
:orphan:
:html_theme.sidebar_secondary.remove:

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

.. _gallery_line_percent:


Line Chart with Percent axis
----------------------------
This example shows how to format the tick labels of the y-axis of a chart as percentages.


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


    import altair as alt
    from altair.datasets import data

    source = data.jobs.url

    alt.Chart(source).mark_line().encode(
        alt.X('year:O'),
        alt.Y('perc:Q', axis=alt.Axis(format='%')),
        color='sex:N'
    ).transform_filter(
        alt.datum.job == 'Welder'
    )


.. tab-set::

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

        .. code:: python


            import altair as alt
            from altair.datasets import data

            source = data.jobs.url

            alt.Chart(source).mark_line().encode(
                alt.X('year:O'),
                alt.Y('perc:Q').axis(format='%'),
                alt.Color('sex:N')
            ).transform_filter(
                alt.datum.job == 'Welder'
            )


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

        .. code:: python


            import altair as alt
            from altair.datasets import data

            source = data.jobs.url

            alt.Chart(source).mark_line().encode(
                alt.X('year:O'),
                alt.Y('perc:Q', axis=alt.Axis(format='%')),
                color='sex:N'
            ).transform_filter(
                alt.datum.job == 'Welder'
            )
