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  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "[![image](https://jupyterlite.rtfd.io/en/latest/_static/badge.svg)](https://demo.leafmap.org/lab/index.html?path=maplibre/3d_choropleth.ipynb)\n",
    "[![image](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/opengeos/leafmap/blob/master/docs/maplibre/3d_choropleth.ipynb)\n",
    "[![image](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/opengeos/leafmap/HEAD)\n",
    "\n",
    "**Create a 3D choropleth map of Europe with countries extruded**\n",
    "\n",
    "This source code of this example is adapted from the MapTiler SDK JS example - [Create a 3D choropleth map of Europe with countries extruded](https://docs.maptiler.com/sdk-js/examples/fill-extrusion).\n",
    "\n",
    "Uncomment the following line to install [leafmap](https://leafmap.org) if needed."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# %pip install \"leafmap[maplibre]\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import leafmap.maplibregl as leafmap"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "To run this notebook, you will need an [API key](https://docs.maptiler.com/cloud/api/authentication-key/) from [MapTiler](https://www.maptiler.com/cloud/). Once you have the API key, you can uncomment the following code block and replace `YOUR_API_KEY` with your actual API key. Then, run the code block code to set the API key as an environment variable."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# import os\n",
    "# os.environ[\"MAPTILER_KEY\"] = \"YOUR_API_KEY\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "m = leafmap.Map(center=[19.43, 49.49], zoom=3, pitch=60, style=\"basic\")\n",
    "source = {\n",
    "    \"type\": \"geojson\",\n",
    "    \"data\": \"https://docs.maptiler.com/sdk-js/assets/Mean_age_of_women_at_first_marriage_in_2019.geojson\",\n",
    "}\n",
    "m.add_source(\"countries\", source)\n",
    "layer = {\n",
    "    \"id\": \"eu-countries\",\n",
    "    \"source\": \"countries\",\n",
    "    \"type\": \"fill-extrusion\",\n",
    "    \"paint\": {\n",
    "        \"fill-extrusion-color\": [\n",
    "            \"interpolate\",\n",
    "            [\"linear\"],\n",
    "            [\"get\", \"age\"],\n",
    "            23.0,\n",
    "            \"#fff5eb\",\n",
    "            24.0,\n",
    "            \"#fee6ce\",\n",
    "            25.0,\n",
    "            \"#fdd0a2\",\n",
    "            26.0,\n",
    "            \"#fdae6b\",\n",
    "            27.0,\n",
    "            \"#fd8d3c\",\n",
    "            28.0,\n",
    "            \"#f16913\",\n",
    "            29.0,\n",
    "            \"#d94801\",\n",
    "            30.0,\n",
    "            \"#8c2d04\",\n",
    "        ],\n",
    "        \"fill-extrusion-opacity\": 1,\n",
    "        \"fill-extrusion-height\": [\"*\", [\"get\", \"age\"], 5000],\n",
    "    },\n",
    "}\n",
    "first_symbol_layer_id = m.find_first_symbol_layer()[\"id\"]\n",
    "m.add_layer(layer, first_symbol_layer_id)\n",
    "m.add_layer_control()\n",
    "m"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "m = leafmap.Map(center=[-100, 40], zoom=3, pitch=60, style=\"basic\")\n",
    "source = {\n",
    "    \"type\": \"geojson\",\n",
    "    \"data\": \"https://open.gishub.org/data/us/us_counties.geojson\",\n",
    "}\n",
    "m.add_source(\"counties\", source)\n",
    "layer = {\n",
    "    \"id\": \"us-counties\",\n",
    "    \"source\": \"counties\",\n",
    "    \"type\": \"fill-extrusion\",\n",
    "    \"paint\": {\n",
    "        \"fill-extrusion-color\": [\n",
    "            \"interpolate\",\n",
    "            [\"linear\"],\n",
    "            [\"get\", \"CENSUSAREA\"],\n",
    "            400,\n",
    "            \"#fff5eb\",\n",
    "            600,\n",
    "            \"#fee6ce\",\n",
    "            800,\n",
    "            \"#fdd0a2\",\n",
    "            1000,\n",
    "            \"#fdae6b\",\n",
    "        ],\n",
    "        \"fill-extrusion-opacity\": 1,\n",
    "        \"fill-extrusion-height\": [\"*\", [\"get\", \"CENSUSAREA\"], 50],\n",
    "    },\n",
    "}\n",
    "first_symbol_layer_id = m.find_first_symbol_layer()[\"id\"]\n",
    "m.add_layer(layer, first_symbol_layer_id)\n",
    "m.add_layer_control()\n",
    "m"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "![](https://i.imgur.com/fLgqYTa.png)"
   ]
  }
 ],
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