??? Undefined function or method 'sliderK_Callback'

I am getting the error: ???

Undefined function or method 'sliderK_Callback' for input arguments of type 'double'.

Error in ==> Slider_nFlake at 28 sliderK_Callback(0,0);

The code is as follows:

    function Slider_nFlake  

%%Crea la figura
figura1 = figure ;

%%Create axes
graph = axes('LineWidth',1.5,'Position',[0.15 0.10 0.65 0.65]);

%%Create controls
% Sliders
sliderD = uicontrol('Style', 'slider', 'String', 'thickness',...
'Position', [20 370 200 20],'Callback',{@sliderD_Callback},...
'Min',1,'Max',10,'SliderStep',[0.001 0.001],'Value',3.0);
SliderDtext= uicontrol('Style', 'text','position',[20 350 200 20],'string','nFlakeRe'); 
textD = uicontrol('Style','text','Position', [20 390 100 20]);

sliderK = uicontrol('Style', 'slider', 'String', 'thickness',...
'Position', [230 370 200 20],'Callback',{@sliderK_Callback},...
'Min',0,'Max',10,'SliderStep',[0.001 0.001],'Value',0.0);
SliderKtext= uicontrol('Style', 'text','position',[230 350 200 20],'string','nFlakeIm');
textK = uicontrol('Style','text','Position', [230 390 100 20]);

sliderD_Callback(0,0); 
sliderK_Callback(0,0);

% update slider value

%%Callback
function sliderD_Callback(source,eventdata)
D = get(sliderD,'Value');
set(textD,'String',D) ;

K = get(sliderK,'Value');
set(textK,'String',K) ;
[dd,cc]=contrast2(D,K) ;

hold off ;
plot(dd,cc) ;
  end

end

Please could you actually tell me what Im doing wrong? I am trying to have a slider that when changed, gives the values to two variables D and K and put them into a function which I have in a different .m document:

function [dd,cc]=contrast2(nflakere,nflakeim)

lambda0=500;
nair=1;
nflake=nflakere+1i*nflakeim; 
nSi=2+1i*0.06
dSiO2=285;

%loop
i=1;
for dflake=0:0.1:35
    mSiO2=Sij(nair,nSiO2(lambda0))*Pj(nSiO2(lambda0),dSiO2,lambda0)*Sij(nSiO2(lambda0),nSi);

      mflake= Sij(nair,nflake)*Pj(nflake,dflake,lambda0)...
      *Sij(nflake,nSiO2(lambda0))*Pj(nSiO2(lambda0),dSiO2,lambda0)*Sij(nSiO2(lambda0),nSi);
  %bare silicon oxide reflection coefficient
      rSiO2=abs(mSiO2(2,1)/mSiO2(1,1))^2;
  %flake reflection coefficient
      rflake=abs(mflake(2,1)/mflake(1,1))^2;
  %Contrast
      C(i)=(rflake-rSiO2)/(rflake+rSiO2);

      dflake2(i)=dflake;

      i=i+1;

dd=dflake2;
cc=C;

end

As you can see dd and cc are the two variables I'm using in the slider_nflake.m and the D and K values obtained are used to obtain nFlake which consists of a nFlakeRe and nFlakeIm part (those values I would like to obtain when changing the slider). Please could someone help me!!! Thanks in advance

Answer 1

[Walter Roberson]

Your code shows you defining a nested function sliderD_Callback but there is no definition shown for any function sliderK_Callback, which you reference twice in your code.

[Guillermo Lopez]

and where do I need to define it? In the same place as sliderD?