how can i run a .m file pressing a push button ?

my code of the funtion is :

function cropping_fun(image, x_TopLeft, y_TopLeft, x_BottomRight, y_BottomRight)

clc; close all;

% let us handle cases if the user inputs incorrect or insufficient inputs

if nargin>0 if (ischar(image))&&(exist(image, 'file')==2) A=double(imread(image)); elseif exist('image', 'var') A=double(image); end size_A=size(A); end

if nargin==0 A=double(imread('D:\\Thesis Code\\Source Code\\StegoImage.png')); size_A=size(A); x_TopLeft=ceil(size_A(1)/4); y_TopLeft=ceil(size_A(2)/4); x_BottomRight=floor(3*size_A(1)/4); y_BottomRight=floor(3*size_A(2)/4); elseif nargin==1 x_TopLeft=ceil(size_A(1)/4); y_TopLeft=ceil(size_A(2)/4); x_BottomRight=floor(3*size_A(1)/4); y_BottomRight=floor(3*size_A(2)/4); elseif nargin==2 y_TopLeft=ceil(size_A(2)/4); x_BottomRight=floor(3*size_A(1)/4); y_BottomRight=floor(3*size_A(2)/4); elseif nargin==3 x_BottomRight=floor(3*size_A(1)/4); y_BottomRight=floor(3*size_A(2)/4); elseif nargin==4 y_BottomRight=floor(3*size_A(2)/4); end

%==========================================================================

% size of the cropped image

M=x_BottomRight-x_TopLeft+1; N=y_BottomRight-y_TopLeft+1;

%==========================================================================

% Memory allocation for the output image for faster implementation of the % code

image_dim=size(size_A);

if image_dim(2)==3 P=3; B=zeros(M, N, P); else B=zeros(M, N); end

%==========================================================================

if ((M>0)&&(N>0))

    for i=1:M
        for j=1:N
            B(i, j, :)=A(x_TopLeft+i, y_TopLeft+j, :);
        end
    end

    new_imagesc(A);
    title('Original image');

    new_imagesc(B);
    title('Cropped image');
else
    error('Check the dimensions of the cropped image.');
end

end % End of the cropping_fun

%==========================================================================

function new_imagesc(A)

%==========================================================================

% Author: Prashant Athavale % Date 11/19/2011 % Please acknowledge my name if you use this code, thank you. % This is a function to display images at the center of the screen using % Matlab's imagesc function

%==========================================================================

figure; screen_size=get(0,'screensize'); screen_width=screen_size(3); screen_height=screen_size(4); figure_width=screen_size(4)/2; % width of the figure figure_height=screen_size(4)/2; % height of the figure x_lowerbottom=(screen_width-figure_width)/2; y_lowerbottom=(screen_height-figure_height)/2; set(gcf,'position',[x_lowerbottom y_lowerbottom figure_width figure_height]); image_dim=size(size(A));

% What to do if the image is color/RGB or grayscale

if image_dim(2)==3 M=max(max(max(A))); elseif image_dim(2)==2 M=max(max(A)); end

if M>1

    M=1;
else
    M=255;
end

% imagesc likes the images from 0 to 255 % if they are not then we make them so.

A=double(A); imagesc(uint8(A*M)); if image_dim(2)==3 colormap('colormap'); else colormap('gray'); end

end % end of function new_imagesc

%==========================================================================

Answer 1

[Adam]

Just call cropping_fun from your push button callback and pass it the 5 required arguments.

You haven't given enough information to know where you get those 5 arguments from or what you want to do with the output from calling your function so that is really all the advice I can give without wasting time giving advice you don't even need.

As an aside 'clc' is not generally very useful in a function and would generally be considered an undesirable side effect of calling a function that purports to just crop something, but I guess that is your business!

[Farjana Yeasmin]

i can't understand , i am a beginner of matlab .. will u plz say it more clearly ? thank you

[Adam]

You literally just type:

cropping_fun(image, x_TopLeft, y_TopLeft, x_BottomRight, y_BottomRight)

in your push button callback, supplying all those inputs as arguments. I don't know where you intend to get those input arguments from.

If you don't know how to work with callbacks I suggest you look in the Matlab help at e.g.

http://uk.mathworks.com/help/matlab/creating_guis/add-code-for-components-in-callbacks.html