我使用以下脚本使用checkboxGroup绘制多行。 我的散景版本是0.12.7
我看到的唯一问题是它将每一行都显示为默认值，而只检查了两个框（我希望看到两个线条而不是全部三个）。
有没有办法只显示那些活动的（l0和l2）作为默认值？
import numpy as np
from bokeh.io import output_file, show
from bokeh.layouts import row
from bokeh.palettes import Viridis3
from bokeh.plotting import figure
from bokeh.models import CheckboxGroup, CustomJS
output_file("line_on_off.html", title="line_on_off.py example")
p = figure()
props = dict(line_width=4, line_alpha=0.7)
x = np.linspace(0, 4 * np.pi, 100)
l0 = p.line(x, np.sin(x), color=Viridis3[0], legend="Line 0", **props)
l1 = p.line(x, 4 * np.cos(x), color=Viridis3[1], legend="Line 1", **props)
l2 = p.line(x, np.tan(x), color=Viridis3[2], legend="Line 2", **props)
checkbox = CheckboxGroup(labels=["Line 0", "Line 1", "Line 2"],
active=[0, 2], width=100)
checkbox.callback = CustomJS.from_coffeescript(args=dict(l0=l0, l1=l1, l2=l2, checkbox=checkbox), code="""
l0.visible = 0 in checkbox.active;
l1.visible = 1 in checkbox.active;
l2.visible = 2 in checkbox.active;
""")
layout = row(checkbox, p)
show(layout)
答案 0 :(得分：1)
CustomJS代码仅在单击复选框时才会运行。因此，如果您希望某些行默认不可见，则必须自己设置：
import numpy as np
from bokeh.io import output_file, show
from bokeh.layouts import row
from bokeh.palettes import Viridis3
from bokeh.plotting import figure
from bokeh.models import CheckboxGroup, CustomJS
output_file("line_on_off.html", title="line_on_off.py example")
p = figure()
props = dict(line_width=4, line_alpha=0.7)
x = np.linspace(0, 4 * np.pi, 100)
l0 = p.line(x, np.sin(x), color=Viridis3[0], legend="Line 0", **props)
l1 = p.line(x, 4 * np.cos(x), color=Viridis3[1], legend="Line 1", **props)
l1.visible = False # NEW
l2 = p.line(x, np.tan(x), color=Viridis3[2], legend="Line 2", **props)
checkbox = CheckboxGroup(labels=["Line 0", "Line 1", "Line 2"],
active=[0, 2], width=100)
checkbox.callback = CustomJS.from_coffeescript(args=dict(l0=l0, l1=l1, l2=l2, checkbox=checkbox), code="""
l0.visible = 0 in checkbox.active;
l1.visible = 1 in checkbox.active;
l2.visible = 2 in checkbox.active;
""")
layout = row(checkbox, p)
show(layout)
但是，请注意，这些都不是必需的。 Bokeh有一个内置的交互式图例，可以在没有任何JS的情况下隐藏/显示/静音不同的字形：