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29 lines
635 B
Python
29 lines
635 B
Python
"""
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Faceted Density Estimates
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-------------------------
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Density estimates of measurements for each iris flower feature
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"""
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# category: area charts
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import altair as alt
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from vega_datasets import data
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source = data.iris()
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alt.Chart(source).transform_fold(
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['petalWidth',
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'petalLength',
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'sepalWidth',
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'sepalLength'],
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as_ = ['Measurement_type', 'value']
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).transform_density(
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density='value',
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bandwidth=0.3,
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groupby=['Measurement_type'],
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extent= [0, 8]
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).mark_area().encode(
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alt.X('value:Q'),
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alt.Y('density:Q'),
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alt.Row('Measurement_type:N')
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).properties(width=300, height=50)
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