Class: USGeo::County

Inherits:
BaseRecord
  • Object
show all
Includes:
Area, Population
Defined in:
lib/us_geo/county.rb

Overview

County or county equivalent. Counties are composed of zero or more ZCTA’s and may belong to a CBSA. The county’s significance withing the CBSA is indicated by the central flag which indicates if it is a central or outlying county.

Constant Summary

Constants inherited from BaseRecord

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

Instance Attribute Summary collapse

Attributes included from Area

#land_area, #water_area

Attributes included from Population

#housing_units, #population

Attributes inherited from BaseRecord

#status, #updated_at

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Area

#land_area_km, #percent_land, #total_area, #water_area_km

Methods included from Population

#housing_density, #housing_density_km, #population_density, #population_density_km

Methods inherited from BaseRecord

#imported?, #manual?, #removed?

Instance Attribute Details

#fips_class_code ⇒ String

Returns 2-character FIPS class code.

Returns:

  • (String) —

    2-character FIPS class code.




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

#geoid ⇒ String

Returns 5-digit code for the county.

Returns:

  • (String) —

    5-digit code for the county.




# File 'lib/us_geo/county.rb', line 40

#name ⇒ String

Returns Name of the county.

Returns:

  • (String) —

    Name of the county.




# File 'lib/us_geo/county.rb', line 43

#short_name ⇒ String

Returns Short name of the county.

Returns:

  • (String) —

    Short name of the county.




# File 'lib/us_geo/county.rb', line 46

#state_code ⇒ String

Returns 2-letter code for the state.

Returns:

  • (String) —

    2-letter code for the state.




# File 'lib/us_geo/county.rb', line 49

#time_zone_2_name ⇒ String

Returns Time zone name.

Returns:

  • (String) —

    Time zone name.




# File 'lib/us_geo/county.rb', line 58

#time_zone_name ⇒ String

Returns Time zone name.

Returns:

  • (String) —

    Time zone name.




# File 'lib/us_geo/county.rb', line 55

Class Method Details

.load!(uri = nil) ⇒ Object 



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# File 'lib/us_geo/county.rb', line 69

def load!(uri = nil)
  location = data_uri(uri || "counties.csv")

  import! do
    load_data_file(location) do |row|
      load_record!(geoid: row["GEOID"]) do |record|
        record.gnis_id = row["GNIS ID"]
        record.name = row["Name"]
        record.short_name = row["Short Name"]
        record.state_code = row["State"]
        record.cbsa_geoid = row["CBSA"]
        record.metropolitan_division_geoid = row["Metropolitan Division"]
        record.time_zone_name = row["Time Zone"]
        record.time_zone_2_name = row["Time Zone 2"]
        record.fips_class_code = row["FIPS Class"]
        record.central = (row["Central"] == "T")
        record.population = row["Population"]
        record.housing_units = row["Housing Units"]
        record.land_area = row["Land Area"]
        record.water_area = row["Water Area"]
        record.lat = row["Latitude"]
        record.lng = row["Longitude"]
      end
    end
  end
end

Instance Method Details

#central? ⇒ Boolean

Returns True if the county is a central county in the CBSA.

Returns:

  • (Boolean) —

    True if the county is a central county in the CBSA.




# File 'lib/us_geo/county.rb', line 61

#combined_statistical_area ⇒ USGeo::CombinedStatisticalArea

Returns Combined statistical area that the county belongs to.

Returns:



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# File 'lib/us_geo/county.rb', line 66

delegate :combined_statistical_area, to: :core_based_statistical_area, allow_nil: true

#county_fips ⇒ Object 



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# File 'lib/us_geo/county.rb', line 108

def county_fips
  geoid[2, 3]
end

#full_name ⇒ String

Full name of the county with the state.

Returns:

  • (String) 


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# File 'lib/us_geo/county.rb', line 100

def full_name
  "#{name}, #{state_code}"
end

#metropolitan_area ⇒ Object

Return the CBSA only if it is a metropolitan area.



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# File 'lib/us_geo/county.rb', line 113

def metropolitan_area
  core_based_statistical_area if core_based_statistical_area&.metropolitan?
end

#outlying? ⇒ Boolean

True if the county is an outlying county in the CBSA.

Returns:

  • (Boolean) 


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# File 'lib/us_geo/county.rb', line 137

def outlying?
  !central?
end

#state_fips ⇒ Object 



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# File 'lib/us_geo/county.rb', line 104

def state_fips
  geoid[0, 2]
end

#time_zone ⇒ ActiveSupport::TimeZone?

Return a single time zone for the county. If the county has two time zones, only one is returned.

Returns:

  • (ActiveSupport::TimeZone, nil) 


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# File 'lib/us_geo/county.rb', line 121

def time_zone
  ActiveSupport::TimeZone[time_zone_name] if time_zone_name
end

#time_zones ⇒ Array<ActiveSupport::TimeZone>

Get all time zones for the county.

Returns:

  • (Array<ActiveSupport::TimeZone>) 


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# File 'lib/us_geo/county.rb', line 128

def time_zones
  [time_zone_name, time_zone_2_name].compact.collect do |tz_name|
    ActiveSupport::TimeZone[tz_name]
  end.compact
end