NAME

createnhelix - create non stationary helix filter


SYNOPSIS

aa=createnhelix(nd,center,gap,na,patch)


INPUT PARAMETERS

nd - integer(:)
      size of data
center - integer(:)
      location of the 1 of the filter within na box
gap - integer(:)
      distance along each axis before filter coef
na - integer(:)
      size of box arround filter
patch - integer(:)
      what model point a given filter will act on


RETURN VALUE

aa - type(nfilter)
      Helix filter


DESCRIPTION

Create a non-stationary helix filter


SEE ALSO

the createhelix manpage,the nhelix manpage,the createmshelix manpage


LIBRARY

geef90