How to Plot Membership Function inside App Designer Axes?

So I made a simple fuzzy blower speed controller with room temperature input using App Designer, what I want is to plot the membership function (plotmf) 'input' and 'output' into app.UIAxes and app.UIAxes2, but what happens instead is matlab plotting to figure 1, the code is as follows

classdef app3 < matlab.apps.AppBase

% Properties that correspond to app components

properties (Access = public)

UIFigure matlab.ui.Figure

UIAxes matlab.ui.control.UIAxes

CalculateLabel matlab.ui.control.Label

Enter matlab.ui.control.Switch

TemperatureLabel matlab.ui.control.Label

TemperatureEditField matlab.ui.control.NumericEditField

SpeedLabel matlab.ui.control.Label

SpeedEditField matlab.ui.control.NumericEditField

UIAxes2 matlab.ui.control.UIAxes

end

% Callbacks that handle component events

methods (Access = private)

% Code that executes after component creation

function startupFcn(app)

end

% Value changed function: Enter

function EnterValueChanged(app, event)

a=newfis('controller')

a=addvar(a,'input','temp',[0 30])

a=addmf(a,'input',1,'cold','trimf',[0 0 10]);

a=addmf(a,'input',1,'cool','trimf',[0 12.5 17.5]);

a=addmf(a,'input',1,'pleasent','trimf',[15 17.5 20]);

a=addmf(a,'input',1,'warm','trimf',[17.5 22.5 27.5]);

a=addmf(a,'input',1,'hot','trimf',[25 30 30]);

a=addvar(a,'output','speed',[0 100]);

a=addmf(a,'output',1,'minimal','trimf',[0 0 30]);

a=addmf(a,'output',1,'slow','trimf',[10 30 50]);

a=addmf(a,'output',1,'medium','trimf',[40 50 60]);

a=addmf(a,'output',1,'fast','trimf',[50 70 90]);

a=addmf(a,'output',1,'blast','trimf',[70 100 100]);

ruleList=[ ...

1 1 1 1

2 2 1 1

3 3 1 1

4 4 1 1

5 5 1 1];

a=addrule(a,ruleList);

x = app.TemperatureEditField.Value;

y= evalfis([x], a);

% the problem

axes(app.UIAxes)

plotmf(a,'input',1)

hold on

plot(app.UIAxes,x,0.2,'o');

plot(app.UIAxes,x,0.5,'o');

plot(app.UIAxes,x,0.8,'o');

hold off

%the problem

axes(app.UIAxes2);

plotmf(a,'output',1)

hold on

plot(app.UIAxes2,y,0.2,'o');

plot(app.UIAxes2,y,0.5,'o');

plot(app.UIAxes2,y,0.8,'o');

hold off

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, 'Temperature')

xlabel(app.UIAxes, 'Temp')

ylabel(app.UIAxes, 'Degree of Membership')

app.UIAxes.Position = [1 296 308 185];

% Create CalculateLabel

app.CalculateLabel = uilabel(app.UIFigure);

app.CalculateLabel.HorizontalAlignment = 'center';

app.CalculateLabel.Position = [175.5 91 56 22];

app.CalculateLabel.Text = 'Calculate';

% Create Enter

app.Enter = uiswitch(app.UIFigure, 'slider');

app.Enter.ValueChangedFcn = createCallbackFcn(app, @EnterValueChanged, true);

app.Enter.Position = [180 128 45 20];

% Create TemperatureLabel

app.TemperatureLabel = uilabel(app.UIFigure);

app.TemperatureLabel.HorizontalAlignment = 'right';

app.TemperatureLabel.Position = [59 230 73 22];

app.TemperatureLabel.Text = 'Temperature';

% Create TemperatureEditField

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

app.TemperatureEditField.Position = [147 230 100 22];

% Create SpeedLabel

app.SpeedLabel = uilabel(app.UIFigure);

app.SpeedLabel.HorizontalAlignment = 'right';

app.SpeedLabel.Position = [92 183 40 22];

app.SpeedLabel.Text = 'Speed';

% Create SpeedEditField

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

app.SpeedEditField.Position = [147 183 100 22];

% Create UIAxes2

app.UIAxes2 = uiaxes(app.UIFigure);

title(app.UIAxes2, 'Speed')

xlabel(app.UIAxes2, 'Speed')

ylabel(app.UIAxes2, 'Degree of Membership')

app.UIAxes2.Position = [333 296 308 185];

% 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 = app3

% 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

Answer 1

[TED MOSBY]

Hi,

The function "plotmf" always draws into the current figure that belongs to MATLAB’s traditional graphics system.

axes(app.UIAxes)
plotmf(fis,'input',1)   % still opens Figure 1

The workaround is to let "plotmf" give you the raw data and then plot that data yourself on the axes that belong to the app:

[xOut,mfOut] = plotmf(fis,variableType,variableIndex);

Here is how you can fix your problem and apply it at the required places in your code:

[xin, mfin] = plotmf(fis,'input',1);    % get data, no plotting                
plot(app.UIAxes,xin,mfin,'LineWidth',1.2)
hold(app.UIAxes,'on')
plot(app.UIAxes,[T T],[0 1],'--r','LineWidth',1)     
hold(app.UIAxes,'off')

Here's more information on "plotmf" :

https://www.mathworks.com/help/fuzzy/plotmf.html?s_tid=srchtitle_support_results_1_plotmf

Hope this helps!