Scilab Function
Last update : 18/05/2014
proj - projection
Calling Sequence
- P = proj(X1,X2)
Parameters
-
X1,X2: two real matrices with equal number of columns
-
P: real projection matrix (P^2=P)
Description
P is the projection on X2 parallel to X1.
Examples
X1=rand(5,2);X2=rand(5,3);
P=proj(X1,X2);
norm(P^2-P,1)
trace(P) // This is dim(X2)
[Q,M]=fullrf(P);
svd([Q,X2]) // span(Q) = span(X2)
See Also
projspec, orth, fullrf,
Author
F. D.; ;