complex error!!!Subscript indices must either be real positive integers or logicals

Question

i am working on a code which gives me following error. i donno whr i am goin wrong..can somebody help me please ??? Subscript indices must either be real positive integers or logicals.

     Error in ==> gabor_fn at 23
  G(fix(Sx)+x+1,fix(Sy)+y+1) = exp(-nf*pi*((xPrime/Sx(yPrime/Sy).^2)).*cos(2*pi*f*xPrime);

my code is

                             Sx=10;                    
                             Sy=8;         
                             f=0.1;
                              nf=1;
                             k=1;
                             i=1;
                             theta =(i*15*pi)/180;
                               N = 12;


             x = -fix(Sx):fix(Sx)       
             y = -fix(Sy):fix(Sy)         
              [rowsx colsx numberOfColorChannelsx] = size(x);        
               % Get size of existing image B. 
                [rowsy colsy numberOfColorChannelsy] = size(y);        
              % See if lateral sizes match.         
             if rowsy ~= rowsx || colsx ~= colsy         
             % Size of B does not match A, so resize B to match A's size.         
             y = imresize(y, [rowsx colsx]);         
             end
              xPrime = x * cos(theta) + y * sin(theta);             
              yPrime = y * cos(theta) - x * sin(theta);                      
           G(fix(Sx)+x+1,fix(Sy)+y+1) = exp(-nf*pi*((xPrime/Sx).^2+
          (yPrime/Sy).^2)).*cos(2*pi*f*xPri0me);    //THIS IS THE LINE WHERE I GET ERROR AND PARTICULARLY **G(fix(sx)+x+1,fix(sy)+y+1)**

Please format and indent your code so that it is readable by human beings. Also, proper capitalization and use of punctuation is appreciated on StackOverflow. — horchler, Nov 18 '13 at 16:54
See this question for the generic solution to this problem: http://stackoverflow.com/questions/20054047/subscript-indices-must-either-be-real-positive-integers-or-logicals-generic-sol — Dennis Jaheruddin, Nov 18 '13 at 17:35

score 2 · Answer 1 · answered Nov 18 '13 at 16:38

Run the code with dbstop if error, you will find that one of these is not a real positive integer or logical:

yPrime/Sy
fix(Sx)+x+1
fix(Sy)+y+1

OR you will find that you overloaded a function, that is one of these will give an error:

fix(0.5)
exp(0.5)
cos(0.5)

I bet this does the trick, but otherwise please give the values and sizes of all variables used at the line when the code stops.

complex error!!!Subscript indices must either be real positive integers or logicals

1 Answers1