使用 Altair 创建包含 3 个图表的合并图表,但第一个标题未正确对齐

Using Altair to create a merged chart with 3 charts but the first title is not aligning properly

这是我创建的图表:

但这就是我想要的样子:

“Top Third”的标题没有居中,但当我尝试调整标题对齐方式时,出现无法使用 hconcat 配置的错误。这是可视化的部分代码:

chart_top = (text_top + bars_top).properties(
    width=80,
    height=180,
    title="Top third",

)

chart_middle = (text_middle + bars_middle).properties(
    width=80,
    height=180,
    title="Middle third",


)

chart_bottom = (text_bottom + bars_bottom).properties(
    width=80,
    height=180,
    title="Bottom third",

)


merge = alt.hconcat(chart_top, chart_middle, chart_bottom).configure_scale(
    bandPaddingInner=0.2
).configure_view(
    strokeWidth=0
).properties(
    title={"text":["How People Rate the 'Star Wars' Movies"],
    "subtitle":["How often each film was rated in the top, middle and bottom third",
                '(by 471 respondents who have seen all six films)']}
).configure_title(
    fontSize=24, align='left', fontWeight='bold', anchor="start", subtitleFontWeight='lighter'
).configure_axis(
    labelFontSize=14)


alt.themes.enable('fivethirtyeight')

merge

您可以在最左侧的图表上使用 alt.TitleParams,并使用 dx 手动设置偏移量或 anchor=end 右对齐:

chart_top = (text_top + bars_top).properties(
    title=alt.TitleParams("Top third", dx=100))

您也可以创建一个只包含标签的空图表。