#!/usr/bin/env python
# coding: utf-8

# In[ ]:


import panel as pn

pn.extension('deckgl', 'plotly', 'vega')


# This example demonstrates how to use the `Tabs` panel to render a number of complex components without rendering them all at once by enabling the `dynamic` parameter.

# ## Altair

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import altair as alt
from vega_datasets import data

cars = data.cars()

chart = alt.Chart(cars).mark_circle(size=60).encode(
    x='Horsepower',
    y='Miles_per_Gallon',
    color='Origin',
    tooltip=['Name', 'Origin', 'Horsepower', 'Miles_per_Gallon']
).properties(width='container', height='container').interactive()

altair_pane = pn.panel(chart)


# ## Bokeh

# In[ ]:


from math import pi
import pandas as pd

from bokeh.palettes import Category20c, Category20
from bokeh.plotting import figure
from bokeh.transform import cumsum

x = {
    'United States': 157,
    'United Kingdom': 93,
    'Japan': 89,
    'China': 63,
    'Germany': 44,
    'India': 42,
    'Italy': 40,
    'Australia': 35,
    'Brazil': 32,
    'France': 31,
    'Taiwan': 31,
    'Spain': 29
}

data = pd.Series(x).reset_index(name='value').rename(columns={'index':'country'})
data['angle'] = data['value']/data['value'].sum() * 2*pi
data['color'] = Category20c[len(x)]

p = figure(sizing_mode='stretch_both', title="Pie Chart", toolbar_location=None,
           tools="hover", tooltips="@country: @value", x_range=(-0.5, 1.0), min_height=800)

r = p.wedge(x=0, y=1, radius=0.4,
        start_angle=cumsum('angle', include_zero=True), end_angle=cumsum('angle'),
        line_color="white", fill_color='color', legend_field='country', source=data)

p.axis.axis_label=None
p.axis.visible=False
p.grid.grid_line_color = None

bokeh_pane = pn.pane.Bokeh(p)


# ## DeckGL

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MAPBOX_KEY = (
    "pk.eyJ1IjoibWFyY3Nrb3ZtYWRzZW4iLCJhIjoiY2s1anMzcG5rMDYzazNvcm10NTFybTE4cSJ9."
    "TV1XBgaMfR-iTLvAXM_Iew"
)

json_spec = {
    "initialViewState": {
        "bearing": -27.36,
        "latitude": 52.2323,
        "longitude": -1.415,
        "maxZoom": 15,
        "minZoom": 5,
        "pitch": 40.5,
        "zoom": 6
    },
    "layers": [{
        "@@type": "HexagonLayer",
        "autoHighlight": True,
        "coverage": 1,
        "data": "https://raw.githubusercontent.com/uber-common/deck.gl-data/master/examples/3d-heatmap/heatmap-data.csv",
        "elevationRange": [0, 3000],
        "elevationScale": 50,
        "extruded": True,
        "getPosition": "@@=[lng, lat]",
        "id": "8a553b25-ef3a-489c-bbe2-e102d18a3211", "pickable": True
    }],
    "mapStyle": "mapbox://styles/mapbox/dark-v9",
    "views": [{"@@type": "MapView", "controller": True}]
}

deck_gl = pn.pane.DeckGL(json_spec, mapbox_api_key=MAPBOX_KEY, sizing_mode='stretch_width', height=800)


# ## HoloViews

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import pandas as pd
import holoviews as hv
import hvplot.pandas
import holoviews.plotting.bokeh

def sine(frequency=1.0, amplitude=1.0, function='sin'):
    xs = np.arange(200)/200*20.0
    ys = amplitude*getattr(np, function)(frequency*xs)
    return pd.DataFrame(dict(y=ys), index=xs).hvplot(responsive=True)

dmap = hv.DynamicMap(sine, kdims=['frequency', 'amplitude', 'function']).redim.range(
    frequency=(0.1, 10), amplitude=(1, 10)).redim.values(function=['sin', 'cos', 'tan'])

hv_panel = pn.pane.HoloViews(dmap, widgets={
    'amplitude': pn.widgets.LiteralInput(value=1., type=(float, int)),
    'function': pn.widgets.RadioButtonGroup,
    'frequency': {'value': 5}
}, center=True, sizing_mode='stretch_both').layout


# 
# ## Matplotlib

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import numpy as np
import matplotlib

matplotlib.use('agg')

import matplotlib.pyplot as plt

Y, X = np.mgrid[-3:3:100j, -3:3:100j]
U = -1 - X**2 + Y
V = 1 + X - Y**2
speed = np.sqrt(U*U + V*V)

fig0, ax0 = plt.subplots()
strm = ax0.streamplot(X, Y, U, V, color=U, linewidth=2, cmap=plt.cm.autumn)
fig0.colorbar(strm.lines)

mpl_pane = pn.pane.Matplotlib(fig0, dpi=144)


# ## Plotly

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import numpy as np
import plotly.graph_objs as go

xx = np.linspace(-3.5, 3.5, 100)
yy = np.linspace(-3.5, 3.5, 100)
x, y = np.meshgrid(xx, yy)
z = np.exp(-(x-1)**2-y**2)-(x**3+y**4-x/5)*np.exp(-(x**2+y**2))

surface = go.Surface(z=z)
layout = go.Layout(
    title='Plotly 3D Plot',
    autosize=True,
    margin=dict(t=50, b=50, r=50, l=50)
)
fig = dict(data=[surface], layout=layout)

plotly_pane = pn.pane.Plotly(fig)


# ## Dynamic Tabs

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pn.Tabs(
    ('Altair', altair_pane),
    ('Bokeh', bokeh_pane),
    ('deck.GL', deck_gl),
    ('HoloViews', hv_panel),
    ('Matplotlib', mpl_pane),
    ('Plotly', plotly_pane),
    dynamic=True
).servable()