Streamlit `altair_chart` 图表不可交互
Streamlit `altair_chart` chart not interactive
我正在尝试绘制一个交互式财务图表,但当我使用 st.altair_chart
时它不会变为动态(altair
图表的默认设置)。这是代码:
base = alt.Chart(df).encode(
alt.X('Date:T', axis=alt.Axis(labelAngle=-45)),
color=alt.condition("datum.Open <= datum.Close",
alt.value("#06982d"), alt.value("#ae1325"))
)
rule = base.mark_rule().encode(alt.Y('Low:Q', title='Price',
scale=alt.Scale(zero=False)), alt.Y2('High:Q'))
bar = base.mark_bar().encode(alt.Y('Open:Q'), alt.Y2('Close:Q'))
st.altair_chart(rule + bar, use_container_width=True)
这段代码的结果如下:
(供参考,original题)
基本上,您必须显式地对标记进行分层并调用 .interactive()
以使轴交互:
base = alt.Chart(df).encode(
alt.X('Date:T', axis=alt.Axis(labelAngle=-45)),
color=alt.condition("datum.Open <= datum.Close",
alt.value("#06982d"), alt.value("#ae1325"))
)
chart = alt.layer(
base.mark_rule().encode(alt.Y('Low:Q', title='Price',
scale=alt.Scale(zero=False)), alt.Y2('High:Q')),
base.mark_bar().encode(alt.Y('Open:Q'), alt.Y2('Close:Q')),
).interactive()
st.altair_chart(chart, use_container_width=True)
我正在尝试绘制一个交互式财务图表,但当我使用 st.altair_chart
时它不会变为动态(altair
图表的默认设置)。这是代码:
base = alt.Chart(df).encode(
alt.X('Date:T', axis=alt.Axis(labelAngle=-45)),
color=alt.condition("datum.Open <= datum.Close",
alt.value("#06982d"), alt.value("#ae1325"))
)
rule = base.mark_rule().encode(alt.Y('Low:Q', title='Price',
scale=alt.Scale(zero=False)), alt.Y2('High:Q'))
bar = base.mark_bar().encode(alt.Y('Open:Q'), alt.Y2('Close:Q'))
st.altair_chart(rule + bar, use_container_width=True)
这段代码的结果如下:
(供参考,original题)
基本上,您必须显式地对标记进行分层并调用 .interactive()
以使轴交互:
base = alt.Chart(df).encode(
alt.X('Date:T', axis=alt.Axis(labelAngle=-45)),
color=alt.condition("datum.Open <= datum.Close",
alt.value("#06982d"), alt.value("#ae1325"))
)
chart = alt.layer(
base.mark_rule().encode(alt.Y('Low:Q', title='Price',
scale=alt.Scale(zero=False)), alt.Y2('High:Q')),
base.mark_bar().encode(alt.Y('Open:Q'), alt.Y2('Close:Q')),
).interactive()
st.altair_chart(chart, use_container_width=True)