Pingback https://github.com/ricequant/rqalpha/issues/219
Hello, RQAlpha Team
RQAlpha is really a effective tool for price back-testing.
I found something wrong when using command `# rqalpha plot someresult.pkl` to plot my back-testing result. It came out a blank window. I tried to solve this problem and found something interesting.
in `rqalpha/rqalpha/mod/rqalpha_mod_sys_analyser/plot.py`, line 52-53
portfolio = result_dict["portfolio"]
benchmark_portfolio = result_dict.get("benchmark_portfolio")
print portfolio.index
print benchmark_portfolio.index
by printing portfolio.index and benchmark_portfolio.index , I found an unreasonable difference.
According to https://github.com/pandas-dev/pandas/issues/8614 says, matplotlib can not plotting when DatetimeIndex is created by pandas > 0.15 .
I found a temporary way to solve this problem. and finally plotting was working functionally.
Use `index.to_pydatetime()` to explicitly convert `DatetimeIndex` type index to Python `Datetime` type.
For example: modify `rqalpha/rqalpha/mod/rqalpha_mod_sys_analyser/plot.py`, line 152
`ax.plot(portfolio[“unit_net_value”] – 1.0, label=_(u”strategy”), alpha=1, linewidth=2, color=red)`
to
`ax.plot(index.to_pydatetime(),portfolio[“unit_net_value”] – 1.0, label=_(u”strategy”), alpha=1, linewidth=2, color=red)`
Although it is not the best way to solve this problem, I know you can find the best one finally.
And I hope these information may help you.
Thanks.