Spot operator: opRestriction Spot Home Page
opRestriction
 opRestriction   Restriction operator.
 
    opRestriction(N,IDX) creates a restriction operator that selects
    the entries listed in the index vector IDX from an input vector of
    length N. The adjoint of the operator creates a zero vector of
    length N and fills the entries given by IDX with the input data.
 
    Algebraically, opRestriction(N,IDX) is equivalent to a matrix of
    size length(IDX)-by-N, where row i has a single 1 in column
    IDX(i).
See also