统计指标绘图

通过matplotlib绘制4幅图：

• 资金曲线图

• 资金回撤图

• 每日盈亏图

• 每日盈亏分布图

    def show_chart(self, df: DataFrame = None):
        """"""
        if not df:
            df = self.daily_df
 
        if df is None:
            return
 
        plt.figure(figsize=(10, 16))
 
        balance_plot = plt.subplot(4, 1, 1)
        balance_plot.set_title("Balance")
        df["balance"].plot(legend=True)
 
        drawdown_plot = plt.subplot(4, 1, 2)
        drawdown_plot.set_title("Drawdown")
        drawdown_plot.fill_between(range(len(df)), df["drawdown"].values)
 
        pnl_plot = plt.subplot(4, 1, 3)
        pnl_plot.set_title("Daily Pnl")
        df["net_pnl"].plot(kind="bar", legend=False, grid=False, xticks=[])
 
        distribution_plot = plt.subplot(4, 1, 4)
        distribution_plot.set_title("Daily Pnl Distribution")
        df["net_pnl"].hist(bins=50)
 
        plt.show()