importaltairasaltfromvega_datasetsimportdatasource=data.seattle_weather()color=alt.Color('weather:N').scale(domain=['sun','fog','drizzle','rain','snow'],range=['#e7ba52','#a7a7a7','#aec7e8','#1f77b4','#9467bd'])# We create two selections:# - a brush that is active on the top panel# - a multi-click that is active on the bottom panelbrush=alt.selection_interval(encodings=['x'])click=alt.selection_point(encodings=['color'])# Top panel is scatter plot of temperature vs timepoints=alt.Chart().mark_point().encode(alt.X('monthdate(date):T').title('Date'),alt.Y('temp_max:Q').title('Maximum Daily Temperature (C)').scale(domain=[-5,40]),alt.Size('precipitation:Q').scale(range=[5,200]),color=alt.when(brush).then(color).otherwise(alt.value("lightgray")),).properties(width=550,height=300).add_params(brush).transform_filter(click)# Bottom panel is a bar chart of weather typebars=alt.Chart().mark_bar().encode(x='count()',y='weather:N',color=alt.when(click).then(color).otherwise(alt.value("lightgray")),).transform_filter(brush).properties(width=550,).add_params(click)alt.vconcat(points,bars,data=source,title="Seattle Weather: 2012-2015")

importaltairasaltfromvega_datasetsimportdatasource=data.seattle_weather()scale=alt.Scale(domain=['sun','fog','drizzle','rain','snow'],range=['#e7ba52','#a7a7a7','#aec7e8','#1f77b4','#9467bd'])color=alt.Color('weather:N',scale=scale)# We create two selections:# - a brush that is active on the top panel# - a multi-click that is active on the bottom panelbrush=alt.selection_interval(encodings=['x'])click=alt.selection_point(encodings=['color'])# Top panel is scatter plot of temperature vs timepoints=alt.Chart().mark_point().encode(alt.X('monthdate(date):T',title='Date'),alt.Y('temp_max:Q',title='Maximum Daily Temperature (C)',scale=alt.Scale(domain=[-5,40])),color=alt.when(brush).then(color).otherwise(alt.value("lightgray")),size=alt.Size('precipitation:Q',scale=alt.Scale(range=[5,200]))).properties(width=550,height=300).add_params(brush).transform_filter(click)# Bottom panel is a bar chart of weather typebars=alt.Chart().mark_bar().encode(x='count()',y='weather:N',color=alt.when(click).then(color).otherwise(alt.value("lightgray")),).transform_filter(brush).properties(width=550,).add_params(click)alt.vconcat(points,bars,data=source,title="Seattle Weather: 2012-2015")