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210 Chapter 6. Function Reference
Examples
A = random(3,3)-0.5*ones(3,3)?
A (a square matrix) =
0.0618661 0.0896177 0.185398
0.390622 0.00422128 -0.150638
-0.112622 0.42229 0.448818
blknorm(A,[1,1; 1,1; 1,1])
ans (a square matrix) =
0.0618661 0.0896177 0.185398
0.390622 0.00422128 0.150638
0.112622 0.42229 0.448818
blknorm(A,[3,3])
ans (a scalar) = 0.682429
# compare to the following:
max(svd(A))
ans (a scalar) = 0.682429
B = [1,2,3,4; 5,6,7,-8; 9,10,-11,12]?
B (a rectangular matrix) =
12 34
56 7-8
9 10 -11 12
blk = [2,1;1,1;1,1]
# examine 1,1 entry of blknorm result
blknorm(B,blk)
ans (a square matrix) =