https://github.com/cran/pracma
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Tip revision: 39aca747f500f69985711f7ae5e9969f93ecc860 authored by Hans W. Borchers on 21 June 2017, 07:52:27 UTC
version 2.0.7
Tip revision: 39aca74
subspace.R
##
##  s u b s p a c e . r  Test suite
##


orth <- pracma::orth
subspace <- pracma::subspace

is.null(orth(c()))
M <- matrix(1:12, 3, 4)
all.equal(orth(M),
          matrix(c(-0.504533, -0.760776,
                   -0.574516, -0.057141,
                   -0.644497,  0.646495), 3, 2, byrow = TRUE),
          tolerance = 1e-5)

H <- pracma::hadamard(8)
A <- H[, 2:4]
B <- H[, 5:8]
all.equal(subspace(A, B), pi/2, tolerance = 1e-10)  
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