shapely_union.ipynb

{
 "metadata": {
  "name": "",
  "signature": "sha256:fdb617cb23c56e3fd4416064e62ebde6531bd1651bdb97f89b2b371a0eeaab07"
 },
 "nbformat": 3,
 "nbformat_minor": 0,
 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "import json\n",
      "\n",
      "import folium\n",
      "import requests\n",
      "from shapely.geometry import shape, mapping"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 1
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "eparhies = {\n",
      "    '\u041c\u0438\u043d\u0441\u043a\u0430\u044f \u0435\u043f\u0430\u0440\u0445\u0438\u044f': [\n",
      "        '\u041c\u0438\u043d\u0441\u043a\u0438\u0439 \u0440\u0430\u0439\u043e\u043d',\n",
      "    ],\n",
      "    '\u0411\u0440\u0435\u0441\u0442\u0441\u043a\u0430\u044f \u0435\u043f\u0430\u0440\u0445\u0438\u044f': [\n",
      "        '\u0411\u0440\u0435\u0441\u0442\u0441\u043a\u0438\u0439 \u0440\u0430\u0439\u043e\u043d',\n",
      "        '\u0411\u0435\u0440\u0451\u0437\u043e\u0432\u0441\u043a\u0438\u0439 \u0440\u0430\u0439\u043e\u043d',\n",
      "        '\u0414\u0440\u043e\u0433\u0438\u0447\u0438\u043d\u0441\u043a\u0438\u0439 \u0440\u0430\u0439\u043e\u043d',\n",
      "        '\u0416\u0430\u0431\u0438\u043d\u043a\u043e\u0432\u0441\u043a\u0438\u0439 \u0440\u0430\u0439\u043e\u043d',\n",
      "        '\u041a\u0430\u043c\u0435\u043d\u0435\u0446\u043a\u0438\u0439 \u0440\u0430\u0439\u043e\u043d',\n",
      "        '\u041a\u043e\u0431\u0440\u0438\u043d\u0441\u043a\u0438\u0439 \u0440\u0430\u0439\u043e\u043d',\n",
      "        '\u041c\u0430\u043b\u043e\u0440\u0438\u0442\u0441\u043a\u0438\u0439 \u0440\u0430\u0439\u043e\u043d',\n",
      "        '\u041f\u0440\u0443\u0436\u0430\u043d\u0441\u043a\u0438\u0439 \u0440\u0430\u0439\u043e\u043d',\n",
      "    ],\n",
      "    '\u0412\u0438\u0442\u0435\u0431\u0441\u043a\u0430\u044f \u0435\u043f\u0430\u0440\u0445\u0438\u044f': [\n",
      "        '\u0412\u0438\u0442\u0435\u0431\u0441\u043a\u0438\u0439 \u0440\u0430\u0439\u043e\u043d',\n",
      "    ],\n",
      "    '\u0413\u043e\u043c\u0435\u043b\u044c\u0441\u043a\u0430\u044f \u0435\u043f\u0430\u0440\u0445\u0438\u044f': [\n",
      "        '\u0413\u043e\u043c\u0435\u043b\u044c\u0441\u043a\u0438\u0439 \u0440\u0430\u0439\u043e\u043d',\n",
      "    ],\n",
      "    '\u0413\u0440\u043e\u0434\u043d\u0435\u043d\u0441\u043a\u0430\u044f \u0435\u043f\u0430\u0440\u0445\u0438\u044f': [\n",
      "        '\u0413\u0440\u043e\u0434\u043d\u0435\u043d\u0441\u043a\u0438\u0439 \u0440\u0430\u0439\u043e\u043d',\n",
      "    ],\n",
      "    '\u041c\u043e\u0433\u0438\u043b\u0451\u0432\u0441\u043a\u0430\u044f \u0435\u043f\u0430\u0440\u0445\u0438\u044f': [\n",
      "        '\u041c\u043e\u0433\u0438\u043b\u0451\u0432\u0441\u043a\u0438\u0439 \u0440\u0430\u0439\u043e\u043d',\n",
      "    ],\n",
      "    '\u041d\u043e\u0432\u043e\u0433\u0440\u0443\u0434\u0441\u043a\u0430\u044f \u0435\u043f\u0430\u0440\u0445\u0438\u044f': [\n",
      "        '\u041d\u043e\u0432\u043e\u0433\u0440\u0443\u0434\u0441\u043a\u0438\u0439 \u0440\u0430\u0439\u043e\u043d',\n",
      "    ],\n",
      "    '\u041f\u0438\u043d\u0441\u043a\u0430\u044f \u0435\u043f\u0430\u0440\u0445\u0438\u044f': [\n",
      "        '\u041f\u0438\u043d\u0441\u043a\u0438\u0439 \u0440\u0430\u0439\u043e\u043d',\n",
      "    ],\n",
      "    '\u041f\u043e\u043b\u043e\u0446\u043a\u0430\u044f \u0435\u043f\u0430\u0440\u0438\u0445\u044f': [\n",
      "        '\u041f\u043e\u043b\u043e\u0446\u043a\u0438\u0439 \u0440\u0430\u0439\u043e\u043d',\n",
      "    ],\n",
      "    '\u0422\u0443\u0440\u043e\u0432\u0441\u043a\u0430\u044f \u0435\u043f\u0430\u0440\u0445\u0438\u044f': [\n",
      "        '\u0422\u0443\u0440\u043e\u0432\u0441\u043a\u0438\u0439 \u0440\u0430\u0439\u043e\u043d',\n",
      "    ],\n",
      "}"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 2
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "base_url = 'http://odata.by/api/action/datastore/search.json?resource_id=30685f8b-608c-4e1e-b15e-41cec3f124c7'\n",
      "query = '&filters[subregion]={}&fields=geojson'\n",
      "\n",
      "features = []\n",
      "\n",
      "for eparhy, subregions in eparhies.items():\n",
      "    response = requests.get(base_url + query.format(','.join(subregions))).json()\n",
      "    geometries_union = None\n",
      "    for record in response['result']['records']:\n",
      "        geometry = shape(json.loads(record['geojson']))\n",
      "        if not geometries_union:\n",
      "            geometries_union = geometry\n",
      "        else:\n",
      "            geometries_union = geometries_union.union(geometry)\n",
      "    if geometries_union:\n",
      "        features.append({\n",
      "            'type': 'Feature',\n",
      "            'geometry': mapping(geometries_union),\n",
      "            'properties': {\n",
      "                'name': eparhy,\n",
      "            },\n",
      "        })\n",
      "    \n",
      "geojson = json.dumps({\n",
      "    'type': 'FeatureCollection',\n",
      "    'features': features\n",
      "})"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 3
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "map = folium.Map(location=[53.55, 27.33], zoom_start=6)\n",
      "map.geo_json(geo_str=geojson)\n",
      "map.create_map()\n",
      "map.display()"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "html": [
        "<iframe class=\"folium-iframe\" src=\"files/map.html\" style=\"width: 960px; height: 500px; border: none; margin-left: 75px;\" scrolling=\"no\"></iframe>"
       ],
       "metadata": {},
       "output_type": "display_data",
       "text": [
        "<IPython.core.display.HTML at 0x7f8ef03d3550>"
       ]
      }
     ],
     "prompt_number": 4
    }
   ],
   "metadata": {}
  }
 ]
}