传说 添加到Bokeh绘图中的图形可以交互,这样单击或点击图例条目将隐藏或禁用绘图中相应的字形。这些模式通过设置 click_policy 属性 Legend 要么 "hide" 或 "mute" .
click_policy
Legend
"hide"
"mute"
注解
交互式图例仅适用于“每字形”图例。分组图例尚不支持下面描述的功能。
有时,通过单击 Legend . 在Bokeh,这可以通过设置图例来实现 click_policy 属性到 "hide" 如下图所示:
import pandas as pd from bokeh.palettes import Spectral4 from bokeh.plotting import figure, output_file, show from bokeh.sampledata.stocks import AAPL, GOOG, IBM, MSFT p = figure(plot_width=800, plot_height=250, x_axis_type="datetime") p.title.text = 'Click on legend entries to hide the corresponding lines' for data, name, color in zip([AAPL, IBM, MSFT, GOOG], ["AAPL", "IBM", "MSFT", "GOOG"], Spectral4): df = pd.DataFrame(data) df['date'] = pd.to_datetime(df['date']) p.line(df['date'], df['close'], line_width=2, color=color, alpha=0.8, legend_label=name) p.legend.location = "top_left" p.legend.click_policy="hide" output_file("interactive_legend.html", title="interactive_legend.py example") show(p)
其他时候,图例交互最好将字形静音,而不是完全隐藏它。在这种情况下,设置 click_policy 属性到 "mute" . 此外,还需要指定“静音glyph”的视觉属性。一般来说,这与 选定和未选定图示符 或 悬停检查 . 在下面的例子中, muted_alpha=0.2 和 muted_color=color 被传递给 circle 指定应使用低alpha静音图示符绘制静音线。
muted_alpha=0.2
muted_color=color
circle
import pandas as pd from bokeh.palettes import Spectral4 from bokeh.plotting import figure, show from bokeh.sampledata.stocks import AAPL, GOOG, IBM, MSFT p = figure(plot_width=800, plot_height=250, x_axis_type="datetime") p.title.text = 'Click on legend entries to mute the corresponding lines' for data, name, color in zip([AAPL, IBM, MSFT, GOOG], ["AAPL", "IBM", "MSFT", "GOOG"], Spectral4): df = pd.DataFrame(data) df['date'] = pd.to_datetime(df['date']) p.line(df['date'], df['close'], line_width=2, color=color, alpha=0.8, muted_color=color, muted_alpha=0.2, legend_label=name) p.legend.location = "top_left" p.legend.click_policy="mute" show(p)