that code does not work well and every time give the same number 5 times every time and not indexd to be used in an another place thank you

no=5;
x=zeros(no,1);
for i=1:no
    waitfor(app.refindexEditField,'value');
    x(i)=app.refindexEditField.Value;
    
end
app.refindexEditField.Value=inf;
fprintf(' %.1f \n ',x)
plot(app.UIAxes,(1:no)',x(1:i),'-r')

[Walter Roberson]

You have a different problem: your code does not permit entering the same value twice in a row. The value property is not considered to have changed if it is set to the same thing as at was before. You would need something like

app.refindexEditField.Value=inf;

before the waitfor()

[m.montaser sabry]

Thank you Walter

Answer 1

[Umar]

Hi @m.montaser sabry,

The problem arises from the way the code is structured, particularly with the waitfor function. This function halts execution until the specified condition is met, which may lead to repeated values if the input field is not updated correctly. To resolve this, consider using a callback function that triggers when the value in app.refindexEditField changes. Here’s a revised approach:

no = 5;
x = zeros(no, 1);
for i = 1:no
  % Wait for user input
  app.refindexEditField.Value = input('Enter a value: '); % Prompt for input
  x(i) = app.refindexEditField.Value; % Store the input value
end
app.refindexEditField.Value = inf; % Reset the input field
fprintf(' %.1f \n ', x);
plot(app.UIAxes, (1:no)', x, '-r');

In this version, the user is prompted to enter a value directly in the command window, ensuring that each input is unique. This method allows for better control over the input process and prevents the same value from being recorded multiple times.

[m.montaser sabry]

Dear Umar

thank you but i do not want to use command window to input values but all should be within app designer to be implemented into my code

thank you again

[m.montaser sabry]

no=5;

x=zeros(no,1);

for i=1:no

app.refindexEditField.Value=input('Enter value: ');

x(i)=app.refindexEditField.Value;

end

app.refindexEditField.Value=inf;

% fprintf(' %.1f \n ',x)

plot(app.UIAxes,(1:no)',x,'-*r')

[m.montaser sabry]

Firstly thank you for your attention But I want to input from inside appdesigner not from command window and to Index input to be used through the rest of the code. Thank you

[Umar]

Hi @m.montaser sabry,

To achieve user input directly within MATLAB App Designer while ensuring that each value is unique, you can utilize a callback function that triggers when the user modifies the input field. Below is a revised approach that incorporates this functionality:

properties (Access = private) x % Array to store input values no = 5; % Number of inputs end

% Callback function for the input field
function refindexEditFieldValueChanged(app, event)
  persistent index; % To keep track of the current input index
  if isempty(index)
      index = 1; % Initialize index
      app.x = zeros(app.no, 1); % Preallocate array
  end

    % Store the input value
    app.x(index) = str2double(app.refindexEditField.Value);
    index = index + 1; % Increment index

    % Reset input field if all values are collected
    if index > app.no
        app.refindexEditField.Value = '';
        index = 1; % Reset index for next round
        plot(app.UIAxes, (1:app.no)', app.x, '-r'); % Plot the values
    end
  end

In this code, the refindexEditFieldValueChanged function is triggered whenever the user changes the value in the refindexEditField. The input values are stored in the x array, and once the specified number of inputs is reached, the input field is reset, and the values are plotted. This method ensures that all interactions remain within the app, providing a seamless user experience.

[m.montaser sabry]

Dear Umar many many thanks for you ,you put me on the right track and with some modifications it gives nice results. First I deleted str2doble it is good without it. Second I transfer plot to runbuttonpushed function do well what I want. Thanks a lot again, Could you send me your email to get some of your talent.

[m.montaser sabry]

And also change app.refindexEditField.Value = inf Instead of ‘’ Thank you