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Noba not only backtrader as a quantitative investment platform, but also visualized using bokeh, which can get richer plot effects. Additionally, Noba also provide 'Ioc Container', 'Event System', 'Database Abstraction Layer', 'Pipeline System' and more.

License: GNU General Public License v3.0

Python 99.07% Jinja 0.80% JavaScript 0.13%
backtrader bokeh investment-analysis quantitative-finance quantitative-investment quantitative-trading

noba's Issues

ERROR:bokeh.server.views.ws:Refusing websocket connection.

Hello! I got the following error in notebook. I tried both VS Code and Jupyter Notebook - same error.

Appreciate any solution!

ERROR:bokeh.server.views.ws:Refusing websocket connection from Origin 'vscode-webview://0lj9hh483va927cadklatiu5affjj5cn3b349he4cl71d36qc4p6/'; use --allow-websocket-origin=0lj9hh483va927cadklatiu5affjj5cn3b349he4cl71d36qc4p6 or set BOKEH_ALLOW_WS_ORIGIN=0lj9hh483va927cadklatiu5affjj5cn3b349he4cl71d36qc4p6 to permit this; currently we allow origins {'localhost:8889'} WARNING:tornado.access:403 GET /ws?id=348b26a3-e939-4e81-b383-da0df5147ff8&origin=bce4bbf1-101d-44db-883b-e3db4f31e0a2&swVersion=4&extensionId=&platform=electron&vscode-resource-base-authority=vscode-resource.vscode-cdn.net&parentOrigin=vscode-file%3A%2F%2Fvscode-app&purpose=notebookRenderer (::1) 18.06ms

Empty output (no graph) in Jupyter Lab

When running the sample:

from backtrader_bokeh import bt as bt_bokeh
plot = bt_bokeh.Bokeh()
cerebro.plot(plot, iplot=False)

there is nothing displayed in the Jupyter Lab cell output except: " BokehJS 2.4.3 successfully loaded."

Versions of packages:

  • backtrader-bokeh==0.8.9
  • bokeh==2.4.3
  • jupyter-bokeh==3.0.7
  • jupyter-lab: 3.4.8

Is there something else I may be missing?

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