:orphan:
:html_theme.sidebar_secondary.remove:

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

.. _gallery_simple_stacked_area_chart:


Simple Stacked Area Chart
-------------------------
This example shows how to make a simple stacked area chart.


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


    import altair as alt
    from vega_datasets import data

    source = data.iowa_electricity()

    alt.Chart(source).mark_area().encode(
        x="year:T",
        y="net_generation:Q",
        color="source:N"
    )
    # No channel encoding options are specified in this chart
    # so the code is the same as for the method-based syntax.


.. tab-set::

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

        .. code:: python


            import altair as alt
            from vega_datasets import data

            source = data.iowa_electricity()

            alt.Chart(source).mark_area().encode(
                x="year:T",
                y="net_generation:Q",
                color="source:N"
            )


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

        .. code:: python


            import altair as alt
            from vega_datasets import data

            source = data.iowa_electricity()

            alt.Chart(source).mark_area().encode(
                x="year:T",
                y="net_generation:Q",
                color="source:N"
            )
            # No channel encoding options are specified in this chart
            # so the code is the same as for the method-based syntax.