helderiv - helix derivative filter
Initializer: call helderiv_init(n1,na)
Operator : ierr=helderiv_lop(adj,add,pp,qq)
Close : call helderiv_close()
number of samples in n1
number of coefs for filter
wheter or not run the adjoint
whether or not to add outout to data
real(:)
model
real(:)
data
Create and apply a helix derivative filter
the lapfac manpage, the helicon manpage
geef90