40 lines
544 B
Python
40 lines
544 B
Python
#!/usr/bin/env python
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from time import sleep
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from random import random
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from bokeh.plotting import curdoc, figure
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from bokeh.models import ColumnDataSource
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data = {
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"x": [0, 1, 2, 3, 4],
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"y": [6, 7, 2, 3, 5]
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}
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i = len(data["x"])
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source = ColumnDataSource(data=data)
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p = figure()
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p.line(x="x", y="y", source=source)
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def update():
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global i
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i += 1
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new = {
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"x": [i],
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"y": [random()*10]
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}
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source.stream(new, rollover=50)
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doc = curdoc()
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doc.add_periodic_callback(update, 500)
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doc.add_root(p)
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