added in the * instead of the name
@@ -12,5 +12,5 @@ source = data.movies()
chart = alt.Chart(source).mark_circle().encode(
x = alt.X('IMDB_Rating', bin = alt.BinParams(maxbins=10)),
y = alt.Y('Rotten_Tomatoes_Rating', bin = alt.BinParams(maxbins=10)),
- size = 'count(IMDB_Rating)'
+ size = 'count(*):Q'
)
