How do I display a graph with a calculate function in GUI?

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Bastion on 3 Aug 2011
Commented: VISHWAS CHAVAN on 23 Jan 2017
I'm developing a GUI in MATLAB trying to display a graph of concentration with respect to time.
I have coded a function that will calculate my concentration and I have made a button known as 'Calculate' which display the outcome after I input a few variables.
Now I want to make another button called 'Display' so when I push it, it will generate a plot with concentration to time.
I can't seem to find any info on this, any help would be great.
VISHWAS CHAVAN on 23 Jan 2017
Hello, Give the handle command for every plot command like plot(handles.Tag name of plot,x,y); same for the title and other command give the handle of the plot.

Arturo Moncada-Torres on 10 Aug 2011
I have tried the following code and it works. The problem is that x and y were not the same size. Insert the following code.
% --- Executes on button press in Button_CALC_C.
function Button_CALC_C_Callback(hObject, eventdata, handles)
% Choose default command line output for Plot_One
handles.output = hObject;
%Get user input from GUI
A = str2double(get(handles.input_A,'String'));
B = str2double(get(handles.input_B,'String'));
X = str2double(get(handles.input_X,'String'));
T1 = str2double(get(handles.input_T1,'String'));
T2 = str2double(get(handles.input_T2,'String'));
%Calculate data
sum1 = A + B * X + T1^2;
C1 = num2str(sum1);
set(handles.text_C1,'String',C1);
guidata(hObject, handles);
sum2 = A + B * X + T2^2;
C2 = num2str(sum2);
set(handles.text_C2,'String',C2);
guidata(hObject, handles);
% Update handles structure
guidata(hObject, handles);
% --- Executes on button press in Button_Plot_TvC.
function Button_Plot_TvC_Callback(hObject, eventdata, handles)
% Choose default command line output for Plot_One
handles.output = hObject;
axes(handles.T_C_Plot);
T1 = str2double(get(handles.input_T1,'String'));
T2 = str2double(get(handles.input_T2,'String'));
C1 = str2double(get(handles.text_C1,'String'));
C2 = str2double(get(handles.text_C2,'String'));
%%OPTION 1
% Create a 1D array from T1 to T2 in intervals of 1.
% x = T1:1:T2;
% Here you count the number of elements x has (type "doc numel" without
% noIntervals = numel(x);
% Create a 1D array from C1 to C2 in intervals of noIntervals.
% y = C1:noIntervals:C2;
%%OPTION 2
% Alternatively, you can do the following:
% Define the number of points you want to plot.
noPoints = 100;
% Create a 1D array from T1 to T2 with the desired number of points.
x = linspace(T1, T2, noPoints);
% Create a 1D array from C1 to C2 with the desired number of points.
y = linspace(C1, C2, noPoints);
plot (x,y);
title('Time vs Concentration');
xlabel('Time [s]');
ylabel('Concentration');
% Update handles structure
guidata(hObject, handles);
Choose whatever option you wand (and understand better!). Personally, I would go for Option 2, but you choose. Let me know if it works for you.
Arturo Moncada-Torres on 11 Aug 2011
Regarding your other question, post it in a new thread please. This is to keep the forum as neat as possible.

Arnaud Miege on 3 Aug 2011
You need to add a set of axes to your GUI and plot the data on the axes. Have a look at GUI with Multiple Axes in the documentation for an example of this (using GUIDE).
HTH,
Arnaud
Bastion on 8 Aug 2011
Thanx for the reply but the GUI with Multiple Axes is just too complicated for my level of understanding. Is there something easier?

Bastion on 10 Aug 2011
I have looked through the GUI with the multi axes tutorial and I think the following line is what I need but can't understand a few of the code:
function plot_button_Callback(hObject, eventdata, handles, varargin)
% hObject handle to plot_button (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Get user input from GUI
f1 = str2double(get(handles.f1_input,'String'));
f2 = str2double(get(handles.f2_input,'String'));
t = eval(get(handles.t_input,'String')); %%%%%%%%%%%%%%This line I don't understand %%%%%%%%
% Calculate data
x = sin(2*pi*f1*t) + sin(2*pi*f2*t);
y = fft(x,512);
m = y.*conj(y)/512; %%%Don't know how this formula works, any ideas? %%%
f = 1000*(0:256)/512; %%%Also don't understand this line %%%
% Create frequency plot in proper axes
plot(handles.frequency_axes,f,m(1:257)) %%%What is it plotting? %%%
set(handles.frequency_axes,'XMinorTick','on') %%%??? %%%
grid on
% Create time plot in proper axes
plot(handles.time_axes,t,x)
set(handles.time_axes,'XMinorTick','on')
grid on
Any help would be good