text: from PyQt5.QtGui import *
  from electrum_rby.i18n import _
  
  
  import datetime
  from collections import defaultdict
  
  from electrum_rby.util import format_satoshis
  from electrum_rby.bitcoin import COIN
  
  import matplotlib
  matplotlib.use('Qt5Agg')
  import matplotlib.pyplot as plt
  import matplotlib.dates as md
  from matplotlib.patches import Ellipse
  from matplotlib.offsetbox import AnchoredOffsetbox, TextArea, DrawingArea, HPacker
  
  
  def plot_history(wallet, history):
      hist_in = defaultdict(int)
      hist_out = defaultdict(int)
      for item in history:
          tx_hash, height, confirmations, timestamp, value, balance = item
          if not confirmations:
              continue
          if timestamp is None:
              continue
          value = value*1./COIN
          date = datetime.datetime.fromtimestamp(timestamp)
          datenum = int(md.date2num(datetime.date(date.year, date.month, 1)))
          if value > 0:
              hist_in[datenum] += value
          else:
              hist_out[datenum] -= value
  
      f, axarr = plt.subplots(2, sharex=True)
      plt.subplots_adjust(bottom=0.2)
      plt.xticks( rotation=25 )
      ax = plt.gca()
      plt.ylabel('RBY')
      plt.xlabel('Month')
      xfmt = md.DateFormatter('%Y-%m-%d')
      ax.xaxis.set_major_formatter(xfmt)
      axarr[0].set_title('Monthly Volume')
      xfmt = md.DateFormatter('%Y-%m')
      ax.xaxis.set_major_formatter(xfmt)
      width = 20
      dates, values = zip(*sorted(hist_in.items()))
      r1 = axarr[0].bar(dates, values, width, label='incoming')
      axarr[0].legend(loc='upper left')
      dates, values = zip(*sorted(hist_out.items()))
      r2 = axarr[1].bar(dates, values, width, color='r', label='outgoing')
      axarr[1].legend(loc='upper left')
      return plt
  