使用 Holoviews,如何设置标题?

Using Holoviews, how can I set a title?

我一直在尝试在使用 Holoviews 和 Bokeh 时设置标题。我将 3 个地块相互叠加。代码如下所示:

%%opts Curve [width=900 height=400  show_grid=True tools=['hover'] finalize_hooks=[apply_formatter]]
%%opts Curve (color=Cycle('Category20'))
%%opts Overlay [ legend_position='bottom' ] Curve (muted_alpha=0.5 muted_color='black' )

actual_curve = hv.Curve(df_reg_test, 'date', 'y', label='Actual')
existing_curve = hv.Curve(df_reg_test, 'date', 'Forecast Calls', label='Existing Forecast')
xgb_curve = hv.Curve(df_reg_test, 'date', 'xgb_pred', label='New Forecast')

actual_curve * existing_curve * xgb_curve

剧情是这样的:

如您所见,各个曲线的标签在图例中显示得很好,但我在图的顶部没有标题。

如何手动设置标题?

我发现我可以在覆盖选项中添加一个 title_format="my new title" 选项:

%%opts Curve [width=900 height=400  show_grid=True tools=['hover'] finalize_hooks=[apply_formatter]]
%%opts Curve (color=Cycle('Category20'))
%%opts Overlay [ legend_position='bottom' title_format="my new title"] Curve (muted_alpha=0.5 muted_color='black' )

actual_curve = hv.Curve(df_reg_test, 'date', 'y', label='Actual')
existing_curve = hv.Curve(df_reg_test, 'date', 'Forecast Calls', label='Existing Forecast')
xgb_curve = hv.Curve(df_reg_test, 'date', 'xgb_pred', label='New Forecast')

actual_curve * existing_curve * xgb_curve

现在我的情节有了一个标题:

另一种向叠加层添加通用标题的方法是使用:
opts.Overlay(title='New title for Overlay')

下面是在 Holoview 叠加图上设置标题的示例:

# import libraries
import numpy as np
import holoviews as hv
from holoviews import opts
hv.extension('bokeh')

# create some sample data
data1 = np.random.normal(size=[50, 2])
data2 = np.random.normal(size=[50, 2])

# create your overlay plot
all_plots = hv.Scatter(data1, label='data1') * hv.Scatter(data2, label='data2')

# add your title to your overlay with opts.Overlay()
all_plots.opts(opts.Overlay(title='New title for Overlay'))

结果图将如下所示: