GoogleVisualr Gem - Geo Map Creation Example

controller.rb

# http://code.google.com/apis/chart/interactive/docs/gallery/geomap.html#Example
def geo_map

  # Regions Example
  data_table_regions = GoogleVisualr::DataTable.new
  data_table_regions.new_column('string'  , 'Country'   )
  data_table_regions.new_column('number'  , 'Popularity')
  data_table_regions.add_rows(6)
  data_table_regions.set_cell(0, 0, 'Germany'      )
  data_table_regions.set_cell(0, 1, 200)
  data_table_regions.set_cell(1, 0, 'United States')
  data_table_regions.set_cell(1, 1, 300)
  data_table_regions.set_cell(2, 0, 'Brazil'       )
  data_table_regions.set_cell(2, 1, 400)
  data_table_regions.set_cell(3, 0, 'Canada'       )
  data_table_regions.set_cell(3, 1, 500)
  data_table_regions.set_cell(4, 0, 'France'       )
  data_table_regions.set_cell(4, 1, 600)
  data_table_regions.set_cell(5, 0, 'RU'           )
  data_table_regions.set_cell(5, 1, 700)

  opts   = { :dataMode => 'regions' }
  @chart_regions = GoogleVisualr::Interactive::GeoMap.new(data_table_regions, opts)

  # Markers Example
  data_table_markers = GoogleVisualr::DataTable.new
  data_table_markers.new_column('string'  , 'Country'   )
  data_table_markers.new_column('number'  , 'Popularity')
  data_table_markers.add_rows(6)
  data_table_markers.set_cell(0, 0, 'New York'     )
  data_table_markers.set_cell(0, 1, 200)
  data_table_markers.set_cell(1, 0, 'Boston'       )
  data_table_markers.set_cell(1, 1, 300)
  data_table_markers.set_cell(2, 0, 'Miami'        )
  data_table_markers.set_cell(2, 1, 400)
  data_table_markers.set_cell(3, 0, 'Chicago'      )
  data_table_markers.set_cell(3, 1, 500)
  data_table_markers.set_cell(4, 0, 'Los Angeles'  )
  data_table_markers.set_cell(4, 1, 600)
  data_table_markers.set_cell(5, 0, 'Houston'      )
  data_table_markers.set_cell(5, 1, 700)

  opts   = { :dataMode => 'markers', :region => 'US', :colors => ['0xFF8747', '0xFFB581', '0xc06000'] }
  @chart_markers = GoogleVisualr::Interactive::GeoMap.new(data_table_markers, opts)

end

view.html.erb

<!-- Regions Display Style -->
<div id='chart_regions'></div>
<%= render_chart @chart_regions, 'chart_regions' %>

<!-- Markers Display Style -->
<div id='chart_markers'></div>
<%= render_chart @chart_markers, 'chart_markers' %>