multicursor examples; issue #303

Author: DanielGoldfarb

examples/scratch_pad/multicursor.py

@@ -0,0 +1,18 @@
+import numpy as np
+import matplotlib.pyplot as plt
+from matplotlib.widgets import MultiCursor
+
+print('1')
+t = np.arange(0.0, 2.0, 0.01)
+s1 = np.sin(2*np.pi*t)
+s2 = np.sin(4*np.pi*t)
+
+print('2')
+fig, (ax1, ax2) = plt.subplots(2, sharex=True)
+ax1.plot(t, s1)
+ax2.plot(t, s2)
+
+print('3')
+multi = MultiCursor(fig.canvas, (ax1, ax2), color='lime', lw=1, horizOn=True, vertOn=True)
+print('4')
+plt.show()

examples/scratch_pad/multicursor_macd.py

@@ -0,0 +1,29 @@
+import pandas as pd
+import mplfinance as mpf
+from matplotlib.widgets import MultiCursor
+
+idf = pd.read_csv('../data/SPY_20110701_20120630_Bollinger.csv',index_col=0,parse_dates=True)
+df  = idf.loc['2011-07-01':'2011-12-30',:]
+
+
+exp12 = df['Close'].ewm(span=12, adjust=False).mean()
+exp26 = df['Close'].ewm(span=26, adjust=False).mean()
+
+macd = exp12 - exp26
+
+signal    = macd.ewm(span=9, adjust=False).mean()
+histogram = macd - signal
+
+apds = [mpf.make_addplot(exp12,color='lime'),
+        mpf.make_addplot(exp26,color='c'),
+        mpf.make_addplot(histogram,type='bar',width=0.7,panel=1,
+                         color='dimgray',alpha=1,secondary_y=False),
+        mpf.make_addplot(macd,panel=1,color='fuchsia',secondary_y=True),
+        mpf.make_addplot(signal,panel=1,color='b',secondary_y=True),
+       ]
+
+fig, axlist = mpf.plot(df,type='candle',addplot=apds,figscale=1.1,figratio=(8,5),title='\nMACD',
+                       style='blueskies',volume=True,volume_panel=2,panel_ratios=(6,3,2),returnfig=True)
+
+multi = MultiCursor(fig.canvas, axlist, color='r',lw=1.2)
+mpf.show()