAxes, 'on');
            for i = 1:2 % Allow selection of 2 points
                [x, y] = ginput(1); % Get point from user click
                plot(app.UIAxes, x, y, 'ro', 'MarkerSize', 8, 'MarkerFaceColor', 'r');
                app.Points = [app.Points; x, y];
                
                % Draw lines between points
                if size(app.Points, 1) > 1
                    plot(app.UIAxes, app.Points(end-1:end, 1), app.Points(end-1:end, 2), 'b-');
                end
            end
            hold(app.UIAxes, 'off');
            
            % Calculate total distance
            totalDistance = sum(sqrt(sum(diff(app.Points).^2, 2)));
            app.DistanceLabel.Text = sprintf('Total Distance: %.2f', totalDistance);
        end
    end

    % Component initialization
    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 = [100 100 640 480];
            app.UIFigure.Name = 'MATLAB App';

            % Create UIAxes
            app.UIAxes = uiaxes(app.UIFigure);
            title(app.UIAxes, 'Title')
            xlabel(app.UIAxes, 'X')
            ylabel(app.UIAxes, 'Y')
            zlabel(app.UIAxes, 'Z')
            app.UIAxes.Position = [182 203 300 185];

            % Create SelectPointsButton
            app.SelectPointsButton = uibutton(app.UIFigure, 'push');
            app.SelectPointsButton.ButtonPushedFcn = createCallbackFcn(app, @SelectPointsButtonPushed, true);
            app.SelectPointsButton.Position = [394 162 100 22];
            app.SelectPointsButton.Text = 'SelectPoints';

            % Create DistanceLabel
            app.DistanceLabel = uilabel(app.UIFigure);
            app.DistanceLabel.Position = [234 103 289 22];
            app.DistanceLabel.Text = 'DistanceLabel';

            % 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 = app1

            % Create UIFigure and 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