How can I use an edit text box to plot a function in a GUI?

Hello,

I've tried just about everything I can think of to take a function input from a text edit box in a GUI and plot it. Here's my code currently:

function edit1_Callback(hObject, eventdata, handles)
% hObject    handle to edit1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit1 as text
%        str2double(get(hObject,'String')) returns contents of edit1 as a double

fct1 = get(handles.edit1,'string');
axes(handles.axes1);
plot(fct1)

I've tried various things, such as using str2func, messing with eval, etc. but nothing seems to work. Can someone help me out with correct syntax to make this happen?

Thanks!

SOLVED

Image Analyst helped me out and solved the issue:

Do a "whos" on it to see what it is. If it's a cell array, do this

ca = get(handles.edit1,'string');
whos ca
fct1 = char(ca);
whos fct1
axes(handles.axes1);
ezplot(fct1)

Answer 1

[Image Analyst]

Try ezplot() instead of plot. For example:

ezplot('sinc(x)')

[Ian Hanken]

This is also not giving me the desired output. Based on the error I'm getting, it seems my input is not being converted to a string by the get function. Know of a way I could rectify that?

[Image Analyst]

Do a "whos" on it to see what it is. If it's a cell array, do this

ca = get(handles.edit1,'string');
whos ca
fct1 = char(ca);
whos fct1
axes(handles.axes1);
ezplot(fct1)

[Ian Hanken]

Image Analyst, this solves my problem! Thanks. I don't know how to accept your answer, but I'll edit my top post!

[Adam]

There's a big green thing that says "Accept Answer"!