散景：显示/隐藏图形的小部件

Question

希望沿着UI的界线做一些事情，例如：Bokeh: Using Checkbox widget to hide and show plots，其中我可以有选择地在图形栏中显示/隐藏整个图形。最好使用一个下拉菜单（具有多个选择的OptionMenu），在该菜单中我可以选择显示哪些图表（假设我可以命名这些数字）。

我对JS不熟悉，有什么指导吗？ （提前感谢）

我希望图像不再可见，下一个数字会像这样跳起来：

例如：

我在一列中有多个数字，生成为：

from bokeh.io import output_file, show
from bokeh.layouts import column
from bokeh.plotting import figure

output_file("layout.html")

x = list(range(11))
y0 = x
y1 = [10 - i for i in x]
y2 = [abs(i - 5) for i in x]

# create a new plot
s1 = figure(plot_width=250, plot_height=250, title=None)
s1.circle(x, y0, size=10, color="navy", alpha=0.5)

# create another one
s2 = figure(plot_width=250, plot_height=250, title=None)
s2.triangle(x, y1, size=10, color="firebrick", alpha=0.5)

# create and another
s3 = figure(plot_width=250, plot_height=250, title=None)
s3.square(x, y2, size=10, color="olive", alpha=0.5)

# put the results in a column and show
show(column(s1, s2, s3))

Answer 1

至少在0.13版本中，绘图没有visible切换。因此，您将不得不重置布局小部件的children值。我不太确定您打算通过下拉菜单进行哪种互动。这是带有复选框的完整示例：

from bokeh.io import output_file, show
from bokeh.layouts import column, row
from bokeh.plotting import figure
from bokeh.models import CheckboxGroup, CustomJS

output_file("layout.html")

x = list(range(11))
y0 = x
y1 = [10 - i for i in x]
y2 = [abs(i - 5) for i in x]

s1 = figure(plot_width=250, plot_height=250, title=None)
s1.circle(x, y0, size=10, color="navy", alpha=0.5)

s2 = figure(plot_width=250, plot_height=250, title=None)
s2.triangle(x, y1, size=10, color="firebrick", alpha=0.5)

s3 = figure(plot_width=250, plot_height=250, title=None)
s3.square(x, y2, size=10, color="olive", alpha=0.5)

col = column(s1, s2, s3)

checkbox = CheckboxGroup(labels=["Plot 1", "Plot 2", "Plot 3"],
                         active=[0, 1, 2], width=100)

callback = CustomJS(args=dict(plots=[s1,s2, s3], col=col, checkbox=checkbox), code="""
const children = []
for (const i of checkbox.active) {
     children.push(plots[i])
} 
col.children = children
""")
checkbox.js_on_change('active', callback)

show(row(checkbox, col))

您可以使用MultiSelect做类似的事情：

select = MultiSelect(options=[("0", "Plot 1"), ("1", "Plot 2"), ("2", "Plot 3")],
                       value=["0", "1", "2"], width=100)

callback = CustomJS(args=dict(plots=[s1,s2, s3], col=col, select=select), code="""
const children = []
for (const i of select.value) {
    children.push(plots[i])
}
col.children = children
""")
select.js_on_change('value', callback)

仅供参考，该代码有点草率-它依靠JS隐式将字符串“ 0”转换为数字。

Answer 2

s1.tags, s2.tags, s3.tags = ['Foo'], ['Bar'], ['Arr'] # name your plots
plots = [s1, s2, s3]
labels = [(plots[i].tags[0]) for i in range(len(plots))]
active = list(range(0, len(plots)))

chkbx = CheckboxButtonGroup(labels=labels, active=active)

callback = CustomJS(args=dict(plots=plots, chkbx=chkbx), code="""
    for (let i = 0; i < plots.length; i++){
        plots[i].visible = chkbx.active.includes(i)
    }
    """)

chkbx.js_on_click(callback)

show(column([chkbx] + plots))

感谢@bigreddot及其answer为该解决方案奠定了基础。