renamed the check method to check_sf; renamed some variables which were equal to object members; removed "interp" option from fft_bandpass because that needs to be done externally; fixed outdate call to assign, in fft_bandpass
renamed the check method to check_sf; renamed some variables which were equal to object members; removed "interp" option from fft_bandpass because that needs to be done externally; fixed outdate call to assign, in fft_bandpass

jgte/orb,jgte/orb,jgte/orb,jgte/orb,jgte/orb