Trouble with editText functions in GUI

I have been writing a script that creates a simple GUI for editing images.

The GUI has sliders and editText boxes that adjust HSV and RGB brightness etc. Everything works as intended when you move the sliders or change the data in the text box. However, after the first adjustment has been made in a GUI, that GUI no longer effects the image. The value changes, but the picture looks the same.

I think the problem lies in the Open function at the beginning of the script but I have no idea where to start.

Thanks in advance.

Below are the function lines for the GUIopen the textbox:

TextBox function:

    function red_edit_Callback(hObject, eventdata, handles)
    %get the string for the editText component
    sliderValue = get(handles.red_edit,'String');
    %convert from string to number
    sliderValue = str2double(sliderValue);
    revert_red = handles.new_image(:,:,3);
    %if user inputs something is not a number, or if the input is less than 0
    %or great than 24, then the slider defaults to 0
    if (isempty(sliderValue) || sliderValue < 0 || sliderValue > 24)
        set(handles.red_slider,'Value',0);
        set(handles.red_edit,'String','0');
    else
        set(handles.red_slider,'Value',sliderValue);
    end
    for row = 1 : size(handles.new_image,1) % for every pixel
             for col = 1 : size(handles.new_image,2)
handles.new_image(row,col,1) = handles.new_image(row,col,1)*handles.red_edit; %multiply red components by editText value
red_only (row, col) = handles.new_image(row,col,1)*handles.red_edit;
    end
end

if(handles.show_original == 1);                                             % displays 1 or 2 pictures based on user imput
subplot(1,2,1), subimage(handles.original_image)
title('Original Image');
subplot(1,2,2), subimage(handles.new_image)
title('New Image');
else
image(handles.new_image);
end

guidata(hObject, handles);

[david Landrith]

woops first time posting on this site.

thanks

Answer 1

[Matt Fig]

I don't think the problem is in the OpeningFcn of the figure. I don't see where you are updating the value of handles.new_image. Are you altering the image and then re-saving it to the handles structure? Since you are passing in handles, instead of getting the handles every time through GUIDATA or some other means, how is what you are altering being stored? For example:

handles = guidata(gcbf);  % Get previously stored GUIDATA
revert_red = handles.new_image(:,:,3);  % Get third page.
% Some code that changes revert_red
handles.new_image(:,:,3) = revert_red; %Assign altered data to handles.
guidata(gcbf,handles)  % Store altered image for later use, display.