'Plot two lines of the absolute amounts of contributed and consumed bytes.'

def plot_absolute_values(self):

    plot_data = [[[], []], []]
    for block in self.blocks:
        plot_data[1].append(datetime.datetime.strptime(block['insert_time'], '%Y-%m-%d    %H:%M:%S'))
        plot_data[0][0].append((block['total_up'] / self.byte_scale))
        plot_data[0][1].append((block['total_down'] / self.byte_scale))
    if (len(self.blocks) == 0):
        plot_data = [[[0], [0]], [datetime.datetime.now()]]
    self.trust_plot.plot_data = plot_data
    self.trust_plot.compute_initial_figure()
