How to link a pushbutton with edit box and axes in MATLAB GUI. to plot graph with single pushbutton based on values written in edit box by user?

i wanted to plot graph of AM(modulated and demodulated both graphs) signal using a pushbutton with the help of values entered in edit box by user in MATLAB GUI.

Answer 1

[Praveen Reddy]

Hi Mohit,

I understand that you want to plot a graph with the data entered by a user in an edit field of MATLAB GUI. Here are some steps you can follow:

• Create a figure window.
• Create a UI axes.
• Create an edit field component.
• Create a push button. Associate a call back function with input parameters – UI axes, edit field for the push event.
• In the call back function, parse the edit field and plot on the UI axes.

Attaching a small code snippet for your reference.

function buttonPlot
% Create a figure window
fig = uifigure;

% Create a UI axes
ax = uiaxes('Parent',fig,...
            'Units','pixels',...
            'Position', [104, 123, 300, 201]);   
edit1 = uieditfield(fig,'Position',[420, 180, 100, 32]);
% Create a push button
btn = uibutton(fig,'push',...
               'Position',[420, 218, 100, 22],...
               'ButtonPushedFcn', @(btn,event) plotButtonPushed(btn,ax,edit1));
end
% Create the function for the ButtonPushedFcn callback
function plotButtonPushed(btn,ax,edit1)
        %Extract the values entered in edit field. Eg : 1 5 7 8 12
        x_values=str2num(edit1.Value);
        plot(ax,x_values);
end

To know more about “str2num”, please refer to the following MATLAB documentation:

https://www.mathworks.com/help/matlab/ref/str2num.html