blimpy/filterbank.py
def plot_spectrum_min_max(self, t=0, f_start=None, f_stop=None, logged=False, if_id=0, c=None, **kwargs):
        """ Plot frequency spectrum of a given file

        Args:
            logged (bool): Plot in linear (False) or dB units (True)
            if_id (int): IF identification (if multiple IF signals in file)
            c: color for line
            kwargs: keyword args to be passed to matplotlib plot()
        """
        ax = plt.gca()

        plot_f, plot_data = self.grab_data(f_start, f_stop, if_id)

        #Using accending frequency for all plots.
        if self.header[b'foff'] < 0:
            plot_data = plot_data[..., ::-1] # Reverse data
            plot_f = plot_f[::-1]

        fig_max = plot_data[0].max()
        fig_min = plot_data[0].min()

        print("averaging along time axis...")

        #Since the data has been squeezed, the axis for time goes away if only one bin, causing a bug with axis=1
        if len(plot_data.shape) > 1:
            plot_max = plot_data.max(axis=0)
            plot_min = plot_data.min(axis=0)
            plot_data = plot_data.mean(axis=0)
        else:
            plot_max = plot_data.max()
            plot_min = plot_data.min()
            plot_data = plot_data.mean()

        # Rebin to max number of points
        dec_fac_x = 1
        MAX_PLT_POINTS = 8*64  # Low resoluition to see the difference.
        if plot_data.shape[0] > MAX_PLT_POINTS:
            dec_fac_x = int(plot_data.shape[0] / MAX_PLT_POINTS)

        plot_data = rebin(plot_data, dec_fac_x, 1)
        plot_min = rebin(plot_min, dec_fac_x, 1)
        plot_max = rebin(plot_max, dec_fac_x, 1)
        plot_f    = rebin(plot_f, dec_fac_x, 1)

        if logged:
            plt.plot(plot_f, db(plot_data), "#333333", label='mean', **kwargs)
            plt.plot(plot_f, db(plot_max),  "#e74c3c", label='max', **kwargs)
            plt.plot(plot_f, db(plot_min),  '#3b5b92', label='min', **kwargs)
            plt.ylabel("Power [dB]")
        else:
            plt.plot(plot_f, plot_data,  "#333333", label='mean', **kwargs)
            plt.plot(plot_f, plot_max,   "#e74c3c", label='max', **kwargs)
            plt.plot(plot_f, plot_min,   '#3b5b92', label='min', **kwargs)
            plt.ylabel("Power [counts]")
        plt.xlabel("Frequency [MHz]")
        plt.legend()

        try:
            plt.title(self.header[b'source_name'])
        except KeyError:
            plt.title(self.filename)

        plt.xlim(plot_f[0], plot_f[-1])
        if logged:
            plt.ylim(db(fig_min),db(fig_max))
def plot_spectrum_min_max(self, t=0, f_start=None, f_stop=None, logged=False, if_id=0, c=None, **kwargs):
        """ Plot frequency spectrum of a given file

        Args:
            logged (bool): Plot in linear (False) or dB units (True)
            if_id (int): IF identification (if multiple IF signals in file)
            c: color for line
            kwargs: keyword args to be passed to matplotlib plot()
        """
        ax = plt.gca()

        plot_f, plot_data = self.grab_data(f_start, f_stop, if_id)

        #Using accending frequency for all plots.
        if self.header[b'foff'] < 0:
            plot_data = plot_data[..., ::-1] # Reverse data
            plot_f = plot_f[::-1]

        fig_max = plot_data[0].max()
        fig_min = plot_data[0].min()

        print("averaging along time axis...")

        #Since the data has been squeezed, the axis for time goes away if only one bin, causing a bug with axis=1
        if len(plot_data.shape) > 1:
            plot_max = plot_data.max(axis=0)
            plot_min = plot_data.min(axis=0)
            plot_data = plot_data.mean(axis=0)
        else:
            plot_max = plot_data.max()
            plot_min = plot_data.min()
            plot_data = plot_data.mean()

        # Rebin to max number of points
        dec_fac_x = 1
        MAX_PLT_POINTS = 8*64  # Low resoluition to see the difference.
        if plot_data.shape[0] > MAX_PLT_POINTS:
            dec_fac_x = int(plot_data.shape[0] / MAX_PLT_POINTS)

        plot_data = rebin(plot_data, dec_fac_x, 1)
        plot_min = rebin(plot_min, dec_fac_x, 1)
        plot_max = rebin(plot_max, dec_fac_x, 1)
        plot_f    = rebin(plot_f, dec_fac_x, 1)

        if logged:
            plt.plot(plot_f, db(plot_data), "#333333", label='mean', **kwargs)
            plt.plot(plot_f, db(plot_max),  "#e74c3c", label='max', **kwargs)
            plt.plot(plot_f, db(plot_min),  '#3b5b92', label='min', **kwargs)
            plt.ylabel("Power [dB]")
        else:
            plt.plot(plot_f, plot_data,  "#333333", label='mean', **kwargs)
            plt.plot(plot_f, plot_max,   "#e74c3c", label='max', **kwargs)
            plt.plot(plot_f, plot_min,   '#3b5b92', label='min', **kwargs)
            plt.ylabel("Power [counts]")
        plt.xlabel("Frequency [MHz]")
        plt.legend()

        try:
            plt.title(self.header[b'source_name'])
        except KeyError:
            plt.title(self.filename)

        plt.xlim(plot_f[0], plot_f[-1])
        if logged:
            plt.ylim(db(fig_min),db(fig_max))
Plot frequency spectrum of a given file

        Args:
            logged (bool): Plot in linear (False) or dB units (True)
            if_id (int): IF identification (if multiple IF signals in file)
            c: color for line
            kwargs: keyword args to be passed to matplotlib plot()