How can I draw interactively a polygon on axes in App designer ?

Question

Anatole Jimenez 2019-3-22

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/451735-how-can-i-draw-interactively-a-polygon-on-axes-in-app-designer

评论： Pietro Prestininzi 2020-2-7

Hello,

I am making an app on App designer and I need to be able to draw interactively a polygon on an image display on an axes.

I already tried imploy, roipoly and drawpolygon functions with 'app.UIAxes' as 'ax' parameter but none of them seem to be accepted by App designer.

Can someone help me ?

Thanks,

Anatole Jimenez

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Anatole Jimenez 2019-3-22

在 MATLAB Online 中打开

Here is the error for the following instruction :

function mask = drawplaque(app)
            h2 = impoly(app.UIAxes);
            mask = h2.createMask;
end

The error (quite long) :

Error using matlab.ui.control.UIAxes/get
There is no CurrentPoint property on the UIAxes class.
Error in getCurrentPoint (line 10)
p = get(h,'CurrentPoint');
Error in impoly>impolyAPI/animateLine (line 577)
		[x_init,y_init] = getCurrentPoint(h_axes);
Error in iptaddcallback/callbackProcessor (line 149)
                    fun(varargin{:});
 
Error using matlab.ui.internal.controller.FigureController/handleEvent (line 300)
Error while evaluating Figure WindowButtonMotionFcn.
Error using matlab.ui.control.UIAxes/get
There is no CurrentPoint property on the UIAxes class.
Error in getCurrentPoint (line 10)
p = get(h,'CurrentPoint');
Error in impoly>impolyAPI/animateLine (line 577)
		[x_init,y_init] = getCurrentPoint(h_axes);
Error in iptaddcallback/callbackProcessor (line 149)
                    fun(varargin{:});
 
Error using matlab.ui.internal.controller.FigureController/handleEvent (line 300)
Error while evaluating Figure WindowButtonMotionFcn.
Error using matlab.ui.control.UIAxes/get
There is no CurrentPoint property on the UIAxes class.
Error in getCurrentPoint (line 10)
p = get(h,'CurrentPoint');
Error in impoly>impolyAPI/animateLine (line 577)
		[x_init,y_init] = getCurrentPoint(h_axes);
Error in iptaddcallback/callbackProcessor (line 149)
                    fun(varargin{:});
 
Error using matlab.ui.internal.controller.FigureController/handleEvent (line 300)
Error while evaluating Figure WindowButtonMotionFcn.
Error using matlab.ui.control.UIAxes/get
There is no CurrentPoint property on the UIAxes class.
Error in getCurrentPoint (line 10)
p = get(h,'CurrentPoint');
Error in impoly>impolyAPI/animateLine (line 577)
		[x_init,y_init] = getCurrentPoint(h_axes);
Error in iptaddcallback/callbackProcessor (line 149)
                    fun(varargin{:});
 
Error using matlab.ui.internal.controller.FigureController/handleEvent (line 300)
Error while evaluating Figure WindowButtonMotionFcn.
Error using matlab.ui.control.UIAxes/get
There is no CurrentPoint property on the UIAxes class.
Error in getCurrentPoint (line 10)
p = get(h,'CurrentPoint');
Error in impoly>impolyAPI/animateLine (line 577)
		[x_init,y_init] = getCurrentPoint(h_axes);
Error in iptaddcallback/callbackProcessor (line 149)
                    fun(varargin{:});
 
Error using matlab.ui.internal.controller.FigureController/handleEvent (line 300)
Error while evaluating Figure WindowButtonMotionFcn.
Error using matlab.ui.control.UIAxes/get
There is no CurrentPoint property on the UIAxes class.
Error in getCurrentPoint (line 10)
p = get(h,'CurrentPoint');
Error in impoly>impolyAPI/animateLine (line 577)
		[x_init,y_init] = getCurrentPoint(h_axes);
Error in iptaddcallback/callbackProcessor (line 149)
                    fun(varargin{:});
 
Error using matlab.ui.internal.controller.FigureController/handleEvent (line 300)
Error while evaluating Figure WindowButtonMotionFcn.
Error using matlab.ui.control.UIAxes/get
There is no CurrentPoint property on the UIAxes class.
Error in getCurrentPoint (line 10)
p = get(h,'CurrentPoint');
Error in impoly>impolyAPI/animateLine (line 577)
		[x_init,y_init] = getCurrentPoint(h_axes);
Error in iptaddcallback/callbackProcessor (line 149)
                    fun(varargin{:});
 
Error using matlab.ui.internal.controller.FigureController/handleEvent (line 300)
Error while evaluating Figure WindowButtonMotionFcn.
Error using matlab.ui.control.UIAxes/get
There is no CurrentPoint property on the UIAxes class.
Error in getCurrentPoint (line 10)
p = get(h,'CurrentPoint');
Error in impoly>impolyAPI/animateLine (line 577)
		[x_init,y_init] = getCurrentPoint(h_axes);
Error in iptaddcallback/callbackProcessor (line 149)
                    fun(varargin{:});
 
Error using matlab.ui.internal.controller.FigureController/handleEvent (line 300)
Error while evaluating Figure WindowButtonMotionFcn.
Error using matlab.ui.control.UIAxes/get
There is no CurrentPoint property on the UIAxes class.
Error in getCurrentPoint (line 10)
p = get(h,'CurrentPoint');
Error in impoly>impolyAPI/animateLine (line 577)
		[x_init,y_init] = getCurrentPoint(h_axes);
Error in iptaddcallback/callbackProcessor (line 149)
                    fun(varargin{:});
 
Error using matlab.ui.internal.controller.FigureController/handleEvent (line 300)
Error while evaluating Figure WindowButtonMotionFcn.

Anatole Jimenez 2019-3-22

在 MATLAB Online 中打开

For this draw polygon :

function mask = drawplaque(app)
            h2 = drawpolygon(app.UIAxes);
end

This error :

Error using images.roi.internal.ROI/parseInputs
ROI parent must be a valid Axes object.
Error in images.roi.Polygon
Error in drawpolygon (line 155)
h = images.roi.Polygon(varargin{:});
Error in app2/drawplaque (line 84)
            h2 = drawpolygon(app.UIAxes);
Error in app2/DrawnewplaqueButtonPushed (line 151)
            mask = drawplaque(app);
 
Error using matlab.ui.control.internal.controller.ComponentController/executeUserCallback (line 335)
Error while evaluating Button PrivateButtonPushedFcn.