Undefined function for input arguments of type 'matlab.ui.Figure'.

Hi All,

Trying to run the following code by calling imspline (imspline is a defined class: classdef imspline < handle):

h = imspline(gca,'lineColor',[1 0.5 0],'pointColor',[0.2 0.8 0.4],'lineWidth',5);

It gives this error: Undefined function 'addImPoint' for input arguments of type 'matlab.ui.Figure'. Please give some suggestions. Would this error related to MATLAB versions? Thanks a lot in advance.

function obj = imspline(varargin)

% Set figure and axis

if nargin > 0 && isnumeric(varargin{1})%HD Original Code

obj.hAx = varargin{1};

obj.hFig = get(obj.hAx,'Parent');

else

obj.hFig = figure;

obj.hAx = axes;

end

set(obj.hAx,'XlimMode','Manual','YlimMode','Manual');

hold(obj.hAx);

% Crosshair over axis

hFig = obj.hFig;

idxCopy = find(strcmp(varargin,'copy'));

if ~isempty(idxCopy)

import_struct = varargin{idxCopy+1}.exportProperties;

obj.lineColor = import_struct.lineColor;

obj.pointColor = import_struct.pointColor;

obj.lineWidth = import_struct.lineWidth;

obj.saveState = import_struct.saveState;

obj.isOpen = 0;

obj.addGraphics;

return

end

iptPointerManager(hFig);

crosshair = @(hFig, currentPoint)...

set(hFig, 'Pointer', 'crosshair');

iptSetPointerBehavior(obj.hAx,crosshair);

% Add new point at buttonup

obj.id.addImPoint_id = iptaddcallback(obj.hFig,'WindowButtonUpFcn',{@addImPoint,obj}); %HD Original Code (Error)

obj.id.animateSpline_id = [];

% Parse input arguments

for c = 1:length(varargin)

if ischar(varargin{c})

varargin{c} = lower(varargin{c});

end

end

idxLineColor = find(strcmp(varargin,'linecolor'));

idxPointColor = find(strcmp(varargin,'pointcolor'));

idxLineWidth = find(strcmp(varargin,'linewidth'));

if ~isempty(idxLineColor)

obj.lineColor = varargin{idxLineColor+1};

end

if ~isempty(idxPointColor)

obj.pointColor = varargin{idxPointColor+1};

end

if ~isempty(idxLineWidth)

obj.lineWidth = varargin{idxLineWidth+1};

end

end

function obj = addImPoint(src,event,obj)

pos = get(obj.hAx,'CurrentPoint');

button = get(obj.hFig,'SelectionType');

if strcmp(button,'normal')

% add new impoint and set properties

x = pos(1,1);

y = pos(1,2);

if isempty(obj.hVert)

obj.hLine = line(x,y,'Parent',obj.hAx);

set(obj.hLine,'Color',obj.lineColor,'LineWidth',obj.lineWidth);

end

hNewImpoint = impoint(obj.hAx,x,y);

hNewImpoint.setColor(obj.pointColor);

obj.hVert{end+1} = hNewImpoint;

if isempty(obj.id.animateSpline_id)

obj.id.animateSpline_id = iptaddcallback(obj.hFig,'WindowButtonMotionFcn',{@animateSpline,obj});

end

elseif strcmp(button,'alt')

% Remove old axis and figure properties

obj.isOpen = 0;

iptremovecallback(obj.hFig, 'WindowButtonMotionFcn',obj.id.animateSpline_id);

animateSpline_id = [];

iptremovecallback(obj.hFig, 'WindowButtonUpFcn',obj.id.addImPoint_id);

addImPoint_id = [];

iptSetPointerBehavior(obj.hAx,[]);

% Draw new spline and make it dragable

obj.drawSpline;

for cVert = 1:length(obj.hVert)

obj.hVert{cVert}.addNewPositionCallback(@refreshVertexPosition);

end

iptaddcallback(obj.hLine,'ButtonDownFcn',{@lineButtonDown,obj});

% Set the arrow pointer for the line

hFig = obj.hFig;

iptPointerManager(hFig);

pointerBehavior.enterFcn = @(hFig,currentPoint) set(hFig,'Pointer','Crosshair');

pointerBehavior.exitFcn = @(hFig,currentPoint) set(hFig,'Pointer','Arrow');

pointerBehavior.traverseFcn = [];

iptSetPointerBehavior(obj.hLine,pointerBehavior);

obj.isOpen = 0;

notify(obj,'SplineClosing');

notify(obj,'SplineUpdated');

end

function animateSpline(varargin)

obj.drawSpline;

end

function refreshVertexPosition(varargin)

obj.drawSpline;

notify(obj,'SplineUpdated');

end

end

Answer 1

[Sanjana]

Hi,

The above issue might be due to the following possible reasons,

• Function Scope: Ensure that addImPoint function is defined within the same class defintion as imspline. MATLAB requires that all methods of a class be defined within the same file or be properly connected as methods of the class.
• Method Declaration: If addImPoint is a method of the imspline class, it should be declared within the methods block of the class. Make sure it is properly declared as a method.

Hope this helps!