In [1]:
from bokeh.io import vform
from bokeh.models import Callback, ColumnDataSource, Slider
from bokeh.plotting import figure, output_file, show
In [2]:
output_file("callback.html")
x = [x*0.005 for x in range(0, 200)]
y = x
source = ColumnDataSource(data=dict(x=x, y=y))
plot = figure(plot_width=400, plot_height=400)
plot.line('x', 'y', source=source, line_width=3, line_alpha=0.6)
callback = Callback(args=dict(source=source), code="""
var data = source.get('data');
var f = cb_obj.get('value')
x = data['x']
y = data['y']
for (i = 0; i < x.length; i++) {
y[i] = Math.pow(x[i], f)
}
source.trigger('change');
""")
In [3]:
slider = Slider(start=0.1, end=4, value=1, step=.1, title="power", callback=callback)
layout = vform(slider, plot)
show(layout)
In [4]:
from bokeh.sampledata.glucose import data
(x, y) = (data.ix['2010-10-06'].index.to_series(), data.ix['2010-10-06']['glucose'])
from bokeh.plotting import figure, output_file, show
from bokeh.models import ColumnDataSource, Circle, HoverTool
from bokeh.models import Callback
output_file("hover_callback.html")
# Basic plot setup
p = figure(width=600, height=300, x_axis_type="datetime", tools="", toolbar_location=None, title='Hover over points')
p.line(x, y, line_dash="4 4", line_width=1, color='gray')
# Add a circle, that is visible only when selected
source = ColumnDataSource({'x': x, 'y': y})
invisible_circle = Circle(x='x', y='y', fill_color='gray', fill_alpha=0.05, line_color=None, size=20)
visible_circle = Circle(x='x', y='y', fill_color='firebrick', fill_alpha=0.5, line_color=None, size=20)
cr = p.add_glyph(source, invisible_circle, selection_glyph=visible_circle, nonselection_glyph=invisible_circle)
# Add a hover tool, that selects the circle
code = "source.set('selected', cb_data['index']);"
callback = Callback(args={'source': source}, code=code)
p.add_tools(HoverTool(tooltips=None, callback=callback, renderers=[cr], mode='hline'))
show(p)
In [6]:
from bokeh.models.actions import Callback
In [7]:
Callback()
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