:orphan:
:html_theme.sidebar_secondary.remove:

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

.. _gallery_window_rank:


Window Rank Line Chart
----------------------
This example shows the Group F rankings in the 2018 World Cup after each matchday. 
A window transformation is used to rank each after each match day, sorting by points and difference.


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


    import altair as alt
    import pandas as pd

    source = pd.DataFrame(
        [
            {"team": "Germany", "matchday": 1, "point": 0, "diff": -1},
            {"team": "Germany", "matchday": 2, "point": 3, "diff": 0},
            {"team": "Germany", "matchday": 3, "point": 3, "diff": -2},
            {"team": "Mexico", "matchday": 1, "point": 3, "diff": 1},
            {"team": "Mexico", "matchday": 2, "point": 6, "diff": 2},
            {"team": "Mexico", "matchday": 3, "point": 6, "diff": -1},
            {"team": "South Korea", "matchday": 1, "point": 0, "diff": -1},
            {"team": "South Korea", "matchday": 2, "point": 0, "diff": -2},
            {"team": "South Korea", "matchday": 3, "point": 3, "diff": 0},
            {"team": "Sweden", "matchday": 1, "point": 3, "diff": 1},
            {"team": "Sweden", "matchday": 2, "point": 3, "diff": 0},
            {"team": "Sweden", "matchday": 3, "point": 6, "diff": 3},
        ]
    )

    color_scale = alt.Scale(
        domain=["Germany", "Mexico", "South Korea", "Sweden"],
        range=["#000000", "#127153", "#C91A3C", "#0C71AB"],
    )

    alt.Chart(source).mark_line().encode(
        x="matchday:O", y="rank:O", color=alt.Color("team:N", scale=color_scale)
    ).transform_window(
        rank="rank()",
        sort=[
            alt.SortField("point", order="descending"),
            alt.SortField("diff", order="descending"),
        ],
        groupby=["matchday"],
    ).properties(title="World Cup 2018: Group F Rankings")


.. tab-set::

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

        .. code:: python


            import altair as alt
            import pandas as pd

            source = pd.DataFrame(
                [
                    {"team": "Germany", "matchday": 1, "point": 0, "diff": -1},
                    {"team": "Germany", "matchday": 2, "point": 3, "diff": 0},
                    {"team": "Germany", "matchday": 3, "point": 3, "diff": -2},
                    {"team": "Mexico", "matchday": 1, "point": 3, "diff": 1},
                    {"team": "Mexico", "matchday": 2, "point": 6, "diff": 2},
                    {"team": "Mexico", "matchday": 3, "point": 6, "diff": -1},
                    {"team": "South Korea", "matchday": 1, "point": 0, "diff": -1},
                    {"team": "South Korea", "matchday": 2, "point": 0, "diff": -2},
                    {"team": "South Korea", "matchday": 3, "point": 3, "diff": 0},
                    {"team": "Sweden", "matchday": 1, "point": 3, "diff": 1},
                    {"team": "Sweden", "matchday": 2, "point": 3, "diff": 0},
                    {"team": "Sweden", "matchday": 3, "point": 6, "diff": 3},
                ]
            )

            color_scale = alt.Scale(
                domain=["Germany", "Mexico", "South Korea", "Sweden"],
                range=["#000000", "#127153", "#C91A3C", "#0C71AB"],
            )

            alt.Chart(source).mark_line().encode(
                x="matchday:O", y="rank:O", color=alt.Color("team:N").scale(color_scale)
            ).transform_window(
                rank="rank()",
                sort=[
                    alt.SortField("point", order="descending"),
                    alt.SortField("diff", order="descending"),
                ],
                groupby=["matchday"],
            ).properties(title="World Cup 2018: Group F Rankings")


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

        .. code:: python


            import altair as alt
            import pandas as pd

            source = pd.DataFrame(
                [
                    {"team": "Germany", "matchday": 1, "point": 0, "diff": -1},
                    {"team": "Germany", "matchday": 2, "point": 3, "diff": 0},
                    {"team": "Germany", "matchday": 3, "point": 3, "diff": -2},
                    {"team": "Mexico", "matchday": 1, "point": 3, "diff": 1},
                    {"team": "Mexico", "matchday": 2, "point": 6, "diff": 2},
                    {"team": "Mexico", "matchday": 3, "point": 6, "diff": -1},
                    {"team": "South Korea", "matchday": 1, "point": 0, "diff": -1},
                    {"team": "South Korea", "matchday": 2, "point": 0, "diff": -2},
                    {"team": "South Korea", "matchday": 3, "point": 3, "diff": 0},
                    {"team": "Sweden", "matchday": 1, "point": 3, "diff": 1},
                    {"team": "Sweden", "matchday": 2, "point": 3, "diff": 0},
                    {"team": "Sweden", "matchday": 3, "point": 6, "diff": 3},
                ]
            )

            color_scale = alt.Scale(
                domain=["Germany", "Mexico", "South Korea", "Sweden"],
                range=["#000000", "#127153", "#C91A3C", "#0C71AB"],
            )

            alt.Chart(source).mark_line().encode(
                x="matchday:O", y="rank:O", color=alt.Color("team:N", scale=color_scale)
            ).transform_window(
                rank="rank()",
                sort=[
                    alt.SortField("point", order="descending"),
                    alt.SortField("diff", order="descending"),
                ],
                groupby=["matchday"],
            ).properties(title="World Cup 2018: Group F Rankings")