Updated notebooks 2023-09-24 UTC

Author: actions-user

content/notebooks/82_pmtiles.ipynb

@@ -173,6 +173,111 @@
     "m.add_legend(legend_dict=legend_dict)\n",
     "m"
    ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Download [building footprints](https://github.com/opengeos/open-data/blob/main/datasets/libya/Derna_buildings.geojson) of Derna, Libya."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "url = 'https://raw.githubusercontent.com/opengeos/open-data/main/datasets/libya/Derna_buildings.geojson'\n",
+    "leafmap.download_file(url, 'buildings.geojson')"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Convert vector to PMTiles."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "pmtiles = 'buildings.pmtiles'\n",
+    "leafmap.vector_to_pmtiles(\n",
+    "    'buildings.geojson', \n",
+    "    pmtiles, \n",
+    "    layer_name='buildings', \n",
+    "    overwrite=True, \n",
+    "    quiet=True\n",
+    ")"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Start a HTTP Sever"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "leafmap.start_server(port=8000)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "url = f'http://127.0.0.1:8000/{pmtiles}'\n",
+    "# leafmap.pmtiles_metadata(url)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Diplay the PMTiles on the map."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "m = leafmap.Map()\n",
+    "\n",
+    "style = {\n",
+    "    \"version\": 8,\n",
+    "    \"sources\": {\n",
+    "        \"example_source\": {\n",
+    "            \"type\": \"vector\",\n",
+    "            \"url\": \"pmtiles://\" + url,\n",
+    "            \"attribution\": 'PMTiles',\n",
+    "        }\n",
+    "    },\n",
+    "    \"layers\": [\n",
+    "        {\n",
+    "            \"id\": \"buildings\",\n",
+    "            \"source\": \"example_source\",\n",
+    "            \"source-layer\": \"buildings\",\n",
+    "            \"type\": \"fill\",\n",
+    "            \"paint\": {\"fill-color\": \"#3388ff\", \"fill-opacity\": 0.5},\n",
+    "        },\n",
+    "    ],\n",
+    "}\n",
+    "\n",
+    "m.add_pmtiles(url, name='Buildings', show=True, zoom_to_layer=True, style=style)\n",
+    "m"
+   ]
   }
  ],
  "metadata": {