Sometimes diagram may appear if I run the cell again. Sometimes not. Diagrams are definitely not rendered on Run all cells. The size of the diagram seems to be completely random. Most of the time it does not work.
It seems that render success only around 1/4 of time.
Environment
I tested 2x2 different Jupyter Notebook environments
Both Firefox and Chrome web browsers
Google Colab and locally running Jupyter Server on macOS
Making sure "Trusted Notebook" is on (see in the screenshots above)
Other
Other plots are rendered without problem, e.g. ones at the start of the notebook
This seems to be an underlying matplotlib library issue and affects vanilla Backtrader too. I spend some hours trying to figure out what is causing this and if it could be worked around by, for example, by forcing diagrams to be inline static PNg images. There is something in the Backtrader diagram, especially the backtest result, which causes Jupyter Notebook to choke.
Problem description
fastquant fails to render
backtest()result chartExample
Running Lesson 2 Notebook on Google Colab here:
https://colab.research.google.com/github/enzoampil/fastquant-blog/blob/master/_notebooks/2020-03-09-lesson2-backtest-your-trading-strategy.ipynb
Expected behavior
I get a diagram for
backtestfunction call resultActual behavior
There is no diagram
Sometimes diagram may appear if I run the cell again. Sometimes not. Diagrams are definitely not rendered on Run all cells. The size of the diagram seems to be completely random. Most of the time it does not work.
It seems that render success only around 1/4 of time.
Environment
I tested 2x2 different Jupyter Notebook environments
Both Firefox and Chrome web browsers
Google Colab and locally running Jupyter Server on macOS
Making sure "Trusted Notebook" is on (see in the screenshots above)
Other
Other plots are rendered without problem, e.g. ones at the start of the notebook
This seems to be an underlying
matplotliblibrary issue and affects vanilla Backtrader too. I spend some hours trying to figure out what is causing this and if it could be worked around by, for example, by forcing diagrams to be inline static PNg images. There is something in the Backtrader diagram, especially the backtest result, which causes Jupyter Notebook to choke.I did not find any solution.