
:orphan:
:html_theme.sidebar_secondary.remove:

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

.. _gallery_cumulative_count_chart:


Cumulative Count Chart
----------------------
This example shows an area chart with cumulative count.
Adapted from https://vega.github.io/vega-lite/examples/area_cumulative_freq.html



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



    import altair as alt
    from altair.datasets import data

    source = data.movies.url

    alt.Chart(source).transform_window(
        cumulative_count="count()",
        sort=[{"field": "IMDB Rating"}],
    ).mark_area().encode(
        x="IMDB Rating:Q",
        y=alt.Y("cumulative_count:Q", stack=False)
    )


.. tab-set::

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

        .. code:: python



            import altair as alt
            from altair.datasets import data

            source = data.movies.url

            alt.Chart(source).transform_window(
                cumulative_count="count()",
                sort=[{"field": "IMDB Rating"}],
            ).mark_area().encode(
                x="IMDB Rating:Q",
                y=alt.Y("cumulative_count:Q").stack(False)
            )


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

        .. code:: python



            import altair as alt
            from altair.datasets import data

            source = data.movies.url

            alt.Chart(source).transform_window(
                cumulative_count="count()",
                sort=[{"field": "IMDB Rating"}],
            ).mark_area().encode(
                x="IMDB Rating:Q",
                y=alt.Y("cumulative_count:Q", stack=False)
            )
