Typically called by manual_tour(). Creates a (p, d) orthonormal matrix,
the manipulation space from the given basis right concatenated with a zero
vector, with manip_var set to 1.
Usage
create_manip_space(basis, manip_var)
Arguments
basis
A (p, d) orthonormal matrix.
manip_var
Number of the column/dimension to rotate.
Value
A (p, d+1) orthonormal matrix, the manipulation space.