Index exceeds matrix dimensions

Please find below my code:

readdata=get(handles.uitable2,'data');
  readdata=cellfun(@num2str, readdata, 'UniformOutput', false);
  [nr,nb]=size(readdata);
  for k=1:nr
      disp(k)
      disp(readdata(k,7))
      if strcmp(readdata(k,7),'1')==1
          readdata(k,:)='';
          range=strcat('J',num2str(indexvec(k)+1));
          xlswrite('cylinders record.xls','1','Record',range)
          if strcmp(readdata(k,8),'1')==1
              range=strcat('K',num2str(indexvec(k)+1));
              xlswrite('cylinders record.xls','1','Record',range)
          end
      end
  end
  set(handles.uitable2,'data',readdata)

the problem is that i'm getting an error msg that the index exceeds the matrix even though i am making the loop knowing the size of the matrix!!!!

please note that the 7th and 8th column of readdata are of logical format (checkboxes)!!

i would like to add that when no checkbox is checked i don't face this problem, it only occur when a checkbox is checked

[Jan]

Please post a copy of the complete error message. Then the readers do not have to guess, in which line the error occurres.

Are you sure that the 7th and 8th column contain the strings '1' and not the value true?

[Nagham Kabbara]

the error occurs at

   Index exceeds matrix dimensions.

Error in unmoldingcyl>refresh_Callback (line 236)
    disp(readdata(k,7))

Error in gui_mainfcn (line 96)
        feval(varargin{:});

Error in unmoldingcyl (line 42)
    gui_mainfcn(gui_State, varargin{:});

Error in @(hObject,eventdata)unmoldingcyl('refresh_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback

and yes i am sure that the 7th and 8th columns contain either '1' or '0'. when i display the readdata array before entering the loop everything seems to be right. but after entering the loop the first row is not read properly

[Guillaume]

What is the value of k when the error happens?

Can you add

assert(nb >= 8, 'not enough columns in the cell array')

before the loop and check that the assert does not get triggered?

As an aside, completely unrelated to your problem, why are you converting numbers to strings to then do slow string comparisons when number comparisons are fast? Also, strcmp(x, y) == 1 can be simply strcmp(x, y), the == 1 is just the identity operation. Finally, the normal way to delete a row is by assigning []. Assigning an empty string, '', works, but it's unusual and since there's no comment, begs the question: did you really mean that?

[Nagham Kabbara]

the error happens for k=nr-1.

i am converting the num to str because i am unable to read them as numbers (the 0 and 1 are equivalent to false and true, result of checking and unchecking the checkboxes)

[Nagham Kabbara]

i found the problem guys!!!!!

everytime a '1' is found the row is deleted and the array changes of size.

thank you all for your help