Question

我正在尝试使用以下代码在Altair中绘制图表。

tot_matches_played = alt.Chart(mpt).mark_bar().encode(
  alt.X('Team',axis=alt.Axis(title='Teams Played in IPL'), sort=alt.EncodingSortField(field='Number_of_matches_played:Q', op='count', order='ascending')),  
  alt.Y('Number_of_matches_played:Q' ),
  tooltip=['sum(Number_of_matches_played)']
)

但是由于工具提示名称很怪异，所以我想在图表上使用“ as”重命名它，如下所示。

tot_matches_played = alt.Chart(mpt).mark_bar().encode(
  alt.X('Team',axis=alt.Axis(title='Teams Played in IPL'), sort=alt.EncodingSortField(field='Number_of_matches_played:Q', op='count', order='ascending')),  
  alt.Y('Number_of_matches_played:Q' ),
  tooltip=['sum(Number_of_matches_played)' as total_matches]
)

如何重命名工具提示，以便用户在查看图表时可以更容易理解。

Answer 1

您可以通过title来调整alt.Tooltip的输出：

tot_matches_played = alt.Chart(mpt).mark_bar().encode(
  alt.X('Team',axis=alt.Axis(title='Teams Played in IPL'), sort=alt.EncodingSortField(field='Number_of_matches_played:Q', op='count', order='ascending')),  
  alt.Y('Number_of_matches_played:Q' ),
  tooltip=[alt.Tooltip('sum(Number_of_matches_played)', title='matches played')]
)

Answer 2

作为jakevdp答案的附录，如果有人遇到此问题并且需要为两个不同的功能（如我对地图所做的操作）做一个替代标题，则代码的“ tooltip =“部分将像这样工作： / p>

<div class="collection">
<a href="#!" class="collection-item">Alvin</a>
</div>

在Altair中重命名工具提示

2 个答案: