Altair Stock Charts Example
Visualizing Stocks in Altair
This is an example of using line charts to visualize stocks data. I have created a 7-minute video to accompany this article.
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import altair as alt
from vega_datasets import data
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source = data.stocks()
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source.head()
| symbol | date | price | |
|---|---|---|---|
| 0 | MSFT | 2000-01-01 | 39.81 |
| 1 | MSFT | 2000-02-01 | 36.35 |
| 2 | MSFT | 2000-03-01 | 43.22 |
| 3 | MSFT | 2000-04-01 | 28.37 |
| 4 | MSFT | 2000-05-01 | 25.45 |
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source.info()
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<class 'pandas.core.frame.DataFrame'>
RangeIndex: 560 entries, 0 to 559
Data columns (total 3 columns):
# Column Non-Null Count Dtype
--- ------ -------------- -----
0 symbol 560 non-null object
1 date 560 non-null datetime64[ns]
2 price 560 non-null float64
dtypes: datetime64[ns](1), float64(1), object(1)
memory usage: 13.2+ KB
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alt.Chart(source).mark_line().encode(
x = 'date', y = 'price', color = 'symbol',
strokeDash = 'symbol'
).properties(width=600).configure_axis(grid=False)
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