blimpy/filterbank.py
def _setup_freqs(self, f_start=None, f_stop=None):
        """ Setup frequency axis """
        ## Setup frequency axis
        f0 = self.header[b'fch1']
        f_delt = self.header[b'foff']

        i_start, i_stop = 0, self.header[b'nchans']
        if f_start:
            i_start = int((f_start - f0) / f_delt)
        if f_stop:
            i_stop  = int((f_stop - f0)  / f_delt)

        #calculate closest true index value
        chan_start_idx = np.int(i_start)
        chan_stop_idx  = np.int(i_stop)

        #create freq array
        if i_start < i_stop:
            i_vals = np.arange(chan_start_idx, chan_stop_idx)
        else:
            i_vals = np.arange(chan_stop_idx, chan_start_idx)

        self.freqs = f_delt * i_vals + f0

#         if f_delt < 0:
#             self.freqs = self.freqs[::-1]

        if chan_stop_idx < chan_start_idx:
            chan_stop_idx, chan_start_idx = chan_start_idx,chan_stop_idx

        return i_start, i_stop, chan_start_idx, chan_stop_idx
def _setup_freqs(self, f_start=None, f_stop=None):
        ## Setup frequency axis
        f0 = self.header[b'fch1']
        f_delt = self.header[b'foff']

        i_start, i_stop = 0, self.header[b'nchans']
        if f_start:
            i_start = int((f_start - f0) / f_delt)
        if f_stop:
            i_stop  = int((f_stop - f0)  / f_delt)

        #calculate closest true index value
        chan_start_idx = np.int(i_start)
        chan_stop_idx  = np.int(i_stop)

        #create freq array
        if i_start < i_stop:
            i_vals = np.arange(chan_start_idx, chan_stop_idx)
        else:
            i_vals = np.arange(chan_stop_idx, chan_start_idx)

        self.freqs = f_delt * i_vals + f0

#         if f_delt < 0:
#             self.freqs = self.freqs[::-1]

        if chan_stop_idx < chan_start_idx:
            chan_stop_idx, chan_start_idx = chan_start_idx,chan_stop_idx

        return i_start, i_stop, chan_start_idx, chan_stop_idx
def _setup_freqs ( self , f_start = None , f_stop = None ) : ## Setup frequency axis f0 = self . header [ b'fch1' ] f_delt = self . header [ b'foff' ] i_start , i_stop = 0 , self . header [ b'nchans' ] if f_start : i_start = int ( ( f_start - f0 ) / f_delt ) if f_stop : i_stop = int ( ( f_stop - f0 ) / f_delt ) #calculate closest true index value chan_start_idx = np . int ( i_start ) chan_stop_idx = np . int ( i_stop ) #create freq array if i_start < i_stop : i_vals = np . arange ( chan_start_idx , chan_stop_idx ) else : i_vals = np . arange ( chan_stop_idx , chan_start_idx ) self . freqs = f_delt * i_vals + f0 #         if f_delt < 0: #             self.freqs = self.freqs[::-1] if chan_stop_idx < chan_start_idx : chan_stop_idx , chan_start_idx = chan_start_idx , chan_stop_idx return i_start , i_stop , chan_start_idx , chan_stop_idx
Setup frequency axis
Setup frequency axis