MATLAB: Execute a callback function from outside of the GUI

callback function

I have a callback function in a GUI: Mesh_Callback(hObject, eventdata, handles). the GUI name is 'test'. How do i execute this callback function without using the GUI?

Best Answer

look at the help for the GUI. I.e, if your file is names MyGUI:

help myGUI

or look that commented text at the top of the GUI's *.m file:

% UNTITLED('CALLBACK',hObject,eventData,handles,...) calls the local % function named CALLBACK in UNTITLED.M with the given input arguments. %

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MATLAB: Having a logo or picture on the own GUI

Put this code in your FastDD_OpeningFcn() function to display an image in an axes on your GUI called axesImage:

% Read in a reza's color logo image.
% Prepare the full file name.
folder = pwd;
baseFileName = 'reza.jpg';
% Get the full filename, with path prepended.
fullFileName = fullfile(folder, baseFileName);
% Check for existence. Warn user if not found.
if ~exist(fullFileName, 'file')
    % Didn't find it there. Check the search path for it.
    fullFileName = baseFileName; % No path this time.
    if ~exist(fullFileName, 'file')
        % Still didn't find it. Alert user.
        errorMessage = sprintf('Error: %s does not exist.', fullFileName);
        uiwait(warndlg(errorMessage));
    end
else
      % Read it in from disk.
      rgbImage = imread(fullFileName);
    % Display the original color image.
    axes(handles.axesImage);
    imshow(rgbImage, []);
    title('Reza Logo Image', 'FontSize', 20);   
end

MATLAB: Interpolation outside boundaries.

griddata() does not have the option for extrapolation beyond the data-points. You can use scatteredInterpolant for this; however, it does not have a cubic interpolation option, and the extrapolation is also linear.

P = [0 0 0;
     20 0 5;
     0 20 5 ; 
     5 5 2;
     10 10 10 ;
     20 20 10] ;
x = P(:,1) ; y = P(:,2) ; z = P(:,3) ;
ti = 0:1:30;
[XI, YI] = meshgrid(ti,ti);
model = scatteredInterpolant(x, y, z, 'linear', 'linear');
ZI = model(XI, YI);
surf(XI,YI,ZI), hold
plot3(x,y,z,'ro'), hold off
colorbar

The best way to handle such cases is to have an equation of form z = f(x, y) and then use curve-fitting to estimate the unknown parameter in f(.). Then you can use f(.) to extrapolate the values.

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Related Solutions

MATLAB: Having a logo or picture on the own GUI

MATLAB: Interpolation outside boundaries.

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