How to Set The Max Value of GUI slider to a Calculated Value

How do I set the Max value of a slider to a calculated value using the GUI builder in Matlab.

I am trying to get the slider to equal Df which is the max distance travelled.

classdef Major1 < matlab.apps.AppBase

% Properties that correspond to app components

properties (Access = public)

UIFigure matlab.ui.Figure

Button matlab.ui.control.Button

Slider matlab.ui.control.Slider

SliderLabel matlab.ui.control.Label

AngleofTrigectoryEditField matlab.ui.control.NumericEditField

AngleofTrigectoryEditFieldLabel matlab.ui.control.Label

IntialVelocityEditField matlab.ui.control.NumericEditField

IntialVelocityEditFieldLabel matlab.ui.control.Label

HeightEditField matlab.ui.control.NumericEditField

HeightEditFieldLabel matlab.ui.control.Label

UIAxes matlab.ui.control.UIAxes

end

% Callbacks that handle component events

methods (Access = private)

% Button pushed function: Button

function Calc(app, event)

H=app.HeightEditField.Value;

U=app.IntialVelocityEditField.Value;

theta=app.AngleofTrigectoryEditField.Value;

Uy=U*sind(theta)

Tf=(-Uy-sqrt(Uy^2-4*(1/2)*-9.81*H))/(-9.81)

t = linspace(Tf,0,50);

y=(1/2)*-9.81*t.^2+Uy*t+H

x=(U*cosd(theta))*t

plot (app.UIAxes,x,y)

end

% Value changing function: Slider

function SliderValueChanging(app, event)

D = event.Value;

H=app.HeightEditField.Value;

U=app.IntialVelocityEditField.Value;

theta=app.AngleofTrigectoryEditField.Value;

Uy=sind(theta)*U;

Tf=(-Uy-sqrt(Uy^2-4*(1/2)*-9.81*H))/(-9.81);

Df=(U*cosd(theta))*Tf;

Ts=D/(U*cosd(theta))

Hy=(1/2)*-9.81*Ts.^2+Uy*Ts+H;

plot(app.UIAxes,D,Hy,'*','MarkerEdgeColor',"r",'MarkerSize',12)

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 = [100 100 868 734];

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.ColorOrder = [0 0.447058823529412 0.741176470588235];

app.UIAxes.LineStyleOrder = {'--'};

app.UIAxes.NextPlot = 'add';

app.UIAxes.Position = [105 122 640 355];

% Create HeightEditFieldLabel

app.HeightEditFieldLabel = uilabel(app.UIFigure);

app.HeightEditFieldLabel.HorizontalAlignment = 'right';

app.HeightEditFieldLabel.Position = [150 698 40 22];

app.HeightEditFieldLabel.Text = 'Height';

% Create HeightEditField

app.HeightEditField = uieditfield(app.UIFigure, 'numeric');

app.HeightEditField.Position = [205 698 100 22];

% Create IntialVelocityEditFieldLabel

app.IntialVelocityEditFieldLabel = uilabel(app.UIFigure);

app.IntialVelocityEditFieldLabel.HorizontalAlignment = 'right';

app.IntialVelocityEditFieldLabel.Position = [115 662 75 22];

app.IntialVelocityEditFieldLabel.Text = 'Intial Velocity';

% Create IntialVelocityEditField

app.IntialVelocityEditField = uieditfield(app.UIFigure, 'numeric');

app.IntialVelocityEditField.Position = [205 662 100 22];

% Create AngleofTrigectoryEditFieldLabel

app.AngleofTrigectoryEditFieldLabel = uilabel(app.UIFigure);

app.AngleofTrigectoryEditFieldLabel.HorizontalAlignment = 'right';

app.AngleofTrigectoryEditFieldLabel.Position = [85 624 105 22];

app.AngleofTrigectoryEditFieldLabel.Text = 'Angle of Trigectory';

% Create AngleofTrigectoryEditField

app.AngleofTrigectoryEditField = uieditfield(app.UIFigure, 'numeric');

app.AngleofTrigectoryEditField.Position = [205 624 100 22];

% Create SliderLabel

app.SliderLabel = uilabel(app.UIFigure);

app.SliderLabel.HorizontalAlignment = 'right';

app.SliderLabel.Position = [85 101 36 22];

app.SliderLabel.Text = 'Slider';

% Create Slider

app.Slider = uislider(app.UIFigure);

app.Slider.ValueChangingFcn = createCallbackFcn(app, @SliderValueChanging, true);

app.Slider.Position = [142 110 603 3];

% Create Button

app.Button = uibutton(app.UIFigure, 'push');

app.Button.ButtonPushedFcn = createCallbackFcn(app, @Calc, true);

app.Button.Position = [205 582 100 23];

% 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 = Major1

% 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

Answer 1

[Antoni Garcia-Herreros]

Try adding this line of code when you are defining the Slider

app.Slider.Limits=[0 Df];

[Steven]

Thank you this worked.