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

.. _gallery_interactive_cross_highlight:


Interactive Chart with Cross-Highlight
======================================
This example shows an interactive chart where selections in one portion of
the chart affect what is shown in other panels. Click on the bar chart to
see a detail of the distribution in the upper panel.


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

    
    import altair as alt
    from vega_datasets import data

    source = data.movies.url

    pts = alt.selection(type="single", encodings=['x'])

    rect = alt.Chart(data.movies.url).mark_rect().encode(
        alt.X('IMDB_Rating:Q', bin=True),
        alt.Y('Rotten_Tomatoes_Rating:Q', bin=True),
        alt.Color('count()',
            scale=alt.Scale(scheme='greenblue'),
            legend=alt.Legend(title='Total Records')
        )
    )

    circ = rect.mark_point().encode(
        alt.ColorValue('grey'),
        alt.Size('count()',
            legend=alt.Legend(title='Records in Selection')
        )
    ).transform_filter(
        pts
    )

    bar = alt.Chart(source).mark_bar().encode(
        x='Major_Genre:N',
        y='count()',
        color=alt.condition(pts, alt.ColorValue("steelblue"), alt.ColorValue("grey"))
    ).properties(
        width=550,
        height=200
    ).add_selection(pts)

    alt.vconcat(
        rect + circ,
        bar
    ).resolve_legend(
        color="independent",
        size="independent"
    )


.. toctree::
   :hidden: