Added extra plot on app example

README.md

@@ -168,6 +168,7 @@ In chartpy/examples you will find several demos
 
 * 06 May 2021
  * Fixed subplots with plotly
+ * Added realized vol to dashboard example
 * 05 May 2021
  * Add simple dashboard example for downloading Quandl data
 * 04 May 2021

chartpy_examples/dashboard_examples/layoutchart.py

@@ -14,6 +14,7 @@
 
 import pandas as pd
 import datetime
+import math
 
 import quandl
 
@@ -37,7 +38,8 @@ def __init__(self, app=None, constants=None, quandl_api_key=None):
  def attach_callbacks(self):
 
  output = self._callback_manager.output_callback(self.page_id(),
- ['quandl-fig',
+ ['spot-fig',
+ 'vol-fig',
  'msg-status'])
  input = self._callback_manager.input_callback(self.page_id(), 'calculate-button')
  state = self._callback_manager.state_callback(self.page_id(), ['ticker-val'])
@@ -53,9 +55,17 @@ def calculate_button(self, *args):
  try:
  df = pd.DataFrame(quandl.get(ticker))
 
- return Chart(engine="plotly").plot(df,
- style=Style(plotly_plot_mode='dash', width=980, height=480, scale_factor=-1)), \
- "Plotted " + ticker + " at " + datetime.datetime.utcnow().strftime("%b %d %Y %H:%M:%S")
+ df_vol = (df / df.shift(1)).rolling(window=20).std()* math.sqrt(252) * 100.0
+
+ spot_fig = Chart(engine="plotly").plot(df,
+ style=Style(title='Spot', plotly_plot_mode='dash', width=980, height=480, scale_factor=-1))
+
+ vol_fig = Chart(engine="plotly").plot(df_vol,
+ style=Style(title='Realized Vol 1M', plotly_plot_mode='dash', width=980,
+ height=480, scale_factor=-1))
+ msg = "Plotted " + ticker + " at " + datetime.datetime.utcnow().strftime("%b %d %Y %H:%M:%S")
+
+ return spot_fig, vol_fig, msg
  except Exception as e:
  print(str(e))
  pass
@@ -90,7 +100,7 @@ def construct_layout(self):
 
  self._sc.horizontal_bar(),
 
- self._sc.plot("Quandl Plot", id=['quandl-fig'], prefix_id=self.page_id(), height=500),
+ self._sc.plot("Quandl Plot", id=['spot-fig', 'vol-fig'], prefix_id=self.page_id(), height=500),
  ]
  )