DOC: Fix interval selection bug
@@ -13,15 +13,19 @@ source = data.sp500.url
brush = alt.selection(type='interval', encodings=['x'])
-upper = alt.Chart(source).mark_area().encode(
- alt.X('date:T', scale=alt.Scale(domain=brush)),
+base = alt.Chart(source).mark_area().encode(
+ x = 'date:T',
y = 'price:Q'
).properties(
width=600,
height=200
)
-lower = upper.properties(
+upper = base.encode(
+ alt.X('date:T', scale=alt.Scale(domain=brush))
+)
+
+lower = base.properties(
height=60
).add_selection(brush)
