如何多次更新散景图中的图特征（悬停工具详细信息和x_range）？

Question

I have a bokeh plot that I would like to update the ranges (x_range and y_range) as well as the hovertool details (field names, etc.) when I update the source data in the plot. The things I've tried haven't worked yet. Any help would be appreciated. Here's an example of what I've tried.

def update_plot(*args):
    source = select_data();

    # Set ranges (not working)
    p.x_range = Range1d(0, source['x'].max())
    p.y_range = Range1d(0, source['y'].max())

    # How to change hovertool here?

figureTools = [HoverTool()]
p = figure(plot_height=600, plot_width=700, title='', tools=figureTools)
p.circle(x='x', y='y', source=source, line_color=None)

widget = widgets.Dropdown(options=['1', '2', '3'])
widget.observe(update_plot, 'value')

update_plot();
show(p);

Answer 1

You can put show(p) inside update, that works for me. For example,

def update_plot(*args):
    source = select_data();

    # Set ranges (not working)
    p.x_range = Range1d(0, source['x'].max())
    p.y_range = Range1d(0, source['y'].max())

    # How to change hovertool here?
    show(p);

figureTools = [HoverTool()]
p = figure(plot_height=600, plot_width=700, title='', tools=figureTools)
p.circle(x='x', y='y', source=source, line_color=None)

widget = widgets.Dropdown(options=['1', '2', '3'])
widget.observe(update_plot, 'value')

update_plot();
show(p);