MATLAB: Assign vector to vector with gaps

matrixvector

Stuff doesn't matter – was tired – start reading at Edit1 – sry
Hello,
I have a matrix of row size m and a matrix of row size n where m > n and x = m – n. I also got a vector k of length x with different row indices of m. Now I want to assign n to m by not touching entries m(k) important is that these rows stay unchanged and in place.
Is there an easy one-liner? like:
m(m ~= x) = n;
or
m(m ~= m(x)) = n;
but seems not to work 🙁
Hope you can help me.
Thanks in advance.
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HERE!:-> @Edit1: Oh, uff was late yesterday and yeah what ever I wrote there is pretty confusing and wrong… so again:
Matrix A of size m * _ where m is the number of rows and matrix B of size n * _ where n is the number of rows. Still true is: m > n and x = m – n and V is a vector with x rows.
Example:
A = [1,1,1; 2,2,1; 3,3,4; 8,3,6; 8,3,0; 8,6,3];
B = [4,2,5; 4,3,2; 6,3,2; 8,0,9];
V = [2; 4];
Result in A:
A = [4,2,5; 2,2,1; 4,3,2; 8,3,6; 6,3,2; 8,0,9];
just for much bigger matrices. Sorry for my unclear post yesterday hope you are still willing to help me.

Best Answer

 A = [1,1,1; 2,2,1; 3,3,4; 8,3,6; 8,3,0; 8,6,3];
 B = [4,2,5; 4,3,2; 6,3,2; 8,0,9];
 V = [2; 4];
 % create 'inversion' of V (there may be better ways) 
 notV = 1:size(A,1);  % vector from 1 to number of rows
 notV(V) = [];  % delete rows which are in V
 % over write the rows that are not in V
 A(notV,:)=B
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