.. This document is auto-generated by the altair-gallery extension. Do not modify directly.

.. _gallery_wind_vector_map:


Wind Vector Map
---------------
An example showing a vector array map showing wind speed and direction using ``wedge``
as shape for ``mark_point`` and ``angle`` encoding for the wind direction.
This is adapted from this corresponding Vega-Lite Example:
`Wind Vector Map <https://vega.github.io/vega-lite/examples/point_angle_windvector.html>`_.


.. altair-plot::
    :code-below:

    

    import altair as alt
    from vega_datasets import data

    source = data.windvectors()

    alt.Chart(source).mark_point(shape="wedge", filled=True).encode(
        latitude="latitude",
        longitude="longitude",
        color=alt.Color(
            "dir", scale=alt.Scale(domain=[0, 360], scheme="rainbow"), legend=None
        ),
        angle=alt.Angle("dir", scale=alt.Scale(domain=[0, 360], range=[180, 540])),
        size=alt.Size("speed", scale=alt.Scale(rangeMax=500)),
    ).project("equalEarth")


.. toctree::
   :hidden: