25 lines
849 B
Python
25 lines
849 B
Python
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"""
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Wind Vector Map
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---------------
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An example showing a vector array map showing wind speed and direction using ``wedge``
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as shape for ``mark_point`` and ``angle`` encoding for the wind direction.
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This is adapted from this corresponding Vega-Lite Example:
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`Wind Vector Map <https://vega.github.io/vega-lite/examples/point_angle_windvector.html>`_.
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"""
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# category: scatter plots
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import altair as alt
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from vega_datasets import data
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source = data.windvectors()
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alt.Chart(source).mark_point(shape="wedge", filled=True).encode(
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latitude="latitude",
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longitude="longitude",
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color=alt.Color(
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"dir", scale=alt.Scale(domain=[0, 360], scheme="rainbow"), legend=None
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),
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angle=alt.Angle("dir", scale=alt.Scale(domain=[0, 360], range=[180, 540])),
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size=alt.Size("speed", scale=alt.Scale(rangeMax=500)),
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).project("equalEarth")
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