Bokeh Real Time Graph

bokeh_real_time.py

# stolen from https://rehn.me/posts/python-real-time-plotting.html
# in case that disappears
import random

from bokeh.driving import count
from bokeh.models import ColumnDataSource
from bokeh.plotting import curdoc, figure

UPDATE_INTERVAL = 100
ROLLOVER = 100 # Number of displayed data points

source = ColumnDataSource({"x": [], "y": []})

def make_y():
  return random.random()

@count()
def update(x):
    y = make_y()
    source.stream({"x": [x], "y": [y]}, rollover=ROLLOVER)

p = figure()
p.line("x", "y", source=source)

doc = curdoc()
doc.add_root(p)
doc.add_periodic_callback(update, UPDATE_INTERVAL)

'''
Now just run this in the shell
bokeh serve --show plot.py
'''