How to get a vectorized Matrix with conditions?

I am using matlab,the processing time is very big about three hours to four hours for each test. This is my code:

for a=1:6
for i= 1:16384
    for j= 1:16384

          if i==j
               MH(i,j)= V(i)+NV(i)*VP(a);
          else
                      %appartenance de j
          x=cp(j,1);
          y=cp(j,2);
          ii=-1;
          while ii<7
              ii=ii+2;
              iii=ii+1;
              if VI(i,ii)==x && VI(i,iii)==y
                  voisin=1;
              else
                  voisin= 0;
              end
           if voisin==1
                  MH(i,j)=VP(a);
           else MH(i,j)=0;
           end
          end

          end
      end
  end      
  end

Can you please help to get my matrix vectorized

How to get a matrix vectorized in matlab with conditions? - ResearchGate. Available from: https://www.researchgate.net/post/how_to_get_a_matrix_vectorized_in_matlab_with_conditions [accessed Dec 9, 2015].

[Torsten]

I can't believe this part of your code really does what you want.

ii=-1;
while ii<7
  ii=ii+2;
  iii=ii+1;
  if VI(i,ii)==x && VI(i,iii)==y
    voisin=1;
  else
    voisin= 0;
  end
  if voisin==1
    MH(i,j)=VP(a);
  else 
    MH(i,j)=0;
  end
end

Note that the value of MH(i,j) depends on the order (in ii) in which you check whether

VI(i,ii)==x && VI(i,ii+1)==y

Best wishes

Torsten.

[sarah]

Thank's a lot , I resolve my problem with another way simply.