texas¶

from bokeh.models import HoverTool
from bokeh.palettes import Viridis6
from bokeh.plotting import figure, show, output_file, ColumnDataSource
from bokeh.sampledata.us_counties import data as counties
from bokeh.sampledata.unemployment import data as unemployment

counties = {
    code: county for code, county in counties.items() if county["state"] == "tx"
}

county_xs = [county["lons"] for county in counties.values()]
county_ys = [county["lats"] for county in counties.values()]

county_names = [county['name'] for county in counties.values()]
county_rates = [unemployment[county_id] for county_id in counties]
county_colors = [Viridis6[int(rate/3)] for rate in county_rates]

source = ColumnDataSource(data=dict(
    x=county_xs,
    y=county_ys,
    color=county_colors,
    name=county_names,
    rate=county_rates,
))

TOOLS="pan,wheel_zoom,box_zoom,reset,hover,save"

p = figure(title="Texas Unemployment 2009", tools=TOOLS,
           x_axis_location=None, y_axis_location=None)
p.grid.grid_line_color = None

p.patches('x', 'y', source=source,
          fill_color='color', fill_alpha=0.7,
          line_color="white", line_width=0.5)

hover = p.select_one(HoverTool)
hover.point_policy = "follow_mouse"
hover.tooltips = [
    ("Name", "@name"),
    ("Unemployment rate)", "@rate%"),
    ("(Long, Lat)", "($x, $y)"),
]

output_file("texas.html", title="texas.py example")

show(p)