I can not create a matrix.

K=[107 719.689 7969.933; 108 342.246 8404.180;23 638.765 8351.331]

KSNKOORD=[8351.311 638.790]

blnmynokta=[23]

YON_BLNM =[23;107;108]

for i = 1:length(YON_BLNM)
    for j = 1:(length(blnmynokta))
        if YON_BLNM(i) ~= blnmynokta(j)
                K1(i,2*j:3*j)= [K(i,2*j) K(i,3*j)]
            elseif YON_BLNM(i) == blnmynokta(j)
            K1(i,2*j:3*j) = [KSNKOORD(i,1) KSNKOORD(i,1)]
        end
    end
end

K1=[107 719.689 7969.933; 108 342.246 8404.180;23 638.790 8351.331]

The value in column 2 of line 3 of K1 must be changed. But it does not change. why?

Answer 1

[Andrei Bobrov]

K = [107 719.689 7969.933; 108 342.246 8404.180;23 638.765 8351.331];
KSNKOORD = [8351.311 638.790];
blnmynokta = 23;

K1 = K;
K1(K(:,1) == blnmynokta,2:end) = KSNKOORD;

[Muhendisleksi]

Thank you very much!