Error using feval, I TRY TO MAKE A PLOT

THIS IS MY ERROR Error using feval Undefined function 'ezfcnchk' for input arguments of type 'inline'.

Error in inline/feval (line 19)
    [varargout{1:max(1,nargout)}] = builtin('feval',varargin{:});

Error in specgraphhelper (line 31)
        [varargout{1:nargout}] = feval(varargin{:});

Error in matlab.graphics.function.FunctionLine>getFunction

Error in matlab.graphics.function.FunctionLine/updateFunction

Error in matlab.graphics.function.FunctionLine/set.Function_I

Error in matlab.graphics.function.FunctionLine/set.Function

Error in matlab.graphics.function.FunctionLine

Error in fplot>singleFplot (line 226)
        hObj = matlab.graphics.function.FunctionLine(fn{1},extraOpts{:},args{:});

Error in fplot>@(f)singleFplot(cax,{f},limits,extraOpts,args) (line 185)
        hObj = cellfun(@(f) singleFplot(cax,{f},limits,extraOpts,args),fn{1},'UniformOutput',false);

Error in fplot>vectorizeFplot (line 185)
        hObj = cellfun(@(f) singleFplot(cax,{f},limits,extraOpts,args),fn{1},'UniformOutput',false);

Error in fplot (line 156)
    hObj = vectorizeFplot(cax,fn,limits,extraOpts,args);

Error in Taller_modelos>calcular_Callback (line 74)
    fplot(handles.cuadro,pol,[min(x) max(x)]);

Error in gui_mainfcn (line 95)
        feval(varargin{:});

Error in Taller_modelos (line 16)
    gui_mainfcn(gui_State, varargin{:});

Error in
matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)Taller_modelos('calcular_Callback',hObject,eventdata,guidata(hObject)) 
Error while evaluating UIControl Callback.

[Stephen23]

@Paula Gamez: what exactly is stored in handles.cuadro ?

Answer 1

[Walter Roberson]

fplot is not defined for inline functions. You should assume that inline functions will fail in odd ways in any release after R13 (and I do not mean R2013*, I mean the release about a decade before that.)