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Sharing information between Callback functions in GUIDE

Latest activity Answered by Rik
on 13 Nov 2019
I'm trying to pass the value that I get in the textbox of edit1_Callback into the pushbutton2_Callback but I keep getting the error message that z_slice is invalid no matter how many times I try to pass it in and even when using the handles method.
function edit1_Callback(hObject, eventdata, handles)
global z_slice;
z_slice=str2double(get(hObject,'String'))
% Hints: get(hObject,'String') returns contents of edit1 as text
% str2double(get(hObject,'String')) returns contents of edit1 as a double
% --- Executes on button press in pushbutton2.
function pushbutton2_Callback(hObject, eventdata, handles)
sf = fit([handles.x3,handles.y3],handles.z3,'cubicinterp');
plot(sf,[handles.x3,handles.y3],handles.z3)
hold on
patch([handles.xmin,handles.xmin,handles.xmax,handles.xmax],[handles.ymin,handles.ymax,handles.ymax,handles.ymin],[z_slice,z_slice,z_slice,z_slice],'w','FaceAlpha',0.7);
title('3D Curve Fit w/Cubic Interpolation')
xlabel('X')
ylabel('Y')
zlabel('Value')

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1 Answer

Answer by Rik
on 13 Nov 2019

Because hObject is the handle to your pushbutton, you need to explicitly say you want to get the content of the edit box:
z_slice=str2double(get(handles.edit1,'String'))

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