implementation loop load into app designer

Hi, girls and guys,

I have a question how can I implement this type of code into appdesigner can any one help me? There is loop where I need o load variables. Appdesigner is quite new for me and I need to see how its works.

I need to print that "f" on botton into table samehow

Thank you in advance for your help. Im just a student I want to learn.

this is my code :

classdef app3 < matlab.apps.AppBase

    % Properties that correspond to app components
    properties (Access = public)
        UIFigure                        matlab.ui.Figure
        UITable                         matlab.ui.control.Table
        vypocetButton                   matlab.ui.control.StateButton
        ZadajpociatocnehodnotyvektoraxEditField  matlab.ui.control.NumericEditField
        ZadajpociatocnehodnotyvektoraxEditFieldLabel  matlab.ui.control.Label
        ZadajnelinearnerovniceEditField  matlab.ui.control.EditField
        ZadajnelinearnerovniceEditFieldLabel  matlab.ui.control.Label
        ZadajpresnostrieseniaEditField  matlab.ui.control.NumericEditField
        ZadajpresnostrieseniaEditFieldLabel  matlab.ui.control.Label
        ZadajpocetnelinearnychrovnicEditField  matlab.ui.control.NumericEditField
        ZadajpocetnelinearnychrovnicEditFieldLabel  matlab.ui.control.Label
    end

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

        % Value changed function: vypocetButton
        function vypocetButtonValueChanged(app, event)
            function in=data()
           in.n = app.ZadajpocetnelinearnychrovnicEditField.Value;
           in.eps = app.ZadajpresnostrieseniaEditField.Value;
           in.f(i) = app.ZadajnelinearnerovniceEditField.Value;
           in.x(i) = app.ZadajpociatocnehodnotyvektoraxEditField.Value;
            end

           function [x1]=newton(in)

X=symvar(in.f);   
% Finding symbolic variables in the system f
n=length(X);    % Finding the number of variables in the vector x
x1=zeros(1,n);   % Defining auxiliary vector x (k + 1)


x0=in.x; %vektor x(k)

J=jacobian(in.f,X); % Determination of Jacobi matrix components J (x)

podmienka=true; % Set that -f (x (k))) / J (x (k))> e

while podmienka
    f=double(subs(in.f,X,x0)); % f(x(k))

    J=double(subs(J,X,x0)); % J(x(k))

    %calculate of  f(x(k)))/J(x(k))
    prirastok=(inv(J)*f')'; % The result is the increment vector dx1, dx2, ..., dxn
    x1=x0-prirastok; % Calculation of vector values x (k + 1) according to (3.13)

    eps_p=max(abs(-prirastok));
    x0=x1; % Assignment x (k) = x (k + 1)

    podmienka=eps_p>in.eps; %Test, if   -f(x(k)))/J(x(k))>e
end
end

in = data();       % Loading input data
for k=1:length(in) %print output 
    in(k)
end   

in.x_1=newton(in); %call Newton


X=symvar(in.f); % Finding symbolic variables in the system f



x=solve(in.f, 'Real',true); % Matlab function call solve

p=length(x.(['x',num2str(1)])) %Determine the number of stationary points for x_1

for i=1:in.n 
    for h=1:p
        x_out(i,h)=x.(['x',num2str(i)])(h);
    end
end



for h=1:p % Substitution of stationary points x_h into the system f

    
for i=1:in.n 
% Acquisition of stationary point values x_h
     in.x(i)=double(x_out(i,h));
end
for i=1:in.n
    
   fprintf('f(%d)=%g\n', i,double(subs(in.f(i),X,in.x))); % Only this is important to print somehow
  
end
end

            
        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 ZadajpocetnelinearnychrovnicEditFieldLabel
            app.ZadajpocetnelinearnychrovnicEditFieldLabel = uilabel(app.UIFigure);
            app.ZadajpocetnelinearnychrovnicEditFieldLabel.HorizontalAlignment = 'right';
            app.ZadajpocetnelinearnychrovnicEditFieldLabel.Position = [34 406 178 22];
            app.ZadajpocetnelinearnychrovnicEditFieldLabel.Text = 'Zadaj pocet nelinearnych rovnic:';

            % Create ZadajpocetnelinearnychrovnicEditField
            app.ZadajpocetnelinearnychrovnicEditField = uieditfield(app.UIFigure, 'numeric');
            app.ZadajpocetnelinearnychrovnicEditField.Position = [227 406 100 22];

            % Create ZadajpresnostrieseniaEditFieldLabel
            app.ZadajpresnostrieseniaEditFieldLabel = uilabel(app.UIFigure);
            app.ZadajpresnostrieseniaEditFieldLabel.HorizontalAlignment = 'right';
            app.ZadajpresnostrieseniaEditFieldLabel.Position = [79 363 133 22];
            app.ZadajpresnostrieseniaEditFieldLabel.Text = 'Zadaj presnost riesenia:';

            % Create ZadajpresnostrieseniaEditField
            app.ZadajpresnostrieseniaEditField = uieditfield(app.UIFigure, 'numeric');
            app.ZadajpresnostrieseniaEditField.Position = [227 363 100 22];

            % Create ZadajnelinearnerovniceEditFieldLabel
            app.ZadajnelinearnerovniceEditFieldLabel = uilabel(app.UIFigure);
            app.ZadajnelinearnerovniceEditFieldLabel.HorizontalAlignment = 'right';
            app.ZadajnelinearnerovniceEditFieldLabel.Position = [72 315 140 22];
            app.ZadajnelinearnerovniceEditFieldLabel.Text = 'Zadaj nelinearne rovnice:';

            % Create ZadajnelinearnerovniceEditField
            app.ZadajnelinearnerovniceEditField = uieditfield(app.UIFigure, 'text');
            app.ZadajnelinearnerovniceEditField.Position = [227 315 100 22];

            % Create ZadajpociatocnehodnotyvektoraxEditFieldLabel
            app.ZadajpociatocnehodnotyvektoraxEditFieldLabel = uilabel(app.UIFigure);
            app.ZadajpociatocnehodnotyvektoraxEditFieldLabel.HorizontalAlignment = 'right';
            app.ZadajpociatocnehodnotyvektoraxEditFieldLabel.Position = [13 263 199 22];
            app.ZadajpociatocnehodnotyvektoraxEditFieldLabel.Text = 'Zadaj pociatocne hodnoty vektora x:';

            % Create ZadajpociatocnehodnotyvektoraxEditField
            app.ZadajpociatocnehodnotyvektoraxEditField = uieditfield(app.UIFigure, 'numeric');
            app.ZadajpociatocnehodnotyvektoraxEditField.Position = [227 263 100 22];

            % Create vypocetButton
            app.vypocetButton = uibutton(app.UIFigure, 'state');
            app.vypocetButton.ValueChangedFcn = createCallbackFcn(app, @vypocetButtonValueChanged, true);
            app.vypocetButton.Text = 'vypocet';
            app.vypocetButton.Position = [227 200 100 23];

            % Create UITable
            app.UITable = uitable(app.UIFigure);
            app.UITable.ColumnName = {'Column 1'; 'Column 2'; 'Column 3'; 'Column 4'};
            app.UITable.RowName = {};
            app.UITable.Position = [126 1 302 185];

            % 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)

            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

and this is a code what I try to implement

Start.m

in = data();       %Načítanie vstupných údajov
for k=1:length(in) %Výpis vstupných údajov na obrazovku
    in(k)
end   

in.x_1=newton(in); %Volanie Newtonovej metódy
disp(['Newton:']);
disp(['Výsledný vektor x:']);
for i=1:in.n  %Vypis konecnych hodnot vektora x 
    fprintf('x(%d)=%g\n' , i,in.x_1(i));
end
X=symvar(in.f); %Najdenie symbolickych premennych v sustave f
disp(['1. Test - Dosadenie vektora x do funkcií:']);
for i=1:in.n  %Vypis konecnych hodnot vektora x 
     fprintf('f(%d)=%g\n', i,double(subs(in.f(i),X,in.x_1))); %Dosadenie vektora x do funkcií
end
x=solve(in.f, 'Real',true); %Volanie Matlabovskej funkcie solve
p=length(x.(['x',num2str(1)])) %Urcenie poctup stacionarnzch bodov pre x_1
for i=1:in.n 
    for h=1:p
        x_out(i,h)=x.(['x',num2str(i)])(h);
    end
end
disp(['Solve:']);
disp(['Výsledný vektor resp. vektory x:']); %Vypis stacionarnych bodov x_h
for h=1:p
fprintf('Vektor - %d\n' , h);
for i=1:in.n
     fprintf('x(%d)=%g\n', i,double(x_out(i,h)));
end
end
disp(['2. Test - Dosadenie vektora x do funkcií:']);
for h=1:p %Dosadenie stacionarnych bodov x_h do sustavy f
    fprintf('Vektor - %d\n' , h);
for i=1:in.n %Ziskanie hodnot stacionarneho bodu x_h
     in.x(i)=double(x_out(i,h));
end
for i=1:in.n
   fprintf('f(%d)=%g\n', i,double(subs(in.f(i),X,in.x)));
end
end

data.m

function in=data()
%Testovaci priklad
disp(['Zadaj pocet nelinearnych rovnic:']);
in.n=input('n='); %Nacitanie poctu nelinearnych funkcii
disp(['Zadaj presnost riesenia:']);
in.eps=input('presnost='); %Nacitanie presnosti e


disp(['Zadaj nelinearne rovnice:']);
for i=1:in.n
    fprintf('f(%d)' , i);
    in.f(i)=str2sym(input('=')); %Nacitanie nelinearnych funkcii, vytvorenie f
end
disp(['Zadaj pociatocne hodnoty vektora x:']);
for i=1:in.n
    fprintf('x(%d)' , i);
    in.x(i)=input('='); %nacitanie pociatocneho vektora x(k)
end

end

and the newton.m this is just a calculations

function [x1]=newton(in)

X=symvar(in.f);   %Nájdenie symbolických premenných v sústave f
n=length(X);    %Zistenie počtu premenných vo vektore x
x1=zeros(1,n);   %Definovanie pomocného vektora x(k+1)

x0=in.x; %vektor x(k)

J=jacobian(in.f,X); %Určenie zložiek Jacobiovej matice J(x)

podmienka=true %Nastavenie, že -f(x(k)))/J(x(k))>e
while podmienka
    f=double(subs(in.f,X,x0)); %urcenie f(x(k))

    J=double(subs(J,X,x0)); %urcenie J(x(k))

    %Vypocet f(x(k)))/J(x(k))
    prirastok=(inv(J)*f')'; %Vysledok je vektor prirastkov dx1, dx2, ..., dxn
    x1=x0-prirastok; %Vypocet hodnot vektora x(k+1) podla (3.13)

    eps_p=max(abs(-prirastok));
    x0=x1; %Priradenie x(k)=x(k+1)

    podmienka=eps_p>in.eps; %Test, ci -f(x(k)))/J(x(k))>e
end
end

[Jan]

@martin Kostovcik: We are not all "guys" here.

Separate the actual calculations from the GUI. If they are working, it is not efficient to post the ocde here. Your chances to get a useful answer are growing, if you concentrate on the problem.

"I need to print that "f" on botton into table samehow" - It would take me some time to find out, which "f" you meanand in which table you want to insert it. Most of all I cannot guess, what "somehow" means, because this is your decision.

Avoid field names like "ZadajpociatocnehodnotyvektoraxEditFieldLabel". They are the pure horror.

Instead of hiding an index in the field name, prefer an array:

% x.(['x',num2str(1)])
x.x(1)  % Smarter

[martin Kostovcik]

execuse me,

I mean this as "f"

for i=1:in.n
    
   fprintf('f(%d)=%g\n', i,double(subs(in.f(i),X,in.x))); % Only this is important to print somehow
  
end

yes, I totally understand, but this is a code from my teacher and I have to use this code as he wrote it

[Monica Roberts]

It really depends on when you want your code to run. You probably want to add callbacks to start running the code. You can add callbacks by adding a component in the "Design View" and then add a callback: https://www.mathworks.com/help/matlab/creating_guis/code-and-call-app-functions-in-app-designer.html

To run your functions within the app, you can create private or public functions: https://www.mathworks.com/help/matlab/creating_guis/code-and-call-app-functions-in-app-designer.html

Your app can display your results at the MATLAB Command Window like normal using disp or fprintf. But you could also use a text area to show the results. Or you could try to use a table. And to input data from the user, instead of the "input" function, you could try an edit field: https://www.mathworks.com/products/matlab/app-designer/component-gallery.html

The documentation is pretty vast. You may want to try following some tutorials or examples: https://www.mathworks.com/help/matlab/creating_guis/create-a-simple-app-or-gui-using-app-designer.html

Answer 1

[Willingo]

This is incredibly hard to read, and posting the app designer code doesn't help nearly as much as uploading the .mlapp file would.

I don't know if or how fprintf can be used with tables, and you could skip the for loop with compose somehow, but from what I can tell you are creating text of the form "f(x) = number". If you build a string array row-wise for each index, then you can use that to make a table and then store that into uitable.Data.

Take careful note of how we use strings, double quotes " ", and not char vectors, as strings are more suited to arrays. I also used sprintf, since we aren't writing to text or to the command window but to an array.

This replicates the app designer in scripts.

close all force %closes previous uifigure
% build function f(x) = x^2 + 5
for i = 1:10
    num1 = i; 
    num2 = i.^2 + 5;
    ourStringArray(i,1) = sprintf("f(%d)=%g", num1,num2);
end
% Create UIFigure and UITable. App designer already does this for you
uif = uifigure; %uifigure handle
uit = uitable(uif);

%if you do not assign col name it inherits "ourStringArray". Name "test" to
%whatever you want
ourTable = table(ourStringArray,'VariableNames', "test"); 

%Store the table into the UITable. You would have app.UITable.Data (UITable might have a differentname. Check on design view)
uit.Data = ourTable; 

Answer 2

[martin Kostovcik]

Yeah, it really bad, but I need to know how can I write this type of code into appdesigner :( its is quite new for me and I don´t understand how can I do that