Class: USGeo::CoreBasedStatisticalArea

Inherits:
BaseRecord
  • Object
show all
Includes:
Demographics
Defined in:
lib/us_geo/core_based_statistical_area.rb

Overview

Core based statistical area composed of one or more counties anchored by an urban center. Includes both metropolitan (population > 50,000) and micropolitan (population > 10,000 but < 50,000) areas.

Direct Known Subclasses

MetropolitanArea, MicropolitanArea

Constant Summary

Constants inherited from BaseRecord

BaseRecord::STATUS_IMPORTED, BaseRecord::STATUS_MANUAL, BaseRecord::STATUS_REMOVED

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Demographics

#percent_land, #population_density, #total_area

Methods inherited from BaseRecord

#imported?, #manual?, #removed?

Class Method Details

.load!(uri = nil) ⇒ Object 



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# File 'lib/us_geo/core_based_statistical_area.rb', line 27

def load!(uri = nil)
  location = data_uri(uri || "core_based_statistical_areas.csv")
  
  import! do
    load_data_file(location) do |row|
      load_record!(geoid: row["GEOID"]) do |record|
        record.type = (row["Population"].to_i >= 50_000 ? "MetropolitanArea" : "MicropolitanArea")
        record.name = row["Name"]
        record.csa_geoid = row["CSA"]
        record.population = row["Population"]
        record.housing_units = row["Housing Units"]
        record.land_area = area_meters_to_miles(row["Land Area"])
        record.water_area = area_meters_to_miles(row["Water Area"])
        record.lat = row["Latitude"]
        record.lng = row["Longitude"]
      end
    end
  end
end

Instance Method Details

#metropolitan? ⇒ Boolean

Returns:

  • (Boolean)

Raises:

  • (NotImplementedError) 


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# File 'lib/us_geo/core_based_statistical_area.rb', line 48

def metropolitan?
  raise NotImplementedError
end

#micropolitan? ⇒ Boolean

Returns:

  • (Boolean)

Raises:

  • (NotImplementedError) 


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# File 'lib/us_geo/core_based_statistical_area.rb', line 52

def micropolitan?
  raise NotImplementedError
end