The for loop does not give the result I want.

DNdog =

       7
       7
       7
      11
      11
      11

blnmynokta =

      11
      11
      11

ksnkoor =

       4
       4
       4
       7
       7
       7

for i = 1:length(DNdog)
    for j = 1:(length(blnmynokta))
        if (DNdog(i) == ksnkoor(j))
            A(i,j) = [0]
        elseif (DNdog(i) == blnmynokta(j)) 
             A(j,j) = [-1]
        end
    end
end

Formed matrix:
A =

    -1     0     0
     0    -1     0
     0     0    -1

    The matrix I want to form:
  A=
       0     0     0
       0     0     0
       0     0     0
      -1     0     0
       0    -1     0
       0     0    -1

I do not understand where I made mistakes. Can you help me?

Answer 1

[GEEVARGHESE TITUS]

The index of A was wrong

clc
clear all
close all
DNdog =[7;7;7;11;11;11];
blnmynokta =[11;11;11]
ksnkoor =[4;4;4;7;7;7]
      for i = 1:length(DNdog)
    for j = 1:(length(blnmynokta))
        if (DNdog(i) == ksnkoor(j))
            A(i,j) = [0]
        elseif (DNdog(i) == blnmynokta(j)) 
             A(i,j) = [-1]
        end
    end
end

[Muhendisleksi]

Wrong result:

A =

       0     0     0
       0     0     0
       0     0     0
      -1    -1    -1
      -1    -1    -1
      -1    -1    -1