Display output from neural network on APP Designer

I have build a neural network model and saved it to load in APP Designer as shown in figure.

The code is showing no error. But also, it doesn't display the output as required. I have singularly checked each code line's execution in live script and all is working fine. The saved model (MSB.mat) is also being loaded and working fine.

What could be the possibility of no output?

Kindly help!

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

        % Button pushed function: CheckforsuitablematrixButton
        function CheckforsuitablematrixButtonPushed(app, event)
        
%        Input variables from the user (Process,Country,FTr,FWf,FAR,TS,TM,FS,FM)

            Process=[app.ManufacturingProcessDropDown.Value]
            Country=[app.GeographicalLocationDropDown.Value]
            FWf=[app.FiberWeightFractionEditField.Value]
            FAR=[app.FiberAspectRatioEditField.Value]
            TS=[app.TensileStrengthMPaEditField.Value]
            TM=[app.TensileModulusGPaEditField.Value]
            FS=[app.FlexuralStrengthMPaEditField.Value]
            FM=[app.FlexuralModulusGPaEditField.Value]
            if strcmp(app.FiberTreatmentDropDown.Value,'Untreated')
                FTr=[0];
            else
                FTr=[1];
            end

%        Aggregating input variables into a table named IP
            IP=table(Process,Country,FTr,FWf,FAR,TS,TM,FS,FM)

%        Loading the trained neural network
            load MSB.mat

%        Predicting the output from the input
            Pred_M=predict(MSB,IP)

%        Displaying the output 
            app.UsethegivenMatrixEditField.Value=Pred_M
        end
    end

Answer 1

[VBBV]

%Loading the trained neural network
          mdl = load('MSB.mat')
%        Predicting the output from the input
  Pred_M=predict(mdl,IP.Process)

Check the syntax for using the predict function

[Aditi Mahajan]

Thanks for your answer.

The code written is right. Its giving output in live script (in figure).

[VBBV]

Ok, Since Pred_M seems a categorical variable , use string(Pred_M) to display the output, and also see the following changes to display table data. Hope this helps

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

        % Button pushed function: CheckforsuitablematrixButton
        function CheckforsuitablematrixButtonPushed(app, event)
        
%        Input variables from the user (Process,Country,FTr,FWf,FAR,TS,TM,FS,FM)

            Process=[app.ManufacturingProcessDropDown.Value]
            Country=[app.GeographicalLocationDropDown.Value]
            FWf=[app.FiberWeightFractionEditField.Value]
            FAR=[app.FiberAspectRatioEditField.Value]
            TS=[app.TensileStrengthMPaEditField.Value]
            TM=[app.TensileModulusGPaEditField.Value]
            FS=[app.FlexuralStrengthMPaEditField.Value]
            FM=[app.FlexuralModulusGPaEditField.Value]
            if strcmp(app.FiberTreatmentDropDown.Value,'Untreated')
                FTr=[0];
            else
                FTr=[1];
            end
         
            % use a UIFigure and UItable to display data in Apps
           fig = uifigure            
    %        Aggregating input variables into a table named IP
            IP=table(Process,Country,FTr,FWf,FAR,TS,TM,FS,FM,'VariableNames',{'Process','Country','FTr','FWf','FAR','TS','TM','FS','FM'});
            UIT = uitable(fig,'Data',IP)

%        Loading the trained neural network
            load MSB.mat

%        Predicting the output from the input
            Pred_M=predict(MSB,IP)

%        Displaying the output------------------>>> use a string to display
            app.UsethegivenMatrixEditField.Value  =  string(Pred_M)
        end
    end

[Aditi Mahajan]

The output for the provided code is shown in figure. (uifigure displays the empty figure on pushing the push button)

There is problem with the code lines that are in comments in the following figure as the display of string is working fine.

[VBBV]

fig = app.UIFigure            
  %        Aggregating input variables in
IP=table(Process,Country,FTr,FWf,FAR,TS,TM,FS,FM,'VariableNames',{'Process','Country','FTr','FWf','FAR','TS','TM','FS','FM'});
UIT = uitable(fig,'Data',IP)

Use the app.UIFigure instead shown in lines as above

[VBBV]

You also need to assign the values to variables in the table as shown below and display using UIFigure in the App

% capture event by user input
Process = event.ManufacturingProcessDropDown.Value;
% assign the value to variable 
app.ManufacturingProcessDropDown.Value = Process;

Country = event.GeographicalLocationDropDown.Value
app.GeographicalLocationDropDown.Value = Country;

FWf = event.FiberWeightFractionEditField.Value
app.FiberWeightFractionEditField.Value = Fwf

FAR = event.FiberAspectRatioEditField.Value
app.FiberAspectRatioEditField.Value = FAR

TS = event.TensileStrengthMPaEditField.Value
app.TensileStrengthMPaEditField.Value = TS

TM = event.TensileModulusGPaEditField.Value
app.TensileModulusGPaEditField.Value = TM

FS = event.FlexuralStrengthMPaEditField.Value
app.FlexuralStrengthMPaEditField.Value = FS

FM = event.FlexuralModulusGPaEditField.Value
app.FlexuralModulusGPaEditField.Value = FM

if strcmp(app.FiberTreatmentDropDown.Value,'Untreated')
    FTr=[0];
else
    FTr=[1];
end
         
% use a UIFigure and UItable to display data in Apps
fig = app.UIFigure            
%        Aggregating input variables into a table named IP
IP=table(Process,Country,FTr,FWf,FAR,TS,TM,FS,FM,'VariableNames',{'Process','Country','FTr','FWf','FAR','TS','TM','FS','FM'});
UIT = uitable(fig,'Data',IP)

[Aditi Mahajan]

This is still not working. The code is showing error on the use of

Process=event.ManufacturingProcessDropDown.Value;

Also, there is no output to be displayed in figure.

[VBBV]

Can you check now with these following changes

% capture event by user input
Process = event.Value;
% assign the value to variable 
app.ManufacturingProcessDropDown.Value = Process;

Country = event.Value
app.GeographicalLocationDropDown.Value = Country;

FWf = event.Value
app.FiberWeightFractionEditField.Value = Fwf

FAR = event.Value
app.FiberAspectRatioEditField.Value = FAR

TS = event.Value
app.TensileStrengthMPaEditField.Value = TS

TM = event.Value
app.TensileModulusGPaEditField.Value = TM

FS = event.Value
app.FlexuralStrengthMPaEditField.Value = FS

FM = event.Value
app.FlexuralModulusGPaEditField.Value = FM

if strcmp(app.FiberTreatmentDropDown.Value,'Untreated')
    FTr=[0];
else
    FTr=[1];
end
         
% use a UIFigure and UItable to display data in Apps
fig = app.UIFigure            
%        Aggregating input variables into a table named IP
IP=table(Process,Country,FTr,FWf,FAR,TS,TM,FS,FM,'VariableNames',{'Process','Country','FTr','FWf','FAR','TS','TM','FS','FM'});
UIT = uitable(fig,'Data',IP)

[Aditi Mahajan]

Still not working

[VBBV]

Ok. The ValueChangingFcn callback property needs to be added to all Editboxes GUI component in your App. Then it will work.

[Aditi Mahajan]

I tried. Still not working.

[VBBV]

ok, do you still get error ? can you share the code ?

[Aditi Mahajan]

  
    properties (Access = private)
        Process
        Country
        FTr
        FWf
        FAR
        TS
        TM
        FS
        FM
        IP % Description
    end


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

        % Value changed function: ManufacturingProcessDropDown
        function ManufacturingProcessDropDownValueChanged(app, event)
            app.Process=string(app.ManufacturingProcessDropDown.Value);
        end

        % Value changed function: FiberWeightFractionEditField
        function FiberWeightFractionEditFieldValueChanged(app, event)
            value=app.FiberWeightFractionEditField.Value;
%        Normalizing
            app.FWf=(value-5)/45;
        end

        % Value changed function: FiberAspectRatioEditField
        function FiberAspectRatioEditFieldValueChanged(app, event)
            value=app.FiberAspectRatioEditField.Value;
%        Normalizing
            app.FAR=(value-3.15)/996.85;
        end

        % Value changed function: FiberTreatmentDropDown
        function FiberTreatmentDropDownValueChanged(app, event)
            if strcmp(app.FiberTreatmentDropDown.Value,'Untreated')
                app.FTr=0;
            else
                app.FTr=1;
            end
        end

        % Value changed function: GeographicalLocationDropDown
        function GeographicalLocationDropDownValueChanged(app, event)
            app.Country=app.GeographicalLocationDropDown.Value;
        end

        % Value changed function: TensileStrengthMPaEditField
        function TensileStrengthMPaEditFieldValueChanged(app, event)
            value=app.TensileStrengthMPaEditField.Value;
%        Normalizing
            app.TS=(value-1.62)/49.753;
        end

        % Value changed function: FlexuralStrengthMPaEditField
        function FlexuralStrengthMPaEditFieldValueChanged(app, event)
            value=app.FlexuralStrengthMPaEditField.Value;
%        Normalizing
            app.FS=(value-2.06)/104.34;
        end

        % Value changed function: TensileModulusGPaEditField
        function TensileModulusGPaEditFieldValueChanged(app, event)
            value=app.TensileModulusGPaEditField.Value;
%        Normalizing
            app.TM=(value-0.0834)/4.0006;
        end

        % Value changed function: FlexuralModulusGPaEditField
        function FlexuralModulusGPaEditFieldValueChanged(app, event)
            value=app.FlexuralModulusGPaEditField.Value;
%        Normalizing
            app.FM=(value-0.187)/4.913
        end

        % Button pushed function: CheckforsuitablematrixButton
        function CheckforsuitablematrixButtonPushed(app, event)
            %        Loading classification neural network
            net=load('MSB.mat');

%        Aggregating input variables into a table named IP
            app.IP=table('Size',[1 9], ...
                'VariableTypes',{'categorical','categorical','double','double','double','double','double','double','double'}, ...
                'VariableNames',net.MSB.PredictorNames);
            app.IP.Process(1)=categorical(app.Process);
            app.IP.Country(1)=categorical(app.Country);
            app.IP.FTr(1)=app.FTr;
            app.IP.FWf(1)=app.FWf;
            app.IP.FAR(1)=app.FAR;
            app.IP.TS(1)=app.TS;
            app.IP.TM(1)=app.TM;
            app.IP.FS(1)=app.FS;
            app.IP.FM(1)=app.FM;

%        Predicting the output from the input
            Pred_M=predict(net.MSB,app.IP);

%        Displaying the output 
            app.UsethegivenMatrixEditField.Value=char(Pred_M);