How do I call a plot from a function in a GUI?

Hi! I created a function that plots 3 different signals and an average of all the signals onto the same plot. This function works fine when I call it with an m file, but if I call it using my GUI I cannot get the plot to show up on my axes in the GUI. I must use the same function I created to run with my m file to be called with my GUI. Below is my function (noisysignals) and my GUI code.

Thanks!

MY FUNCTION

function noisysignals(a,b,c,d,e,g)
SR=500;
time=400./1000;

G=g/1000;

NumberofPoints=time.*SR;
increment=time./NumberofPoints;
t=0:increment:time;

x=b.*(t.^e).*exp(-t./G).*cos(2.*pi.*c.*t);

noise=rand(a,length(x)).*d;
copies=repmat(x,[a 1]);

copieswithnoise = copies+noise;
Average= mean(copieswithnoise);

hold on
line1 =plot (t,copieswithnoise (1,:), 'b', 'Linewidth', 1));
line2=plot (t,copieswithnoise (2,:), 'b', 'Linewidth', 1);
line3=plot (t,copieswithnoise (3,:), 'b', 'Linewidth', 1);
line4=plot ( t, Average, 'r', 'LineWidth', 3 );
hold off

title ('Signals With Noise','FontSize', 17);
xlabel ('Time (seconds)','FontSize', 12);
ylabel ('Voltage (Volts)','FontSize', 12);

legendHandle = [line1 line2 line3 line4];
legend(legendHandle([1 4]),'Individual Signals','Average of all Signals');

end

MY GUI (The important part- I skipped over defining each of my edit boxes)

--- Executes on button press in pushbutton1.
function pushbutton1_Callback(hObject, eventdata, handles)
hObject    handle to pushbutton1 (see GCBO)
eventdata  reserved - to be defined in a future version of MATLAB
handles    structure with handles and user data (see GUIDATA)

N= str2double(get(handles.copies, 'string'));
amplitude= str2double( get(handles.Amplitude, 'string'));
frequency= str2double(get(handles.Frequency, 'string'));
gamma= str2double(get(handles.Gamma, 'string'));
tau= str2double(get(handles.Tau, 'string'));
standardD= str2double(get(handles.SD, 'string'));

noisysignals (N, amplitude, frequency, standardD, gamma, tau);

Answer 1

[Stephanie]

I figured it out. It actually had absolutely nothing to do with my code. I had been entering my input A as 8.*10.^6 which worked fine in my function, but as soon as I entered it into my GUI it wouldn't work. Once I changed my A value to 8E6 it worked perfectly. Thanks for the help though!

[Muthu Annamalai]

You can use the function, 'eval' to check the input. But I don't recommend it. You should take user input as numbers instead.

Answer 2

[Muthu Annamalai]

When using the GUI, you should create a new figure() and save the handle to it.

h = figure();
plot(h, x_axis, y_axis, label, etc.. )

So I'd keep all the code same but pass in the handle information as first argument, and you're all set!

See : http://www.mathworks.com/help/matlab/ref/figure.html and http://www.mathworks.com/help/matlab/ref/plot.html

[Stephanie]

        Is this supposed to create an additional figure? When I tried this it created an additional figure, but I kept getting errors so the plot was blank. I need the plot to go in the axes in my GUI, not create an additional figure. Am I supposed to put that bit of code in my GUI or function?

        Thanks

Here is what I have tried in my function:

h= figure (1);

hold on

plot (h,t,copieswithnoise (1,:), 'b', 'Linewidth', 1);
plot (h,t,copieswithnoise (2,:), 'b', 'Linewidth', 1);
plot (h,t,copieswithnoise (3,:), 'b', 'Linewidth', 1);
plot (h, t, Average, 'r', 'LineWidth', 3 );
hold off

And I got this error:

Error using plot
String argument is an unknown option.

Error in noisysignals (line 28)
plot (h,t,copieswithnoise (1,:), 'b', 'Linewidth', 1);

Error in RedoProblem2GUI>pushbutton1_Callback (line
230)
noisysignals (N, amplitude, frequency, gamma, tau,
standardD);

Error in gui_mainfcn (line 96)
        feval(varargin{:});

Error in RedoProblem2GUI (line 42)
    gui_mainfcn(gui_State, varargin{:});

Error in
@(hObject,eventdata)RedoProblem2GUI('pushbutton1_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback

I have tried a few other variations and keep getting similar results