File: simple_line_chart.py

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"""
Simple Line Chart
-----------------
This chart shows the most basic line chart, made from a dataframe with two
columns.
"""
# category: simple charts

import altair as alt
import numpy as np
import pandas as pd

x = np.arange(100)
source = pd.DataFrame({
  'x': x,
  'f(x)': np.sin(x / 5)
})

alt.Chart(source).mark_line().encode(
    x='x',
    y='f(x)'
)