Streaming data with Bokeh and Panel periodic callbacks?

Panel
11

Once this PR is merged you’ll be able to do this:

    
class Application(param.Parameterized):
    ...

    def _do_calc(self):
        data = list(np.random.randint(0, 2 ** 31, 10))
        cb = partial(self.update_source, data)
        pn.state.curdoc.add_next_tick_callback(cb)

    ...

def create_app():
    app = Application()
    return app.panel()

server = pn.serve(create_app, show=False, loop=IOLoop().current(), start=False, port=5006)
# Do stuff
server.io_loop.start()

and the periodic callback will correctly discover the current document. Make sure to use pn.state.curdoc yourself.

1 Like