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

.. _gallery_simple_highlighted_bar_chart:


Simple Highlighted Bar Chart
============================
This example shows a basic bar chart with a single bar singled out for a highlight.


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

    
    import altair as alt
    from vega_datasets import data

    population = data.population.url

    alt.Chart(population).mark_bar().encode(
        x="year:O",
        y="sum(people):Q",
        # The highlight will be set on the result of a conditional statement
        color=alt.condition(
            alt.datum.year == 1970,  # If the year is 1970 this test returns True,
            alt.value('orange'),     # which sets the bar orange.
            alt.value('steelblue')   # And if it's not true it sets the bar steelblue.
        )
    )


.. toctree::
   :hidden: