utils.py
from colorsys import hsv_to_rgb
from bokeh.models import PanTool, ZoomInTool, ZoomOutTool, ResetTool, HoverTool, Range1d
from ...names import N
def tooltip(name):
return name, '@{%s}' % name
def make_tools(y):
tools = [PanTool(dimensions='width'),
ZoomInTool(dimensions='width'), ZoomOutTool(dimensions='width'),
ResetTool(),
HoverTool(tooltips=[tooltip(x) for x in (y, N.DISTANCE_KM, N.LOCAL_TIME)])]
return tools
def make_range(column, lo=None, hi=None):
column = column.dropna()
mn, mx = column.min() if lo is None else lo, column.max() if hi is None else hi
delta = mx - mn
return Range1d(start=mn - 0.1 * delta, end=mx + 0.1 * delta)
def evenly_spaced_hues(n, saturation=1, value=1, stagger=1):
for i in range(n):
r, g, b = [int(x * 255) for x in hsv_to_rgb(((i * stagger) % n) / n, saturation, value)]
yield f'#{r:02x}{g:02x}{b:02x}'.upper()
def get_renderer(f, name):
for renderer in f.renderers:
if renderer.name == name:
return renderer
raise Exception(f'No rendered {name} in {f}')
