.. 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::
    :code-below:

    

    import altair as alt
    from vega_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="cumulative_count:Q"
    )


.. toctree::
   :hidden: