29 lines
818 B
Python
29 lines
818 B
Python
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"""
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Parallel Coordinates Example
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----------------------------
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A `Parallel Coordinates <https://en.wikipedia.org/wiki/Parallel_coordinates>`_
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chart is a chart that lets you visualize the individual data points by drawing
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a single line for each of them.
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Such a chart can be created in Altair by first transforming the data into a
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suitable representation.
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This example shows a parallel coordinates chart with the Iris dataset.
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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.iris()
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alt.Chart(source).transform_window(
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index='count()'
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).transform_fold(
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['petalLength', 'petalWidth', 'sepalLength', 'sepalWidth']
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).mark_line().encode(
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x='key:N',
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y='value:Q',
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color='species:N',
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detail='index:N',
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opacity=alt.value(0.5)
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).properties(width=500)
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