def METHOD_NAME(self):
    self.sp_f = self.fig.add_subplot(
        2, 1, 1, position=[0.075, 0.2, 0.875, 0.6])
    self.sp_f.set_title(
        ("Amplitude"), fontsize=self.title_font_size, fontweight="bold")
    self.sp_f.set_xlabel(
        "Time (s)", fontsize=self.label_font_size, fontweight="bold")
    self.sp_f.set_ylabel(
        "Amplitude (V)", fontsize=self.label_font_size, fontweight="bold")
    self.plot_f = list()
    maxval = -1e12
    minval = 1e12
    for hf in self.hfile:
        # if specified on the command-line, set file pointer
        hf.seek(self.sizeof_data * self.start, 1)
        self.get_data(hf)
        # Subplot for real and imaginary parts of signal
        self.plot_f += plot(self.time, self.f, 'o-')
        maxval = max(maxval, self.f.max())
        minval = min(minval, self.f.min())
    self.sp_f.set_ylim([1.5 * minval, 1.5 * maxval])
    self.leg = self.sp_f.legend(self.plot_f, self.legend_text)
    draw()