20 lines
441 B
Python
20 lines
441 B
Python
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"""
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Filled Step Chart
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-----------------
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This example shows Google's stock price over time as a step chart with its area filled in and its line emphasized.
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"""
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# category: line charts
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import altair as alt
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from vega_datasets import data
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source = data.stocks()
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alt.Chart(source).mark_area(
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color="lightblue",
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interpolate='step-after',
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line=True
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).encode(
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x='date',
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y='price'
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).transform_filter(alt.datum.symbol == 'GOOG')
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