I have 2 Matrixes A and B both of size (n,2)
I want as in Matlab with using vecnorm(A-B,2,2), to get the norm of each row in a matrix (n*1)
for example
A = [ 1 2 ; 3 4]
B = [3 4 ; 2 1]
A - B = [-2 -2 ; -1 -3]
I want to get This:
ans =
2.8284
3.1623
How can I represent this in CVX?
please guide me
Thanks very much
norms(A-B,2,2)
help norms
norms Computation of multiple vector norms.
norms( X ) provides a means to compute the norms of multiple vectors
packed into a matrix or N-D array. This is useful for performing
max-of-norms or sum-of-norms calculations.All of the vector norms, including the false "-inf" norm, supported by NORM() have been implemented in the norms() command. norms(X,P) = sum(abs(X).^P).^(1/P) norms(X) = norms(X,2). norms(X,inf) = max(abs(X)). norms(X,-inf) = min(abs(X)). If X is a vector, these computations are completely identical to their NORM equivalents. If X is a matrix, a row vector is returned of the norms of each column of X. If X is an N-D matrix, the norms are computed along the first non-singleton dimension. norms( X, [], DIM ) or norms( X, 2, DIM ) computes Euclidean norms along the dimension DIM. norms( X, P, DIM ) computes its norms along the dimension DIM. Disciplined convex programming information: norms is convex, except when P<1, so an error will result if these non-convex "norms" are used within CVX expressions. norms is nonmonotonic, so its input must be affine.
excuse me, another question:
are these statements the same in CVX?
isequal(R >= eta , ones (K,1));
and
R >= eta
