
:orphan:
:html_theme.sidebar_secondary.remove:

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

.. _gallery_bar_chart_with_highlighted_bar:


Bar Chart with Highlighted Bar
------------------------------
This example shows a basic bar chart with a single bar highlighted.


.. altair-plot::
    :remove-code:
    


    import altair as alt
    from altair.datasets import data

    source = data.wheat()

    # If the `year` column equals `1810`
    # then, set the bar color to `"orange"`
    # otherwise, use `"steelblue"`
    color = alt.when(year=1810).then(alt.value("orange")).otherwise(alt.value("steelblue"))

    alt.Chart(source).mark_bar().encode(
        x="year:O",
        y="wheat:Q",
        color=color
    ).properties(width=600)
    # No channel encoding options are specified in this chart
    # so the code is the same as for the method-based syntax.


.. tab-set::

    .. tab-item:: Method syntax
        :sync: method

        .. code:: python


            import altair as alt
            from altair.datasets import data

            source = data.wheat()

            # If the `year` column equals `1810`
            # then, set the bar color to `"orange"`
            # otherwise, use `"steelblue"`
            color = alt.when(year=1810).then(alt.value("orange")).otherwise(alt.value("steelblue"))

            alt.Chart(source).mark_bar().encode(
                x="year:O",
                y="wheat:Q",
                color=color
            ).properties(width=600)


    .. tab-item:: Attribute syntax
        :sync: attribute

        .. code:: python


            import altair as alt
            from altair.datasets import data

            source = data.wheat()

            # If the `year` column equals `1810`
            # then, set the bar color to `"orange"`
            # otherwise, use `"steelblue"`
            color = alt.when(year=1810).then(alt.value("orange")).otherwise(alt.value("steelblue"))

            alt.Chart(source).mark_bar().encode(
                x="year:O",
                y="wheat:Q",
                color=color
            ).properties(width=600)
            # No channel encoding options are specified in this chart
            # so the code is the same as for the method-based syntax.
