import numpy as np
import holoviews as hv
from holoviews import opts

hv.extension('bokeh')

hv.Path({'x': [1, 2, 3, 4, 5], 'y': [0, 0, 1, 1, 2]}, ['x', 'y'])

p = hv.Path([{'x': [1, 2, 3, 4, 5], 'y': [0, 0, 1, 1, 2], 'value': 0},
             {'x': [5, 4, 3, 2, 1], 'y': [2, 2, 1, 1, 0], 'value': 1}], vdims='value').opts(color='value')
p

hv.Path([{'x': [1, 2, 3, 4, 5, np.nan, 5, 4, 3, 2, 1],
          'y': [0, 0, 1, 1, 2, np.nan, 2, 2, 1, 1, 0], 'value': 0}],
        vdims='value').opts(color='value')

a, b, delta = 3, 5, np.pi/2.

vs = np.linspace(0, np.pi*2, 200)
xs = np.sin(a * vs + delta)
ys = np.sin(b * vs)

hv.Path([{'x': xs, 'y': ys, 'value': vs}], vdims='value').opts(
    color='value', cmap='hsv')

hv.Contours([{'x': xs, 'y': ys, 'value': np.ones(200)}], vdims='value').opts(color='value')

xs = [1, 2, 3]
ys = [2, 0, 7]
holes = [[[(1.5, 2), (2, 3), (1.6, 1.6)], [(2.1, 4.5), (2.5, 5), (2.3, 3.5)]]]

hv.Polygons([{'x': xs, 'y': ys, 'holes': holes}])

xs = [1, 2, 3, np.nan, 6, 7, 3]
ys = [2, 0, 7, np.nan, 7, 5, 2]

holes = [
    [[(1.5, 2), (2, 3), (1.6, 1.6)], [(2.1, 4.5), (2.5, 5), (2.3, 3.5)]],
    []
]

hv.Polygons([{'x': xs, 'y': ys, 'holes': holes}])

hv.Polygons([{'x': xs, 'y': ys, 'holes': holes, 'value': 0},
             {'x': [4, 6, 6], 'y': [0, 2, 1], 'value': 1},
             {'x': [-3, -1, -6], 'y': [3, 2, 1], 'value': 3}], vdims='value')

poly = hv.Polygons([
    {'x': xs, 'y': ys, 'holes': holes, 'value': 0},
    {'x': [4, 6, 6], 'y': [0, 2, 1], 'value': 1}
], vdims='value')

hv.Layout(poly.split())

poly.split(datatype='dictionary')