Not Enough Input Arguments

Hello! I want to click in a axes image and find out the x and y position of the clicked position. I want making 3 click. And using it coordinates draw a circle. How I can do it? I trust makes first click coordinates...But I have a problem with recording coordinates in static text. Can you help me?

function varargout = demoomimageclick(varargin)
% DEMOOMIMAGECLICK MATLAB code for demoomimageclick.fig
%      DEMOOMIMAGECLICK, by itself, creates a new DEMOOMIMAGECLICK or raises the existing
%      singleton*.
%
%      H = DEMOOMIMAGECLICK returns the handle to a new DEMOOMIMAGECLICK or the handle to
%      the existing singleton*.
%
%      DEMOOMIMAGECLICK('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in DEMOOMIMAGECLICK.M with the given input arguments.
%
%      DEMOOMIMAGECLICK('Property','Value',...) creates a new DEMOOMIMAGECLICK or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before demoomimageclick_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to demoomimageclick_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help demoomimageclick

% Last Modified by GUIDE v2.5 24-Jun-2016 14:56:09

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @demoomimageclick_OpeningFcn, ...
                   'gui_OutputFcn',  @demoomimageclick_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
% End initialization code - DO NOT EDIT

% --- Executes just before demoomimageclick is made visible.
function demoomimageclick_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to demoomimageclick (see VARARGIN)

% Choose default command line output for demoomimageclick
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes demoomimageclick wait for user response (see UIRESUME)
% uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line.
function varargout = demoomimageclick_OutputFcn(hObject, eventdata, handles) 
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;

% --- Executes on button press in pushbutton1.
function pushbutton1_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
[FileName, PathName]=uigetfile('*.bmp; *.jpg; *.gif', 'Open File');
if FileName~=0
 rgb=imread(strcat(PathName, FileName));
end; 
h=rgb2gray(rgb);

handles.imageHandle=imshow(h, [], 'parent', handles.axes1);
set(handles.imageHandle, 'ButtonDownFcn', {@ImageClickCallback, handles});
guidata(hobject, handles);

function ImageClickCallback (objectHandle, eventData, handles_old, handles)
handles_lastUpdated=guidata(handles_old.axes1)
p=get(handles_lastUpdated.axes1,'CurrentPoint');
x=floor(p(1,1));
y=floor(p(1,2));
handles_lastUpdated.x=x;
handles_lastUpdated.y=y;
guidata(handles_lastUpdated.axes1, handles_lastUpdated)

set(handles.text4, 'String', num2str(handles_lastUpdated.x));
set(handles.text5, 'String', num2str(handles_lastUpdated.y));

Error which I have in 2 last line:

Error using demoomimageclick>ImageClickCallback Not enough input arguments.

Error while evaluating Image ButtonDownFcn

Pleas, help me...

Answer 1

[Jan]

The function is defined as:

function ImageClickCallback (objectHandle, eventData, handles_old, handles)

and called by:

set(handles.imageHandle, 'ButtonDownFcn', {@ImageClickCallback, handles});

The cell is converted to

ImageClickCallback(ObjectH, EventData, handles)

So what is "handles_old"? It is missing in the call or why does "handles" occur in the argument list?

[Iryna Mukanovska]

Sorry, it is my missing...

I am changed:

function ImageClickCallback(objectHandle, eventData, handles);
axesHandle=get(objectHandle, 'Parent');
coordinates=get(axesHandle, 'CurrentPoint');
coordinates=coordinates(1,1:2);
set(handles.text4, 'String', coordinates(1));
set(handles.text5, 'String', coordinates(2));

but I still have error in last 2 line...

if I trust have coordinates in helpdlg, it worked... but for static text-no...