Why is my Index exceeds matrix dimensions error gone after i add an pause to my code?

Hello everyone,

The following is a function of my entire code that is desined to plot several circles on an axis inside the interface "GUI" i am designing. I added the variables that normaly are defined by different functions so the code can be run.

I get the error Index exceeds matrix dimension when running this function but when i add an pause or a big while loop and do exactly the same, the error Index exceeds matrix dimension dos NOT appear and if i remove the pause/whileloop after the code has run one time the error doesnt apear anymore until i restarted matlab and i can't figure out why this happens. I added comments inside the code where the error apears.

%%Get the handles and disable plot and save

%Get the structure with handles and user data.

%handles = guidata(gcbo);

%set(handles.PlotTag, 'Enable', 'of')

%set(handles.SaveCalculationFileTag,'Enable', 'of')

%%Define the variables

%Define the center on the first plot for the x axis

Xcenter1 = 0;

%Define the center on the second plot for the x axis

Xcenter2 = 0;

%Define the center on the first plot for the y axis

Ycenter1.RadiusZero = 8;

%Define the center on the second plot for the y axis

Ycenter2.RadiusZero = 0;

%Define the x vector for the plot

x=0:0.01:1;

%Define the y vector for the plot

y=0:0.01:1;

%Set the hold on axis of so any old plot will be overwritten

hold off

%%Test if the table data is correct

%Test if the data the user put into the table is bigger than zero

%value = get(handles.TableWals2,'data');

%I create a standart table here normaly this value is called with:
% get(handles.TableWals2,'data')

value = {rand(3,3)};

for ii = 1:3

      value(ii,1) = {ii};
      value(ii,2) = {1};
      value(ii,3) = {0.5};
      value(ii,4) = {0};
      value(ii,5) = {1};
      value(ii,6) = {1};
      value(ii,7) = {0};
      value(ii,8) = {0};
  end
  LoopValue = size(value);
  for ii = 1 :LoopValue(1)
      for jj = 1 :LoopValue(2)
          if (jj ==3)
              jj = 4;
          end
          ErrorTest = cell2mat(value(ii,jj));
          %If the data is negative open an error box
          if (ErrorTest<0)
              errordlg('The input value has to be greater than zero', 'Input Value Error')
              ErrorHandles.Error(9) = 1;
              setappdata(0,'ErrorHandles',ErrorHandles)
              break
          end
          if (isnan(cell2mat(value(ii,jj))))
              errordlg('The input value has to be a number', 'Input Value Error')
              ErrorHandles.Error(10) = 1;
              setappdata(0,'ErrorHandles',ErrorHandles)
              valueNaN = 0;
              break
          else
              valueNaN = 1;
          end
      end

      %If the data is enterd correctly continue with the function. Else exit.
      %
      if (ErrorTest<0)||(valueNaN == 0)
          TableDataisCorrect = 0;
          break
      else
          TableDataisCorrect = 1;
      end

end

for ii = 1:LoopValue(1)

      %I create a standart table here normaly this value is called with:
      % get(handles.TableWals2,'data')
      value = {rand(3,3)};
      for ii = 1:3
          value(ii,1) = {ii};
          value(ii,2) = {1};
          value(ii,3) = {0.5};
          value(ii,4) = {0};
          value(ii,5) = {1};
          value(ii,6) = {1};
          value(ii,7) = {0};
          value(ii,8) = {0};
      end
      ErrorTest = cell2mat(value(ii,3));
      if (isnan(cell2mat(value(ii,3))))
          errordlg('The input value has to be a number', 'Input Value Error')
          ErrorHandles.Error(11) = 1;
          setappdata(0,'ErrorHandles',ErrorHandles)
          TableDataisCorrect = 0;
          break
      end

      %If the data is not between -1 or 0.5

      if (ErrorTest<-1)||(ErrorTest>0.5)
          errordlg('Input error: enter a number between [-1]and [0.5]', 'Input Value Error')
          ErrorHandles.Error(12) = 1;
          setappdata(0,'ErrorHandles',ErrorHandles)
          TableDataisCorrect = 0;
          break
      end
  end

%%Start the function after testing is complete

%If the data is enterd correctly continue with the function. Else exit.

if (TableDataisCorrect == 1)

      ErrorHandles.Error(9) = 0;
      ErrorHandles.Error(10) = 0;
      ErrorHandles.Error(11) = 0;
      ErrorHandles.Error(12) = 0;
      setappdata(0,'ErrorHandles',ErrorHandles)
      %%%%%%%%%%%%%%%%%%%
      %Get user thickness
      %%%%%%%%%%%%%%%%%%%
      Get_Thicknes = value;
      %%Get the user input from table2    
      %Get the user input for the number of layers and fill the user thickness
      %into radius start with the last layer and work from inside to outside    
      zz = size(value);
      zz = zz(1);
      ii = 1;
      %iiMax = (str2double((get(handles.Wals2Tag,'string'))));
      iiMax = 3;
      while (zz >0 && ii<iiMax+1)
          Radius.RadiusLayer(ii) = Get_Thicknes(zz,2);
          ii = (ii + 1);
          zz = (zz - 1);
      end
      %%Get the user input from roller2    
      %Get the user input for the number of layers he has. Change it to a
      %double and go into a for loop.    
      %handles.num = str2double(get(handles.Wals2Tag,'string'));
      handles.num = 3;
      if (handles.num == 0)
          Core = 30;
          Save.RadiusLayer2(1) = Core;
          MaxRadius2 = Core;
          YcenterAll2 = Ycenter2.RadiusZero + MaxRadius2;
          plot(Xcenter2+Save.RadiusLayer2(ii)*cos(2*pi*x),YcenterAll2+Save.RadiusLayer2(ii)*sin(2*pi*y));%the circle plot
          hold on
      else
          %%Calculate all radii and the centerpoint.
          for ii = 1 : handles.num
              %Core = str2double(get(handles.Core2Tag,'string'));
              Core = 30;
              Save.RadiusLayer2(1) = Core;            
              %Calculate all radius and save them for each layer            
              Save.RadiusLayer2(ii+1) = Save.RadiusLayer2(ii)+cell2mat(Radius.RadiusLayer(ii));            
              %Define the biggest radius, this is needed for the plot            
              RadiusMax2.Max = Save.RadiusLayer2(end);            
              %Calculate the new Ycenterpoint of the biggest radius, this is
              %needed for the plot            
              MaxRadius2 = (RadiusMax2.Max);
              YcenterAll2 = Ycenter2.RadiusZero + MaxRadius2;
          end
          %%Plot the users layers        
          %Plot the user thickness in circles        
          for ii = 1 : (handles.num+1)
              plot(Xcenter2+Save.RadiusLayer2(ii)*cos(2*pi*x),YcenterAll2+Save.RadiusLayer2(ii)*sin(2*pi*y));
              %Put hold on to save al data that you are plotting            
              hold on
          end
      end
      %%Plot the core    
      %Plot a circle over the core and make it black    
      hMyCircle = rectangle('position',[(Xcenter2-Core) (YcenterAll2-Core) (2*Core) (2*Core)],'curvature',[1,1]);
      set(hMyCircle,'FaceColor','black')

      %%Save the Radius and update the guidata    
      %Save MaxRadius2 into handles    
      handles.MaxRadius = MaxRadius2;

      %%Get the user input from table1    
      %Get the user thickness
      %I create a standart table here normaly this value is called with:
      % get(handles.TableWals1,'data')
      value2 = {rand(3,3)};
      for ii = 1:3
          value2(ii,1) = {ii};
          value2(ii,2) = {1};
          value2(ii,3) = {0.5};
          value2(ii,4) = {0};
          value2(ii,5) = {1};
          value2(ii,6) = {1};
          value2(ii,7) = {0};
          value2(ii,8) = {0};
      end
      %Get_Thicknes = get(handles.TableWals1,'data');
      Get_Thicknes = value2;
      zz = size(value2);
      zz = zz(1);

      %zz = str2double((get(handles.Wals1Tag,'string')));
      %zoalng zz groter is als 0..
      ii = 1;
      %iiMax = (str2double((get(handles.Wals1Tag,'string'))));
      iiMax = 3;
      while (zz >0 && ii<iiMax+1)
          Radius.RadiusLayer(ii) = Get_Thicknes(zz,2);
          ii = (ii + 1);
          zz = (zz - 1);
      end
  end
  %%Get the user input from Roller1
  %Get the user input for the number of layers he has. Change it to a
  %double and go into a for loop.
  %handles.num =  str2double(get(handles.Wals1Tag, 'string'));
  handles.num = 3;
  if (handles.num == 0)
      Core =20;
      Save.RadiusLayer1(1) = Core;
      MaxRadius1 = Core;
      YcenterAll1 = 2*MaxRadius2 + MaxRadius1;
      ii = 1;
      plot(Xcenter1+Save.RadiusLayer1(ii)*cos(2*pi*x),YcenterAll1+Save.RadiusLayer1(ii)*sin(2*pi*y));%the circle plot
      hold on
  else
      %%Calculate all radii and the centerpoint.
      for ii = 1 : handles.num

          %In this part of the function i usualy get the error Index exceeds 
          %matrix dimension when "handles.num = 0" and according to the ifstatement 
          %it is imposible that this forloop of the statement is entered.
          %But when i add an pause or a big while loop and
          %do exactly the same, the error Index exceeds 
          %matrix dimension dos NOT appear and i can't figure
          %out why. 

          %         testingError = 1;
          %         while(testingError ~=3000)
          %             testingError = testingError+1;
          %         end

          Core = 20;
          Save.RadiusLayer1(1) = Core;

          %Calculate all radius and save them for each layer

          Save.RadiusLayer1(ii+1) = Save.RadiusLayer1(ii)+cell2mat(Radius.RadiusLayer(ii));

          %Define the biggest radius, this is needed for the plot

          RadiusMax1.Max = Save.RadiusLayer1(end);

          %Calculate the new Ycenterpoint of the biggest radius, this is 
          %needed for the plot

          MaxRadius1 = RadiusMax1.Max;
          Ycenter1.Max = Ycenter1.RadiusZero + MaxRadius1;
      end

      %calculate the new center point on the Y axis

      MaxRadius1 = (RadiusMax1.Max);
      YcenterAll1 = 2*MaxRadius2 + MaxRadius1;
      %%Plot the users layers

      %Plot the user thickness in circles

      for ii = 1 : (handles.num+1)
          plot(Xcenter1+Save.RadiusLayer1(ii)*cos(2*pi*x),YcenterAll1+Save.RadiusLayer1(ii)*sin(2*pi*y));
      end
  end
  %%Plot the core

%Plot a circle over the core and make it black

hMyCircle = rectangle('position',[(Xcenter1-Core) (YcenterAll1-Core) (2*Core) (2*Core)],'curvature',[1,1]);
set(hMyCircle,'FaceColor','black')

axis equal

%%Test if the table data is correct.

%handles.TableWals2Done2 = 0;
handles.SaveRadius1 = MaxRadius1;
handles.SaveRadius2 = MaxRadius2;

%Update the handles structure

setappdata(0, 'test',handles)

% End function TableWals2_CellEditCallback

The things i have looked at are:

• hyperthreading
• Looping between functions
• Double defined variables
• I also tryed adding a whileloop to the function the effect that this had was that the error Index exceeds matrix dimensions appeared only one out of ten times.

But none of these options fixed the problem so im hoping that someone has had similar problems and find out how to fix it.

The variables that are changed that make this function crash:

• handles.num
• Core

Im using matlab version R2011b on an Fujitsu i5 core with windows 7 operating system.

Regards,

Nick

[Jan]

Please use meaningful tags only. All questions in this forum concern "matlab" and most of them "matlab code".

Please learn how to format code: http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup

It would be extremely helpful, if you mention the line, which causes the error, especially because you have posted a really very large block of code. You cannot expect, that we dig in every line, when you have the error message on your screen already. You mention, that you have added a comment inside the code, but due to a proper formatting of the code, finding such comments is tedious.

I do not understand the list of things you have tried already. What does "hyperthreading" exactly mean? Why do you assume a connection to hyperthreading and does this term mean, that you have enabled or disbaled hyperthreading? "Looping between functions" is not clear also, as "Double defined variables" is not either. Where did you add a WHILE loop and why?

[Nick]

I will do my best on the tags this is the first post i ever made.

The error happens in the forloop that starts in line 233.

I added the while loop at line 242 and i added the while loop as an alternative for the pause to slow the function down

And hyperthreading "Hyper-Threading technology" is when multiple tasks are running at once I thought matlab was running multiple functions at the same time. I tryed disabling it using the function: maxNumCompThreads(1). And i also tryed the other things that are mentioned in: http://www.mathworks.com/matlabcentral/answers/1848-turn-off-hyperthreading-when-i-am-using-matlab

To explain (double defined variables) my code has over 60 functions and more than 40 handles that are used at different places. I have looked if i used the handles that i am using in this code were overwritten in a different function. Or by matlab.

And "Looping between functions" several of the functions i made are called by different functions for updates on the handles or variabels. I looked here if somewere the functions enterd a endles loop that caused the error.

[Jan]

@Nick: Thanks for the clarifications. I really appreciate this.

"Hyper-threading" means, that the operating system can address two logical cores for one physical core. While hyper-threading can be triggered in the BIOS/EFI-setup only, "multi-threading" can be controlled for each program, e.g. by the mentioned maxNumCompThread.

Answer 1

[Jan]

Just a note: Replace:

cell2mat(value(ii,3))

by the nicer and faster:

value{ii,3}

But to your problem: A PAUSE statement starts the evaluation of callbacks. Does the problem appear inside a callback, and if so, what are the Interruptible and BusyAction properties of the calling GUI object?

[Nick]

The problem appears after i called the handle from an edit box. In line 223 this is commented out: handles.num = str2double(get(handles.Wals1Tag,'string')); The value of Wals1Tag is in average between 0 and 10. But somthimes when the value is '0' the error occures.

The Interruptible value = on; and The BusyAction = queue;