def gapminder_plot(doc):
# Apply dimension labels and ranges
kdims = ['Fertility', 'Life expectancy']
vdims = ['Country', 'Population', 'Group']
dimensions = {
'Fertility':
dict(label='Children per woman (total fertility)', range=(0, 10)),
'Life expectancy':
dict(label='Life expectancy at birth (years)', range=(15, 100)),
'Population': ('population', 'Population')
}
# Create Points plotting fertility vs life expectancy indexed by Year
gapminder_ds = ds.redim(**dimensions).to(hv.Points, kdims, vdims, 'Year')
# Define annotations
text = gapminder_ds.clone({
yr: hv.Text(1.2, 25, str(int(yr)), fontsize=30)
for yr in gapminder_ds.keys()
})
# Define options
opts = {
'plot':
dict(width=950,
height=450,
tools=['hover'],
size_index='Population',
color_index='Group',
size_fn=np.sqrt,
title_format="{label}"),
'style':
dict(cmap='Set1', size=0.3, line_color='black', alpha=0.6)
}
text_opts = {'style': dict(text_font_size='52pt', text_color='lightgray')}
# Combine Points and Text
hvgapminder = (gapminder_ds({'Points': opts}) *
text({'Text': text_opts})).relabel('Gapminder Demo')
# Define custom widgets
def animate_update():
year = slider.value + 1
if year > end:
year = start
slider.value = year
# Update the holoviews plot by calling update with the new year.
def slider_update(attrname, old, new):
hvplot.update((new, ))
def animate():
if button.label == '► Play':
button.label = '❚❚ Pause'
doc.add_periodic_callback(animate_update, 200)
else:
button.label = '► Play'
doc.remove_periodic_callback(animate_update)
start, end = ds.range('Year')
slider = Slider(start=start, end=end, value=start, step=1, title="Year")
slider.on_change('value', slider_update)
button = Button(label='► Play', width=60)
button.on_click(animate)
# Get HoloViews plot
hvplot = BokehRenderer.get_plot(hvgapminder, doc)
# Make a bokeh layout and add it as the Document root
plot = layout([[hvplot.state], [slider, button]], sizing_mode='fixed')
doc.add_root(plot)
return doc
# Update the holoviews plot by calling update with the new year.
def slider_update(attrname, old, new):
hvplot.update((new, ))
def animate():
if button.label == '► Play':
button.label = '❚❚ Pause'
doc.add_periodic_callback(animate_update, 200)
else:
button.label = '► Play'
doc.remove_periodic_callback(animate_update)
start, end = ds.range('Year')
slider = Slider(start=start, end=end, value=start, step=1, title="Year")
slider.on_change('value', slider_update)
button = Button(label='► Play', width=60)
button.on_click(animate)
# Get HoloViews plot and attach document
doc = curdoc()
hvplot = BokehRenderer.get_plot(hvgapminder, doc)
# Make a bokeh layout and add it as the Document root
plot = layout([[hvplot.state], [slider, button]], sizing_mode='fixed')
doc.add_root(plot)
if year > end:
year = start
slider.value = year
# Update the holoviews plot by calling update with the new year.
def slider_update(attrname, old, new):
hvplot.update((new,))
def animate():
if button.label == '► Play':
button.label = '❚❚ Pause'
doc.add_periodic_callback(animate_update, 200)
else:
button.label = '► Play'
doc.remove_periodic_callback(animate_update)
start, end = ds.range('Year')
slider = Slider(start=start, end=end, value=start, step=1, title="Year")
slider.on_change('value', slider_update)
button = Button(label='► Play', width=60)
button.on_click(animate)
# Get HoloViews plot and attach document
doc = curdoc()
hvplot = BokehRenderer.get_plot(hvgapminder, doc)
# Make a bokeh layout and add it as the Document root
plot = layout([[hvplot.state], [slider, button]], sizing_mode='fixed')
doc.add_root(plot)
