Matlab, add vector to matrix

Question

I want to add a vector to an existing matrix.

Example:

matrix=[1 2 3
        4 5 6
        0 7 0]

vector = [7
          8]

So the target is to find the equal number of vector and matrix for example with:

ismember(matrix,vector)

After that the vector should insert into the matrix like the following:

matrix=[1 2 3
        4 5 6
        0 7 0
        0 8 0]

Answer 1

Instead of using ismember , you can better use find with two output arguments:

>> [row, col]=find(matrix==vector(1))
row =
     3
col =
     2

Using Matlab's automatic matrix expansion, and assuming the vector is a column vector (you can adjust the code accordingly):

>> matrix(row:(row+length(vector)-1),col) = vector
matrix =
     1     2     3
     4     5     6
     0     7     0
     0     8     0

If the match is not at the edge (ie, row~=size(matrix,1) ), this would not work though, as the vector would override other entries.