Added nominal type to date
@@ -18,7 +18,7 @@ chart = alt.Chart(weather).mark_bar().encode(
range=['#e7ba42', '#c7c7c7', '#aec7e8', '#1f77b4', '#9467bd']
),
),
- x=alt.X('date',
+ x=alt.X('date:N',
axis=alt.Axis(title='Month of the Year'),
timeUnit='month',
),
