text: """
  Seattle Weather Heatmap
  -----------------------
  This example shows the 2010 daily high temperature (F) in Seattle, WA.
  """
  # category: case studies
  import altair as alt
  from vega_datasets import data
  
  # Since the data is more than 5,000 rows we'll import it from a URL
  source = data.seattle_temps.url
  
  alt.Chart(
      source,
      title="2010 Daily High Temperature (F) in Seattle, WA"
  ).mark_rect().encode(
      x='date(date):O',
      y='month(date):O',
      color=alt.Color('max(temp):Q', scale=alt.Scale(scheme="inferno")),
      tooltip=[
          alt.Tooltip('monthdate(date):T', title='Date'),
          alt.Tooltip('max(temp):Q', title='Max Temp')
      ]
  ).properties(width=550)
  