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使用MultiSelect小部件在bokeh中隐藏和显示线条

在bokeh中,可以使用MultiSelect小部件来隐藏和显示线条。MultiSelect小部件是一个下拉菜单,可以选择要显示或隐藏的线条。

要使用MultiSelect小部件隐藏和显示线条,可以按照以下步骤进行操作:

  1. 导入必要的库和模块:from bokeh.plotting import figure, show from bokeh.models import MultiSelect from bokeh.layouts import column
  2. 创建一个包含线条的图表:p = figure(width=400, height=400) line1 = p.line([1, 2, 3, 4, 5], [2, 4, 6, 8, 10], line_color="blue", line_width=2) line2 = p.line([1, 2, 3, 4, 5], [1, 3, 5, 7, 9], line_color="red", line_width=2)
  3. 创建一个MultiSelect小部件,并设置选项:select = MultiSelect(title="选择要显示的线条:", value=[], options=["线条1", "线条2"])
  4. 创建一个回调函数,用于根据选择的线条来隐藏或显示线条:def update_plot(attrname, old, new): if "线条1" in select.value: line1.visible = True else: line1.visible = False if "线条2" in select.value: line2.visible = True else: line2.visible = False select.on_change('value', update_plot)
  5. 将图表和MultiSelect小部件放置在布局中并显示:layout = column(select, p) show(layout)

这样,当选择框中的线条被选中时,相应的线条将显示出来;当线条未被选中时,相应的线条将被隐藏。

这种方法可以用于在bokeh中动态地隐藏和显示线条,使用户能够根据需要自由选择要显示的线条。

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value (bool) Preselect the checkbox when it first renders. This will be cast to bool internally. key (str or int) An optional string or integer to use as the unique key for the widget. If this is omitted, a key will be generated for the widget based on its content. Multiple widgets of the same type may not share the same key. help (str) An optional tooltip that gets displayed next to the checkbox. on_change (callable) An optional callback invoked when this checkbox's value changes. args (tuple) An optional tuple of args to pass to the callback. kwargs (dict) An optional dict of kwargs to pass to the callback. disabled (bool) An optional boolean, which disables the checkbox if set to True. The default is False. label_visibility ("visible", "hidden", or "collapsed") The visibility of the label. If "hidden", the label doesn't show but there is still empty space for it (equivalent to label=""). If "collapsed", both the label and the space are removed. Default is "visible".

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