bqplot - 在情节外打勾

bqplot - Tick placement outside of plot

我正在尝试将 x 轴刻度线放在图的外面,而不是从 x 轴开始,如下所示。关于如何实现这一点,您有什么建议吗?

我的绘图位代码:

x_data = df_ts.columns.values.tolist()
y_end = df_ts.loc[end_date, :].values.flatten()
y_start = df_ts.loc[start_date, :].values.flatten()

x_sc = OrdinalScale()
y_sc = LinearScale()
ax_x = Axis(label='RIC', scale=x_sc, grid_lines='solid', tick_rotate=90)
ax_y = Axis(label='%', scale=y_sc, orientation='vertical',tick_format='0.2f')

line = Lines(x=x_data, y=[y_end, y_start], scales={'x': x_sc, 'y': y_sc}, 
             display_legend=True, labels=[end_date, start_date], stroke_width=1)
bar = Bars(x=x_data, y=df_diff.tolist(), scales={'x': x_sc, 'y': y_sc}, padding=0.5)

fig = Figure(marks=[line, bar], axes=[ax_x, ax_y], title='Swap rates and differences', legend_location='top-left')
display(fig)

结果:

我找到了一种方法,通过更改变量 ax_x 的两个内容来实现。

  1. 通过添加 tick_style={'font-size': 7} 来减小字体大小。
  2. 添加offset={'scale':x_sc, 'value':10}.

新代码如下所示:

x_data = df_ts.columns.values.tolist()
y_end = df_ts.loc[end_date, :].values.flatten()
y_start = df_ts.loc[start_date, :].values.flatten()

x_sc = OrdinalScale()
y_sc = LinearScale()
ax_x = Axis(label='RIC', scale=x_sc, grid_lines='solid', tick_rotate=90, tick_style={'font-size': 7}, label_offset='40',
           offset={'scale':x_sc, 'value':10})
ax_y = Axis(label='%', scale=y_sc, orientation='vertical',tick_format='0.2f', label_offset='-40')

line = Lines(x=x_data, y=[y_end, y_start], scales={'x': x_sc, 'y': y_sc}, 
             display_legend=True, labels=[end_date, start_date], stroke_width=1)
bar = Bars(x=x_data, y=df_diff.tolist(), scales={'x': x_sc, 'y': y_sc}, padding=0.5)

fig = Figure(marks=[line, bar], axes=[ax_x, ax_y], title='Swap rates and differences', legend_location='top-left')
display(fig)

它显示为: Results