Problem in MATLAB GUI. Invalid or deleted object..

set(handles.scale_box,'enable','on'); % This line works

st_scale = st_variogram_pooled(data_train); % external code to calculate scale

set(handles.scale_box, 'String', st_scale);% This line gives the above error

% All set commands give the error from here on in the callback

[Shrey Agarwal]

Calling the function 'st_variogram_pooled' is deleting all the objects in the gui.

[Adam]

st_variogram_pooled doesn't have access to the objects in the GUI so the only way it could delete them is if it uses functions like findall to do horrendous things to a UI.

But unless you can post that function there isn't really anything much we can say on it.

[Shrey Agarwal]

Actually I figured this out myself. There was a "close all;" command in the function 'st_variogram_pooled' and it was deleting all the objects in the GUI.

[Abhishek Maurya]

Thanks, Shrey for asking this ques. I had the same problem and now I have figured.

Answer 1

[Shameer Parmar]

According to me, it seems like the function 'st_variogram_pooled(data_train)' is calculating the scale in numeric format, so the value of variable 'st_scale' will be in numeric format and you are trying to put it into string format for GUI field 'scale_box' in next set() command.

Try to use:

set(handles.scale_box, 'String', num2str(st_scale));

same for all other set commands. Convert num into string using num2str command as I shown above.

[Shrey Agarwal]

There was no problem with set command. I have explained the problem in a comment to my question. Thank You for answering.

[Shameer Parmar]

Ok, so it seems the problem with function "st_variogram_pooled(data_train)", Can you please provide the details about this function. like logic inside this function or please attach your files so that I can debug and help you..