44 lines
1 KiB
Python
44 lines
1 KiB
Python
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"""
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Ranged Dot Plot
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This example shows a ranged dot plot that uses 'layer' to convey changing life expectancy for the five most populous countries (between 1955 and 2000).
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"""
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# category: other charts
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import altair as alt
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from vega_datasets import data
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source = data.countries.url
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chart = alt.layer(
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data=source
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).transform_filter(
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filter={"field": 'country',
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"oneOf": ["China", "India", "United States", "Indonesia", "Brazil"]}
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).transform_filter(
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filter={'field': 'year',
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"oneOf": [1955, 2000]}
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)
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chart += alt.Chart().mark_line(color='#db646f').encode(
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x='life_expect:Q',
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y='country:N',
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detail='country:N'
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)
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# Add points for life expectancy in 1955 & 2000
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chart += alt.Chart().mark_point(
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size=100,
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opacity=1,
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filled=True
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).encode(
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x='life_expect:Q',
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y='country:N',
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color=alt.Color('year:O',
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scale=alt.Scale(
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domain=['1955', '2000'],
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range=['#e6959c', '#911a24']
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)
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)
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).interactive()
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chart
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