Class: BeaAsDataframe::GdpPerCountySector

Inherits:
Object
  • Object
show all
Includes:
HTTParty
Defined in:
lib/bea_as_dataframe/gdp_per_county_sector.rb

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ GdpPerCountySector

Returns a new instance of GdpPerCountySector.



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# File 'lib/bea_as_dataframe/gdp_per_county_sector.rb', line 11

def initialize(options={})
  @api_key = options[:api_key] || BeaAsDataframe.api_key
  @tmp_dir = options[:tmp_dir] || BeaAsDataframe.tmp_dir || '/tmp'
end

Instance Method Details

#fetch ⇒ Object 



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# File 'lib/bea_as_dataframe/gdp_per_county_sector.rb', line 16

def fetch()
  url = 'https://apps.bea.gov/regional/zip/CAGDP9.zip'
  my_file = File.join(@tmp_dir, 'CAGDP9.zip')
  all_areas_fn = nil

  resp = HTTParty.get(url)
  exit if resp.code == 404

  Tempfile.create(['CAGDP9','.zip'], @tmp_dir, mode: File::RDWR, binmode: true) do |fn_a|
    fn_a.write resp.parsed_response
    fn_a.rewind

    Zip::File.open(fn_a.path) do |z|
      z.each do |f|
        next if (f.name =~ /ALL_AREAS/).nil?
        content = f.get_input_stream.read.gsub(/^\s*/,'')

        Tempfile.create(['gdp_per_cnty_sector', '.csv'], @tmp_dir, mode: File::RDWR, binmode: true) do |fn|
          fnp = fn.path 
          fn.write content
          fn.rewind

          d_converter = proc {|field| field == '(D)' || field == '(NA)' ? 0 : field }
          CSV::Converters[:d] = d_converter

          dta = CSV.parse(File.read(fnp).encode("utf-8", "binary", :undef => :replace), 
            headers:true, converters: [:numeric, :d]).select{|r| r['GeoFIPS'].is_a?(Numeric) }

          keys = dta.first.headers
          vals = dta.map{|r| r.to_h.values }.transpose

          tmp_df = {}; (0..(keys.length-1)).to_a.each{|i| tmp_df[keys[i]] = vals[i] }
          tmp_df = Polars::DataFrame.new(tmp_df)

          return tmp_df
        end                     
      end
    end
  end   
end