input: [2] gcompute freq ASGinterpolation [1] 
output: direct freq FWTinterpolation
options: s p i n n i n g
options: d i r e c t
options: d i r e c t f r e q
options: d i r e c t f r e q A S G i n t e r p o l a t i o n
options: d i r e c t f r e q F W T i n t e r p o l a t i o n
options: d i r e c t f r e q F W T A S G i n t e r p o l a t i o n