DOC: add origin to tooltip and remove lat and long.
@@ -54,7 +54,7 @@ points = alt.Chart(flights_airport).mark_circle().encode(
longitude="longitude:Q",
size=alt.Size("routes:Q", scale=alt.Scale(range=[0, 1000]), legend=None),
order=alt.Order("routes:Q", sort="descending"),
- tooltip=['latitude:Q', 'longitude:Q', 'routes:Q']
+ tooltip=["origin:N", "routes:Q"]
).transform_aggregate(
routes="count()",
groupby=["origin"]
