能够交互显示和隐藏散景图中的线条会很好。说,我创建了这样的情节:

from bokeh.plotting import output_file, figure, show
from numpy.random import normal, uniform

meas_data_1 = normal(0, 1, 100)
meas_data_2 = uniform(-0.5, 0.5, 100)

output_file("myplot.html", title="My plot")
fig = figure(width=500, plot_height=500)

fig.line(x=range(0, len(meas_data_1)), y=meas_data_1)
fig.line(x=range(0, len(meas_data_2)), y=meas_data_2)

show(fig)

如何增加以交互方式启用/禁用这两行之一的可能性?

我知道这在愿望 list 中(请参阅this feature request),但这听起来好像实现得太早了。

我的印象是,使用CheckBoxGroupself-defined callback应该可以实现,但不幸的是,此回调必须使用JavaScript编写,我对此绝对没有经验。

最佳答案

编辑:现在,从Bokeh 0.12.5开始,交互式图例已内置到库中,请参见https://bokeh.github.io/blog/2017/4/5/release-0-12-5/

这似乎有望在某些时候实现为交互式图例:
https://github.com/bokeh/bokeh/issues/3715

当前(v0.12.1),有一个示例在复选框上使用CustomJS来实现此目的:
https://github.com/bokeh/bokeh/pull/4868

相关代码:

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, 1, 2], width=100)
checkbox.callback = CustomJS(args=dict(l0=l0, l1=l1, l2=l2, checkbox=checkbox),
                             lang="coffeescript", 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)

关于javascript - 如何交互显示和隐藏散景图中的线?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/32253900/

10-16 03:29