Matlab - DARLE UNA DIRECCIÓN A UNA AXES???!!

function varargout = opciones(varargin)

gui_Singleton = 1;

gui_State = struct('gui_Name',       mfilename, ...

                   'gui_Singleton',  gui_Singleton, ...

                   'gui_OpeningFcn', @opciones_OpeningFcn, ...

                   'gui_OutputFcn',  @opciones_OutputFcn, ...

                   'gui_LayoutFcn',  [] , ...

                   'gui_Callback',   []);

if nargin && ischar(varargin{1})

    gui_State.gui_Callback = str2func(varargin{1});

end

if nargout

    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});

else

    gui_mainfcn(gui_State, varargin{:});

end

function opciones_OpeningFcn(hObject, eventdata, handles, varargin)

[a,map]=imread('ngc6543a.jpg');

[r,c,d]=size(a);

x=ceil(r/30);

y=ceil(c/30);

g=a(1:x:end,1:y:end,:);

g(g==255)=5.5*255;

set(handles.pushbutton1,'CData',g);

handles.output = hObject;

guidata(hObject, handles);

function varargout = opciones_OutputFcn(hObject, eventdata, handles)

varargout{1} = handles.output;

function axes1_ButtonDownFcn(hObject, eventdata, handles)

[filename, pathname] =  uigetfile({'*.pdf';'*.docx';},' Elegir archivo');

 if isequal(filename,0)

   return;

else

    b=fullfile(pathname, filename);

    open(b)

 end

function pushbutton1_Callback(hObject, eventdata, handles)

[filename, pathname] =  uigetfile({'*.pdf';'*.docx';},' Elegir archivo');

 if isequal(filename,0)

   return;

else

    b=fullfile(pathname, filename);

    open(b)

 end