:orphan:
:html_theme.sidebar_secondary.remove:

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

.. _gallery_multiple_interactions:


Multiple Interactions
=====================
This example shows how multiple user inputs can be layered onto a chart. The four inputs have functionality as follows:

* Dropdown: Filters the movies by genre
* Radio Buttons: Highlights certain films by Worldwide Gross
* Mouse Drag and Scroll: Zooms the x and y scales to allow for panning.





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


    import altair as alt
    from vega_datasets import data

    movies = alt.UrlData(
        data.movies.url,
        format=alt.DataFormat(parse={"Release_Date":"date"})
    )
    ratings = ['G', 'NC-17', 'PG', 'PG-13', 'R']
    genres = ['Action', 'Adventure', 'Black Comedy', 'Comedy',
           'Concert/Performance', 'Documentary', 'Drama', 'Horror', 'Musical',
           'Romantic Comedy', 'Thriller/Suspense', 'Western']

    base = alt.Chart(movies, width=200, height=200).mark_point(filled=True).transform_calculate(
        Rounded_IMDB_Rating = "floor(datum.IMDB_Rating)",
        Hundred_Million_Production =  "datum.Production_Budget > 100000000.0 ? 100 : 10",
        Release_Year = "year(datum.Release_Date)"
    ).transform_filter(
        alt.datum.IMDB_Rating > 0
    ).transform_filter(
        alt.FieldOneOfPredicate(field='MPAA_Rating', oneOf=ratings)
    ).encode(
        x=alt.X('Worldwide_Gross:Q', scale=alt.Scale(domain=(100000,10**9), clamp=True)),
        y='IMDB_Rating:Q',
        tooltip="Title:N"
    )

    # A slider filter
    year_slider = alt.binding_range(min=1969, max=2018, step=1, name="Release Year")
    slider_selection = alt.selection_point(bind=year_slider, fields=['Release_Year'])

    filter_year = base.add_params(
        slider_selection
    ).transform_filter(
        slider_selection
    ).properties(title="Slider Filtering")

    # A dropdown filter
    genre_dropdown = alt.binding_select(options=genres, name="Genre")
    genre_select = alt.selection_point(fields=['Major_Genre'], bind=genre_dropdown)

    filter_genres = base.add_params(
        genre_select
    ).transform_filter(
        genre_select
    ).properties(title="Dropdown Filtering")

    #color changing marks
    rating_radio = alt.binding_radio(options=ratings, name="Rating")
    rating_select = alt.selection_point(fields=['MPAA_Rating'], bind=rating_radio)

    rating_color_condition = alt.condition(
        rating_select,
        alt.Color('MPAA_Rating:N', legend=None),
        alt.value('lightgray')
    )

    highlight_ratings = base.add_params(
        rating_select
    ).encode(
        color=rating_color_condition
    ).properties(title="Radio Button Highlighting")

    # Boolean selection for format changes
    input_checkbox = alt.binding_checkbox(name="Big Budget Films ")
    checkbox_selection = alt.param(bind=input_checkbox)

    size_checkbox_condition = alt.condition(
        checkbox_selection,
        alt.Size('Hundred_Million_Production:Q'),
        alt.SizeValue(25)
    )

    budget_sizing = base.add_params(
        checkbox_selection
    ).encode(
        size=size_checkbox_condition
    ).properties(title="Checkbox Formatting")

    (filter_year | filter_genres) & (highlight_ratings | budget_sizing)


.. tab-set::

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

        .. code:: python


            import altair as alt
            from vega_datasets import data

            movies = alt.UrlData(
                data.movies.url,
                format=alt.DataFormat(parse={"Release_Date":"date"})
            )
            ratings = ['G', 'NC-17', 'PG', 'PG-13', 'R']
            genres = [
                'Action', 'Adventure', 'Black Comedy', 'Comedy',
                'Concert/Performance', 'Documentary', 'Drama', 'Horror', 'Musical',
                'Romantic Comedy', 'Thriller/Suspense', 'Western'
            ]

            base = alt.Chart(movies, width=200, height=200).mark_point(filled=True).transform_calculate(
                Rounded_IMDB_Rating = "floor(datum.IMDB_Rating)",
                Big_Budget_Film =  "datum.Production_Budget > 100000000 ? 'Yes' : 'No'", 
                Release_Year = "year(datum.Release_Date)",
            ).transform_filter(
                alt.datum.IMDB_Rating > 0
            ).transform_filter(
                alt.FieldOneOfPredicate(field='MPAA_Rating', oneOf=ratings)
            ).encode(
                x=alt.X('Worldwide_Gross:Q').scale(domain=(100000,10**9), clamp=True),
                y='IMDB_Rating:Q',
                tooltip="Title:N"
            )

            # A slider filter
            year_slider = alt.binding_range(min=1969, max=2018, step=1, name="Release Year")
            slider_selection = alt.selection_point(bind=year_slider, fields=['Release_Year'])

            filter_year = base.add_params(
                slider_selection
            ).transform_filter(
                slider_selection
            ).properties(title="Slider Filtering")

            # A dropdown filter
            genre_dropdown = alt.binding_select(options=genres, name="Genre")
            genre_select = alt.selection_point(fields=['Major_Genre'], bind=genre_dropdown)

            filter_genres = base.add_params(
                genre_select
            ).transform_filter(
                genre_select
            ).properties(title="Dropdown Filtering")

            # Color changing marks
            rating_radio = alt.binding_radio(options=ratings, name="Rating")
            rating_select = alt.selection_point(fields=['MPAA_Rating'], bind=rating_radio)

            rating_color_condition = alt.condition(
                rating_select,
                alt.Color('MPAA_Rating:N').legend(None),
                alt.value('lightgray')
            )

            highlight_ratings = base.add_params(
                rating_select
            ).encode(
                color=rating_color_condition
            ).properties(title="Radio Button Highlighting")

            # Boolean selection for format changes
            input_checkbox = alt.binding_checkbox(name="Big Budget Films ")
            checkbox_selection = alt.param(bind=input_checkbox)

            size_checkbox_condition = alt.condition(
                checkbox_selection,
                alt.Size('Big_Budget_Film:N').scale(range=[25, 150]),
                alt.SizeValue(25)
            )

            budget_sizing = base.add_params(
                checkbox_selection
            ).encode(
                size=size_checkbox_condition
            ).properties(title="Checkbox Formatting")

            (filter_year | budget_sizing) & (highlight_ratings | filter_genres)


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

        .. code:: python


            import altair as alt
            from vega_datasets import data

            movies = alt.UrlData(
                data.movies.url,
                format=alt.DataFormat(parse={"Release_Date":"date"})
            )
            ratings = ['G', 'NC-17', 'PG', 'PG-13', 'R']
            genres = ['Action', 'Adventure', 'Black Comedy', 'Comedy',
                   'Concert/Performance', 'Documentary', 'Drama', 'Horror', 'Musical',
                   'Romantic Comedy', 'Thriller/Suspense', 'Western']

            base = alt.Chart(movies, width=200, height=200).mark_point(filled=True).transform_calculate(
                Rounded_IMDB_Rating = "floor(datum.IMDB_Rating)",
                Hundred_Million_Production =  "datum.Production_Budget > 100000000.0 ? 100 : 10",
                Release_Year = "year(datum.Release_Date)"
            ).transform_filter(
                alt.datum.IMDB_Rating > 0
            ).transform_filter(
                alt.FieldOneOfPredicate(field='MPAA_Rating', oneOf=ratings)
            ).encode(
                x=alt.X('Worldwide_Gross:Q', scale=alt.Scale(domain=(100000,10**9), clamp=True)),
                y='IMDB_Rating:Q',
                tooltip="Title:N"
            )

            # A slider filter
            year_slider = alt.binding_range(min=1969, max=2018, step=1, name="Release Year")
            slider_selection = alt.selection_point(bind=year_slider, fields=['Release_Year'])

            filter_year = base.add_params(
                slider_selection
            ).transform_filter(
                slider_selection
            ).properties(title="Slider Filtering")

            # A dropdown filter
            genre_dropdown = alt.binding_select(options=genres, name="Genre")
            genre_select = alt.selection_point(fields=['Major_Genre'], bind=genre_dropdown)

            filter_genres = base.add_params(
                genre_select
            ).transform_filter(
                genre_select
            ).properties(title="Dropdown Filtering")

            #color changing marks
            rating_radio = alt.binding_radio(options=ratings, name="Rating")
            rating_select = alt.selection_point(fields=['MPAA_Rating'], bind=rating_radio)

            rating_color_condition = alt.condition(
                rating_select,
                alt.Color('MPAA_Rating:N', legend=None),
                alt.value('lightgray')
            )

            highlight_ratings = base.add_params(
                rating_select
            ).encode(
                color=rating_color_condition
            ).properties(title="Radio Button Highlighting")

            # Boolean selection for format changes
            input_checkbox = alt.binding_checkbox(name="Big Budget Films ")
            checkbox_selection = alt.param(bind=input_checkbox)

            size_checkbox_condition = alt.condition(
                checkbox_selection,
                alt.Size('Hundred_Million_Production:Q'),
                alt.SizeValue(25)
            )

            budget_sizing = base.add_params(
                checkbox_selection
            ).encode(
                size=size_checkbox_condition
            ).properties(title="Checkbox Formatting")

            (filter_year | filter_genres) & (highlight_ratings | budget_sizing)