將臺北市各區 GeoJSON下來，存成 CSV 格式後，手動塞入 Fusion Table。 https://www.google.com/fusiontables/DataSource?docid=1WhhrQFN0vopgc5jJdcC4myMF5C4gsirYO436Snln

catchAllArea.coffee

fs = require "fs"
crypto = require "crypto"
http = require "http"

NEWLINE = "\n"
FILENAME = "output.csv"
API = "http://poponfire.herokuapp.com/api/taipei/"

ALLAREA = [
  "中正區",
  "大同區",
  "中山區",
  "萬華區",
  "信義區",
  "松山區",
  "大安區",
  "南港區",
  "北投區",
  "內湖區",
  "士林區",
  "文山區"
]
ENCODEPROPERTIES = ['鄉鎮', '路段', '段號', '地號','分母', '分子']
NEEDPROPERTIES = ENCODEPROPERTIES.concat ['面積' , '管理者']

ALLAREA.forEach (area,index) ->
  JsonUrl = API + area
  http.get JsonUrl, (res, req) ->
    data = '';

    res.on 'data', (chunk) ->
      data += chunk
      return

    res.on 'end', ->
      geoJson = JSON.parse data
      features = geoJson.features

      features.forEach (feature, index) ->
        row = ""
        properties = feature.properties

        # appen properties
        NEEDPROPERTIES.forEach (property,index) ->
          row += properties[property] + "\t"
          return

        # append the hashid
        encoding_str = (ENCODEPROPERTIES.map (property) ->
          properties[property]).join('')

        console.log encoding_str
        shasum = crypto.createHash 'sha1'
        id = shasum.update(encoding_str, 'utf-8').digest('hex')
        row += id + "\t"

        # append the feature JSON object
        row += JSON.stringify(feature) + NEWLINE

        fs.appendFileSync(FILENAME, row)
        return
      return
    return
  return