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''' Present an interactive function explorer with slider widgets. |
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Scrub the sliders to change the properties of the ``sin`` curve, or |
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type into the title text box to update the title of the plot. |
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Use the ``bokeh serve`` command to run the example by executing: |
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bokeh serve sliders.py |
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at your command prompt. Then navigate to the URL |
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http://localhost:5006/sliders |
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in your browser. |
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''' |
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import numpy as np |
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from bokeh.io import curdoc |
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from bokeh.layouts import row, widgetbox |
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from bokeh.models import ColumnDataSource |
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from bokeh.models.widgets import Slider, TextInput |
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from bokeh.plotting import figure |
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# Set up data |
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N = 200 |
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x = np.linspace(0, 4*np.pi, N) |
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y = np.sin(x) |
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source = ColumnDataSource(data=dict(x=x, y=y)) |
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# Set up plot |
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plot = figure(plot_height=400, plot_width=400, title="my sine wave", |
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tools="crosshair,pan,reset,save,wheel_zoom", |
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x_range=[0, 4*np.pi], y_range=[-2.5, 2.5]) |
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plot.line('x', 'y', source=source, line_width=3, line_alpha=0.6) |
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# Set up widgets |
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text = TextInput(title="title", value='my sine wave') |
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offset = Slider(title="offset", value=0.0, start=-5.0, end=5.0, step=0.1) |
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amplitude = Slider(title="amplitude", value=1.0, start=-5.0, end=5.0) |
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phase = Slider(title="phase", value=0.0, start=0.0, end=2*np.pi) |
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freq = Slider(title="frequency", value=1.0, start=0.1, end=5.1) |
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# Set up callbacks |
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def update_title(attrname, old, new): |
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plot.title.text = text.value |
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text.on_change('value', update_title) |
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def update_data(attrname, old, new): |
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# Get the current slider values |
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a = amplitude.value |
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b = offset.value |
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w = phase.value |
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k = freq.value |
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# Generate the new curve |
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x = np.linspace(0, 4*np.pi, N) |
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y = a*np.sin(k*x + w) + b |
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source.data = dict(x=x, y=y) |
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for w in [offset, amplitude, phase, freq]: |
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w.on_change('value', update_data) |
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# Set up layouts and add to document |
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inputs = widgetbox(text, offset, amplitude, phase, freq) |
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curdoc().add_root(row(inputs, plot, width=800)) |
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curdoc().title = "Sliders" |
Hi,
Can you help me in this bokeh dynamic plot , where i am missing the stuff ,
I am getting bokeh plot in flask embedded in webpage but it is static not dynamic .,
Do i have to write function for current document / modify doc . link is below there u can find details.
https://stackoverflow.com/questions/62077389/bokeh-embedded-plot-not-acting-dynamic-in-flask-app-with-no-error
Thankyou.