MATLAB: Dot product of a column vector by its own elements

dot productfor loopmatrix manipulation

Hi, I have a matrix containing coordinates(x,y,z) and I am trying to find the dot product of the elements inside the vector. The matrix looks like this:
 %    a(x)     a(y)      a(z)        
   -0.0022   -0.0131    0.9999
 %    b(x)     b(y)      b(z)
   -0.8062    0.2794    0.5216
 %    c(x)     c(y)      c(z)
   -0.9325    0.0547   -0.3570
I want to achieve a dot product matrix of something like this:
   a.a    a.b    a.c
   b.a    b.b    b.c
   c.a    c.b    c.c
I tried writing a code
 Dot_P(1,1)= dot(matrix(1,:),matrix(1,:));
 Dot_P(1,2)= dot(matrix(1,:),matrix(2,:));
 Dot_P(1,3)= dot(matrix(1,:),matrix(3,:));
but this is hard coding and is not efficient, any help is appreciated!

Best Answer

With some guessing:
X = [-0.0022, -0.0131,  0.9999; ...
     -0.8062,  0.2794,  0.5216; ...
     -0.9325,  0.0547, -0.3570];
P = X * X.'
Now your "c" is X(1, :). Then e.g. P(3,3) equals c * c'.
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