- chartpack:
    format: gcubed-chartpack
    version: 1.4.0
    title: Activity by region and year
    sector_selection_dimensions:
    - sectors
    - layers
    defaults:
      start_year: 2025
      end_year: 2035
- chart:
    title: Activity by region and year
    chart_type: heatmap
    show_labels: true
    x_dimension: year
    y_dimension: regions
    x_axis:
      label: Year
    y_axis:
      label: Region
    color_axis:
      min: 95
      max: 115
      midpoint: 100
      palette: semantic-diverging
    caption: A semantic diverging palette anchors the authored midpoint; a time-axis heatmap has no Year control.
    series:
    - variable_prefix: SYNTHINDEX
      selectors:
        regions: all