
:orphan:
:html_theme.sidebar_secondary.remove:

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

.. _gallery_line_chart_with_generator:


Line Chart with Sequence Generator
----------------------------------
This examples shows how to create multiple lines using the sequence generator.


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



    import altair as alt

    source = alt.sequence(start=0, stop=12.7, step=0.1, as_='x')

    alt.Chart(source).mark_line().transform_calculate(
        sin='sin(datum.x)',
        cos='cos(datum.x)'
    ).transform_fold(
        ['sin', 'cos']
    ).encode(
        x='x:Q', 
        y='value:Q', 
        color='key: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

            source = alt.sequence(start=0, stop=12.7, step=0.1, as_='x')

            alt.Chart(source).mark_line().transform_calculate(
                sin='sin(datum.x)',
                cos='cos(datum.x)'
            ).transform_fold(
                ['sin', 'cos']
            ).encode(
                x='x:Q', 
                y='value:Q', 
                color='key:N'
            )


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

        .. code:: python



            import altair as alt

            source = alt.sequence(start=0, stop=12.7, step=0.1, as_='x')

            alt.Chart(source).mark_line().transform_calculate(
                sin='sin(datum.x)',
                cos='cos(datum.x)'
            ).transform_fold(
                ['sin', 'cos']
            ).encode(
                x='x:Q', 
                y='value:Q', 
                color='key:N'
            )
            # No channel encoding options are specified in this chart
            # so the code is the same as for the method-based syntax.
