MATLAB: Index exceed matrix dimensions

Question

hello folks, I'm trying to run 2 different dimensional vectors by using weighted regions with a chosen factor. can I get some expert opinion on identify the error,please. your help is gratefully appreciated.Many thanks in advance.

   x=train_data; % 882 x2 double
  z=test_data;  %882 x 8 double
  distance_max=[];
for h=1:size(x)    
 for kb=1:size(z)
        kk=x(:,h);
        gg=z(:,kb); <-- this is where the error appeared
weightsum=0;
ww  = [0, 1,1,1,1,1,0,0,1,1,1,1,1,0,1,1,2,1,2,1,1,2,4,4,0,4,4,2,1,1,1,1,1,1,1,0,1,2,2,2,1,0,0,0,1,1,1,0,0];   
length=18;
region = size(x,1)/length; 
    for e=1:region
      e_start = (e -1) * length+1 ;
      e_end = e_start + length-1 ; 
     xpart=kk(e_start:e_end);   
     zpart = gg (e_start:e_end);
   D1 = pdist2(xpart',zpart','chisq')*ww(e);
   distance_max=[distance_max,D1];
  weightsum=weightsum+D1;
    end
  results(h,k)={weightsum};    
  end
 end

Answer 1

Please try changing the line

   for kb=1:size(y)

to the following:

   for kb=1:size(z)

Also, please correct the issue with size described in the answer provided by Adam.