VIIRS-DNB Annual Composites.ipynb

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  {
   "cell_type": "markdown",
   "id": "914bf93d",
   "metadata": {},
   "source": [
    "**Making simple VIIRS-DNB annual composites**"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "8af5bf26",
   "metadata": {},
   "source": [
    "In this notebook, we will be conducting a trend analysis on a time series. We shall use VIIRS-Day/Night Bands (DNB) image collection. "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "id": "280de30e",
   "metadata": {},
   "outputs": [],
   "source": [
    "import geemap, ee\n",
    "import geemap.foliumap as geemap\n",
    "try:\n",
    "    ee.Initialize()\n",
    "except Exception as e:\n",
    "    ee.Authenticate()\n",
    "    ee.Initialize()\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "id": "0da71806",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "there are 12 images in this collection\n"
     ]
    }
   ],
   "source": [
    "viirs2021 = ee.ImageCollection(\"NOAA/VIIRS/DNB/MONTHLY_V1/VCMSLCFG\").filterDate(\"2021-01-01\", \"2021-12-31\").select('avg_rad')\n",
    "\n",
    "#there should be 12 images in the collection\n",
    "print(f\"there are {viirs2021.size().getInfo()} images in this collection\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "id": "59559ee3",
   "metadata": {},
   "outputs": [
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     "execution_count": 14,
     "metadata": {},
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   "source": [
    "#reducing the imagecollection of 12 images to a single image by calculating the median. \n",
    "viirs2021med = viirs2021.median()\n",
    "\n",
    "lat = 14.6091\n",
    "lon = 121.0223\n",
    "\n",
    "map1 = geemap.Map(center= [lat,lon], zoom = 9)\n",
    "map1.add_basemap(\"SATELLITE\")\n",
    "map1.addLayer(viirs2021med.mask(viirs2021med), {}, \"VIIRS-DNB 2019 (monthly median)\")\n",
    "map1.addLayerControl()\n",
    "map1"
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  },
  {
   "cell_type": "markdown",
   "id": "07e910fd",
   "metadata": {},
   "source": [
    "**Creating a time series of annual composites from 2019 to 2021**"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "id": "39b68bf5",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "our list has 3 years in it\n"
     ]
    }
   ],
   "source": [
    "#using list and map functions to iterate through the ImageCollection and create annual composites for each year. \n",
    "\n",
    "start = 2019\n",
    "end = 2021\n",
    "\n",
    "years = ee.List.sequence(start,end)\n",
    "\n",
    "print(f\"our list has {years.size().getInfo()} years in it\")\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "id": "8908fb81",
   "metadata": {},
   "outputs": [],
   "source": [
    "#creating a function to filter images to a given year and reduce them\n",
    "colID = \"NOAA/VIIRS/DNB/MONTHLY_V1/VCMSLCFG\"\n",
    "\n",
    "def viirs_annual_median_reduce(year):\n",
    "    return ee.ImageCollection(colID).filter(ee.Filter.calendarRange(year, year, \"year\")).select(\"avg_rad\").median().set('year', year)\n",
    "\n",
    "yearComps = ee.ImageCollection.fromImages(years.map(viirs_annual_median_reduce))\n",
    "\n",
    "Map2 = geemap.Map(center = [lat,lon], zoom = 9)\n",
    "Map2.add_basemap(\"SATELLITE\")\n",
    "for year in range(start,end+1):\n",
    "    img = yearComps.filterMetadata(\"year\", \"equals\", year).first()\n",
    "    Map2.addLayer(img.mask(img), {}, f\"VIIRS-DNB {year}\", opacity = 0.75)"
   ]
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   "cell_type": "code",
   "execution_count": 17,
   "id": "305515f5",
   "metadata": {},
   "outputs": [
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       "            var tile_layer_fb76304bd8fd755b7479b97abb5694de = L.tileLayer(\n",
       "                &quot;https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png&quot;,\n",
       "                {&quot;attribution&quot;: &quot;Data by \\u0026copy; \\u003ca href=\\&quot;http://openstreetmap.org\\&quot;\\u003eOpenStreetMap\\u003c/a\\u003e, under \\u003ca href=\\&quot;http://www.openstreetmap.org/copyright\\&quot;\\u003eODbL\\u003c/a\\u003e.&quot;, &quot;detectRetina&quot;: false, &quot;maxNativeZoom&quot;: 24, &quot;maxZoom&quot;: 24, &quot;minZoom&quot;: 0, &quot;noWrap&quot;: false, &quot;opacity&quot;: 1, &quot;subdomains&quot;: &quot;abc&quot;, &quot;tms&quot;: false}\n",
       "            ).addTo(map_dc4e0fc1f700aa7b2b36bdce86f0ccb3);\n",
       "        \n",
       "    \n",
       "            var tile_layer_21bc12ae9f212e51abc8c8bbebe784d3 = L.tileLayer(\n",
       "                &quot;https://mt1.google.com/vt/lyrs=m\\u0026x={x}\\u0026y={y}\\u0026z={z}&quot;,\n",
       "                {&quot;attribution&quot;: &quot;Google&quot;, &quot;detectRetina&quot;: false, &quot;maxNativeZoom&quot;: 22, &quot;maxZoom&quot;: 22, &quot;minZoom&quot;: 0, &quot;noWrap&quot;: false, &quot;opacity&quot;: 1, &quot;subdomains&quot;: &quot;abc&quot;, &quot;tms&quot;: false}\n",
       "            ).addTo(map_dc4e0fc1f700aa7b2b36bdce86f0ccb3);\n",
       "        \n",
       "    \n",
       "            L.control.fullscreen(\n",
       "                {&quot;forceSeparateButton&quot;: false, &quot;position&quot;: &quot;topleft&quot;, &quot;title&quot;: &quot;Full Screen&quot;, &quot;titleCancel&quot;: &quot;Exit Full Screen&quot;}\n",
       "            ).addTo(map_dc4e0fc1f700aa7b2b36bdce86f0ccb3);\n",
       "        \n",
       "    \n",
       "            var options = {\n",
       "              position: &quot;topleft&quot;,\n",
       "              draw: {},\n",
       "              edit: {},\n",
       "            }\n",
       "            // FeatureGroup is to store editable layers.\n",
       "            var drawnItems = new L.featureGroup().addTo(\n",
       "                map_dc4e0fc1f700aa7b2b36bdce86f0ccb3\n",
       "            );\n",
       "            options.edit.featureGroup = drawnItems;\n",
       "            var draw_control_f880093282a8c8927bd7fe64f2202115 = new L.Control.Draw(\n",
       "                options\n",
       "            ).addTo( map_dc4e0fc1f700aa7b2b36bdce86f0ccb3 );\n",
       "            map_dc4e0fc1f700aa7b2b36bdce86f0ccb3.on(L.Draw.Event.CREATED, function(e) {\n",
       "                var layer = e.layer,\n",
       "                    type = e.layerType;\n",
       "                var coords = JSON.stringify(layer.toGeoJSON());\n",
       "                layer.on(&#x27;click&#x27;, function() {\n",
       "                    alert(coords);\n",
       "                    console.log(coords);\n",
       "                });\n",
       "                drawnItems.addLayer(layer);\n",
       "             });\n",
       "            map_dc4e0fc1f700aa7b2b36bdce86f0ccb3.on(&#x27;draw:created&#x27;, function(e) {\n",
       "                drawnItems.addLayer(e.layer);\n",
       "            });\n",
       "            \n",
       "        \n",
       "    \n",
       "            L.Control.geocoder(\n",
       "                {&quot;collapsed&quot;: true, &quot;defaultMarkGeocode&quot;: true, &quot;position&quot;: &quot;topleft&quot;}\n",
       "            ).on(&#x27;markgeocode&#x27;, function(e) {\n",
       "                map_dc4e0fc1f700aa7b2b36bdce86f0ccb3.setView(e.geocode.center, 11);\n",
       "            }).addTo(map_dc4e0fc1f700aa7b2b36bdce86f0ccb3);\n",
       "\n",
       "        \n",
       "    \n",
       "            map_dc4e0fc1f700aa7b2b36bdce86f0ccb3.fitBounds(\n",
       "                [[14.6091, 121.0223], [14.6091, 121.0223]],\n",
       "                {&quot;maxZoom&quot;: 9}\n",
       "            );\n",
       "        \n",
       "    \n",
       "            var tile_layer_7faf84f0271ce015110590cec11d62c6 = L.tileLayer(\n",
       "                &quot;https://mt1.google.com/vt/lyrs=s\\u0026x={x}\\u0026y={y}\\u0026z={z}&quot;,\n",
       "                {&quot;attribution&quot;: &quot;Google&quot;, &quot;detectRetina&quot;: false, &quot;maxNativeZoom&quot;: 22, &quot;maxZoom&quot;: 22, &quot;minZoom&quot;: 0, &quot;noWrap&quot;: false, &quot;opacity&quot;: 1, &quot;subdomains&quot;: &quot;abc&quot;, &quot;tms&quot;: false}\n",
       "            ).addTo(map_dc4e0fc1f700aa7b2b36bdce86f0ccb3);\n",
       "        \n",
       "    \n",
       "            var tile_layer_c2fd06848199cdf12e9add21b920e7b5 = L.tileLayer(\n",
       "                &quot;https://earthengine.googleapis.com/v1alpha/projects/earthengine-legacy/maps/07244fb3f7acde8e468f511716eaa6d1-e58337952fb8953ec27c3b21518c93a5/tiles/{z}/{x}/{y}&quot;,\n",
       "                {&quot;attribution&quot;: &quot;Google Earth Engine&quot;, &quot;detectRetina&quot;: false, &quot;maxNativeZoom&quot;: 24, &quot;maxZoom&quot;: 24, &quot;minZoom&quot;: 0, &quot;noWrap&quot;: false, &quot;opacity&quot;: 0.75, &quot;subdomains&quot;: &quot;abc&quot;, &quot;tms&quot;: false}\n",
       "            ).addTo(map_dc4e0fc1f700aa7b2b36bdce86f0ccb3);\n",
       "        \n",
       "    \n",
       "            var tile_layer_6d227346719b404079260861e1cbba86 = L.tileLayer(\n",
       "                &quot;https://earthengine.googleapis.com/v1alpha/projects/earthengine-legacy/maps/2a1fa9cc5af0982ce498d1fc75797078-57965d7045be3cf28cfbec08f6aadc86/tiles/{z}/{x}/{y}&quot;,\n",
       "                {&quot;attribution&quot;: &quot;Google Earth Engine&quot;, &quot;detectRetina&quot;: false, &quot;maxNativeZoom&quot;: 24, &quot;maxZoom&quot;: 24, &quot;minZoom&quot;: 0, &quot;noWrap&quot;: false, &quot;opacity&quot;: 0.75, &quot;subdomains&quot;: &quot;abc&quot;, &quot;tms&quot;: false}\n",
       "            ).addTo(map_dc4e0fc1f700aa7b2b36bdce86f0ccb3);\n",
       "        \n",
       "    \n",
       "            var tile_layer_2908af31fac4c5406a007e60274450db = L.tileLayer(\n",
       "                &quot;https://earthengine.googleapis.com/v1alpha/projects/earthengine-legacy/maps/b7b84807c422033d8f1712e7aa68fd8d-2f29602de4caffe6748f9f7bbdcc9d6b/tiles/{z}/{x}/{y}&quot;,\n",
       "                {&quot;attribution&quot;: &quot;Google Earth Engine&quot;, &quot;detectRetina&quot;: false, &quot;maxNativeZoom&quot;: 24, &quot;maxZoom&quot;: 24, &quot;minZoom&quot;: 0, &quot;noWrap&quot;: false, &quot;opacity&quot;: 0.75, &quot;subdomains&quot;: &quot;abc&quot;, &quot;tms&quot;: false}\n",
       "            ).addTo(map_dc4e0fc1f700aa7b2b36bdce86f0ccb3);\n",
       "        \n",
       "    \n",
       "            var layer_control_a5119c2d509027bd8543075c82d4c1dd = {\n",
       "                base_layers : {\n",
       "                    &quot;openstreetmap&quot; : tile_layer_fb76304bd8fd755b7479b97abb5694de,\n",
       "                },\n",
       "                overlays :  {\n",
       "                    &quot;Google Maps&quot; : tile_layer_21bc12ae9f212e51abc8c8bbebe784d3,\n",
       "                    &quot;Google Satellite&quot; : tile_layer_7faf84f0271ce015110590cec11d62c6,\n",
       "                    &quot;VIIRS-DNB 2019&quot; : tile_layer_c2fd06848199cdf12e9add21b920e7b5,\n",
       "                    &quot;VIIRS-DNB 2020&quot; : tile_layer_6d227346719b404079260861e1cbba86,\n",
       "                    &quot;VIIRS-DNB 2021&quot; : tile_layer_2908af31fac4c5406a007e60274450db,\n",
       "                },\n",
       "            };\n",
       "            L.control.layers(\n",
       "                layer_control_a5119c2d509027bd8543075c82d4c1dd.base_layers,\n",
       "                layer_control_a5119c2d509027bd8543075c82d4c1dd.overlays,\n",
       "                {&quot;autoZIndex&quot;: true, &quot;collapsed&quot;: true, &quot;position&quot;: &quot;topright&quot;}\n",
       "            ).addTo(map_dc4e0fc1f700aa7b2b36bdce86f0ccb3);\n",
       "        \n",
       "&lt;/script&gt;\" style=\"position:absolute;width:100%;height:100%;left:0;top:0;border:none !important;\" allowfullscreen webkitallowfullscreen mozallowfullscreen></iframe></div></div>"
      ],
      "text/plain": [
       "<geemap.foliumap.Map at 0x7f8ea4c16040>"
      ]
     },
     "execution_count": 17,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "Map2.addLayerControl()\n",
    "Map2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "id": "b24e2640",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div style=\"width:100%;\"><div style=\"position:relative;width:100%;height:0;padding-bottom:60%;\"><span style=\"color:#565656\">Make this Notebook Trusted to load map: File -> Trust Notebook</span><iframe srcdoc=\"&lt;!DOCTYPE html&gt;\n",
       "&lt;head&gt;    \n",
       "    &lt;meta http-equiv=&quot;content-type&quot; content=&quot;text/html; charset=UTF-8&quot; /&gt;\n",
       "    \n",
       "        &lt;script&gt;\n",
       "            L_NO_TOUCH = false;\n",
       "            L_DISABLE_3D = false;\n",
       "        &lt;/script&gt;\n",
       "    \n",
       "    &lt;style&gt;html, body {width: 100%;height: 100%;margin: 0;padding: 0;}&lt;/style&gt;\n",
       "    &lt;style&gt;#map {position:absolute;top:0;bottom:0;right:0;left:0;}&lt;/style&gt;\n",
       "    &lt;script src=&quot;https://cdn.jsdelivr.net/npm/leaflet@1.6.0/dist/leaflet.js&quot;&gt;&lt;/script&gt;\n",
       "    &lt;script src=&quot;https://code.jquery.com/jquery-1.12.4.min.js&quot;&gt;&lt;/script&gt;\n",
       "    &lt;script src=&quot;https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js&quot;&gt;&lt;/script&gt;\n",
       "    &lt;script src=&quot;https://cdnjs.cloudflare.com/ajax/libs/Leaflet.awesome-markers/2.0.2/leaflet.awesome-markers.js&quot;&gt;&lt;/script&gt;\n",
       "    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://cdn.jsdelivr.net/npm/leaflet@1.6.0/dist/leaflet.css&quot;/&gt;\n",
       "    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css&quot;/&gt;\n",
       "    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap-theme.min.css&quot;/&gt;\n",
       "    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css&quot;/&gt;\n",
       "    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://cdnjs.cloudflare.com/ajax/libs/Leaflet.awesome-markers/2.0.2/leaflet.awesome-markers.css&quot;/&gt;\n",
       "    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://cdn.jsdelivr.net/gh/python-visualization/folium/folium/templates/leaflet.awesome.rotate.min.css&quot;/&gt;\n",
       "    \n",
       "            &lt;meta name=&quot;viewport&quot; content=&quot;width=device-width,\n",
       "                initial-scale=1.0, maximum-scale=1.0, user-scalable=no&quot; /&gt;\n",
       "            &lt;style&gt;\n",
       "                #map_4febcaf115f1e279d8ede8ea27b6ed4c {\n",
       "                    position: relative;\n",
       "                    width: 100.0%;\n",
       "                    height: 100.0%;\n",
       "                    left: 0.0%;\n",
       "                    top: 0.0%;\n",
       "                }\n",
       "            &lt;/style&gt;\n",
       "        \n",
       "    &lt;script src=&quot;https://cdnjs.cloudflare.com/ajax/libs/leaflet.fullscreen/1.4.2/Control.FullScreen.min.js&quot;&gt;&lt;/script&gt;\n",
       "    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://cdnjs.cloudflare.com/ajax/libs/leaflet.fullscreen/1.4.2/Control.FullScreen.min.css&quot;/&gt;\n",
       "    &lt;script src=&quot;https://cdnjs.cloudflare.com/ajax/libs/leaflet.draw/1.0.2/leaflet.draw.js&quot;&gt;&lt;/script&gt;\n",
       "    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://cdnjs.cloudflare.com/ajax/libs/leaflet.draw/1.0.2/leaflet.draw.css&quot;/&gt;\n",
       "    &lt;script src=&quot;https://unpkg.com/leaflet-control-geocoder/dist/Control.Geocoder.js&quot;&gt;&lt;/script&gt;\n",
       "    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://unpkg.com/leaflet-control-geocoder/dist/Control.Geocoder.css&quot;/&gt;\n",
       "    &lt;script src=&quot;https://raw.githack.com/digidem/leaflet-side-by-side/gh-pages/leaflet-side-by-side.js&quot;&gt;&lt;/script&gt;\n",
       "&lt;/head&gt;\n",
       "&lt;body&gt;    \n",
       "    \n",
       "            &lt;div class=&quot;folium-map&quot; id=&quot;map_4febcaf115f1e279d8ede8ea27b6ed4c&quot; &gt;&lt;/div&gt;\n",
       "        \n",
       "&lt;/body&gt;\n",
       "&lt;script&gt;    \n",
       "    \n",
       "            var map_4febcaf115f1e279d8ede8ea27b6ed4c = L.map(\n",
       "                &quot;map_4febcaf115f1e279d8ede8ea27b6ed4c&quot;,\n",
       "                {\n",
       "                    center: [14.6091, 121.0223],\n",
       "                    crs: L.CRS.EPSG3857,\n",
       "                    zoom: 9,\n",
       "                    zoomControl: true,\n",
       "                    preferCanvas: false,\n",
       "                    eeInitialize: true,\n",
       "                    addGoogleMap: true,\n",
       "                    pluginLatlngpopup: false,\n",
       "                    pluginFullscreen: true,\n",
       "                    pluginDraw: true,\n",
       "                    DrawExport: false,\n",
       "                    pluginMinimap: false,\n",
       "                    pluginLayercontrol: false,\n",
       "                    locateControl: false,\n",
       "                    searchControl: true,\n",
       "                }\n",
       "            );\n",
       "\n",
       "            \n",
       "\n",
       "        \n",
       "    \n",
       "            var tile_layer_9848c4c6352431f5e8dc01391cfff3cb = L.tileLayer(\n",
       "                &quot;https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png&quot;,\n",
       "                {&quot;attribution&quot;: &quot;Data by \\u0026copy; \\u003ca href=\\&quot;http://openstreetmap.org\\&quot;\\u003eOpenStreetMap\\u003c/a\\u003e, under \\u003ca href=\\&quot;http://www.openstreetmap.org/copyright\\&quot;\\u003eODbL\\u003c/a\\u003e.&quot;, &quot;detectRetina&quot;: false, &quot;maxNativeZoom&quot;: 24, &quot;maxZoom&quot;: 24, &quot;minZoom&quot;: 0, &quot;noWrap&quot;: false, &quot;opacity&quot;: 1, &quot;subdomains&quot;: &quot;abc&quot;, &quot;tms&quot;: false}\n",
       "            ).addTo(map_4febcaf115f1e279d8ede8ea27b6ed4c);\n",
       "        \n",
       "    \n",
       "            var tile_layer_21bc12ae9f212e51abc8c8bbebe784d3 = L.tileLayer(\n",
       "                &quot;https://mt1.google.com/vt/lyrs=m\\u0026x={x}\\u0026y={y}\\u0026z={z}&quot;,\n",
       "                {&quot;attribution&quot;: &quot;Google&quot;, &quot;detectRetina&quot;: false, &quot;maxNativeZoom&quot;: 22, &quot;maxZoom&quot;: 22, &quot;minZoom&quot;: 0, &quot;noWrap&quot;: false, &quot;opacity&quot;: 1, &quot;subdomains&quot;: &quot;abc&quot;, &quot;tms&quot;: false}\n",
       "            ).addTo(map_4febcaf115f1e279d8ede8ea27b6ed4c);\n",
       "        \n",
       "    \n",
       "            L.control.fullscreen(\n",
       "                {&quot;forceSeparateButton&quot;: false, &quot;position&quot;: &quot;topleft&quot;, &quot;title&quot;: &quot;Full Screen&quot;, &quot;titleCancel&quot;: &quot;Exit Full Screen&quot;}\n",
       "            ).addTo(map_4febcaf115f1e279d8ede8ea27b6ed4c);\n",
       "        \n",
       "    \n",
       "            var options = {\n",
       "              position: &quot;topleft&quot;,\n",
       "              draw: {},\n",
       "              edit: {},\n",
       "            }\n",
       "            // FeatureGroup is to store editable layers.\n",
       "            var drawnItems = new L.featureGroup().addTo(\n",
       "                map_4febcaf115f1e279d8ede8ea27b6ed4c\n",
       "            );\n",
       "            options.edit.featureGroup = drawnItems;\n",
       "            var draw_control_c0a3c7d340d973bad0c76d0a04cd439f = new L.Control.Draw(\n",
       "                options\n",
       "            ).addTo( map_4febcaf115f1e279d8ede8ea27b6ed4c );\n",
       "            map_4febcaf115f1e279d8ede8ea27b6ed4c.on(L.Draw.Event.CREATED, function(e) {\n",
       "                var layer = e.layer,\n",
       "                    type = e.layerType;\n",
       "                var coords = JSON.stringify(layer.toGeoJSON());\n",
       "                layer.on(&#x27;click&#x27;, function() {\n",
       "                    alert(coords);\n",
       "                    console.log(coords);\n",
       "                });\n",
       "                drawnItems.addLayer(layer);\n",
       "             });\n",
       "            map_4febcaf115f1e279d8ede8ea27b6ed4c.on(&#x27;draw:created&#x27;, function(e) {\n",
       "                drawnItems.addLayer(e.layer);\n",
       "            });\n",
       "            \n",
       "        \n",
       "    \n",
       "            L.Control.geocoder(\n",
       "                {&quot;collapsed&quot;: true, &quot;defaultMarkGeocode&quot;: true, &quot;position&quot;: &quot;topleft&quot;}\n",
       "            ).on(&#x27;markgeocode&#x27;, function(e) {\n",
       "                map_4febcaf115f1e279d8ede8ea27b6ed4c.setView(e.geocode.center, 11);\n",
       "            }).addTo(map_4febcaf115f1e279d8ede8ea27b6ed4c);\n",
       "\n",
       "        \n",
       "    \n",
       "            map_4febcaf115f1e279d8ede8ea27b6ed4c.fitBounds(\n",
       "                [[14.6091, 121.0223], [14.6091, 121.0223]],\n",
       "                {&quot;maxZoom&quot;: 9}\n",
       "            );\n",
       "        \n",
       "    \n",
       "            var tile_layer_7faf84f0271ce015110590cec11d62c6 = L.tileLayer(\n",
       "                &quot;https://mt1.google.com/vt/lyrs=s\\u0026x={x}\\u0026y={y}\\u0026z={z}&quot;,\n",
       "                {&quot;attribution&quot;: &quot;Google&quot;, &quot;detectRetina&quot;: false, &quot;maxNativeZoom&quot;: 22, &quot;maxZoom&quot;: 22, &quot;minZoom&quot;: 0, &quot;noWrap&quot;: false, &quot;opacity&quot;: 1, &quot;subdomains&quot;: &quot;abc&quot;, &quot;tms&quot;: false}\n",
       "            ).addTo(map_4febcaf115f1e279d8ede8ea27b6ed4c);\n",
       "        \n",
       "    \n",
       "            var tile_layer_2f355e94170457717fcf2de153b2accd = L.tileLayer(\n",
       "                &quot;https://earthengine.googleapis.com/v1alpha/projects/earthengine-legacy/maps/2f0a6f464dee8509008686fb714f4318-912647c742af7e82e4f68fcc3d0dffe6/tiles/{z}/{x}/{y}&quot;,\n",
       "                {&quot;attribution&quot;: &quot;Google Earth Engine&quot;, &quot;detectRetina&quot;: false, &quot;maxNativeZoom&quot;: 24, &quot;maxZoom&quot;: 24, &quot;minZoom&quot;: 0, &quot;noWrap&quot;: false, &quot;opacity&quot;: 0.75, &quot;subdomains&quot;: &quot;abc&quot;, &quot;tms&quot;: false}\n",
       "            ).addTo(map_4febcaf115f1e279d8ede8ea27b6ed4c);\n",
       "        \n",
       "    \n",
       "            var tile_layer_c1134813bc4029979c6b86fa766902e4 = L.tileLayer(\n",
       "                &quot;https://earthengine.googleapis.com/v1alpha/projects/earthengine-legacy/maps/4f75d261396f8a3a91dc026bec71ecb9-27fa6583dddf16aae319d27f0d0a7f29/tiles/{z}/{x}/{y}&quot;,\n",
       "                {&quot;attribution&quot;: &quot;Google Earth Engine&quot;, &quot;detectRetina&quot;: false, &quot;maxNativeZoom&quot;: 24, &quot;maxZoom&quot;: 24, &quot;minZoom&quot;: 0, &quot;noWrap&quot;: false, &quot;opacity&quot;: 0.75, &quot;subdomains&quot;: &quot;abc&quot;, &quot;tms&quot;: false}\n",
       "            ).addTo(map_4febcaf115f1e279d8ede8ea27b6ed4c);\n",
       "        \n",
       "    \n",
       "            var split_control_6a7b60f540b72dc7656c7b32a81b973a = L.control.sideBySide(\n",
       "                tile_layer_2f355e94170457717fcf2de153b2accd, tile_layer_c1134813bc4029979c6b86fa766902e4\n",
       "            ).addTo(map_4febcaf115f1e279d8ede8ea27b6ed4c);\n",
       "        \n",
       "    \n",
       "            var layer_control_c1d2e5953f5e28a9cb1d69d23f5e19b0 = {\n",
       "                base_layers : {\n",
       "                    &quot;openstreetmap&quot; : tile_layer_9848c4c6352431f5e8dc01391cfff3cb,\n",
       "                },\n",
       "                overlays :  {\n",
       "                    &quot;Google Maps&quot; : tile_layer_21bc12ae9f212e51abc8c8bbebe784d3,\n",
       "                    &quot;Google Satellite&quot; : tile_layer_7faf84f0271ce015110590cec11d62c6,\n",
       "                    &quot;VIIRS-DNB 2020&quot; : tile_layer_2f355e94170457717fcf2de153b2accd,\n",
       "                    &quot;VIIRS-DNB 2021&quot; : tile_layer_c1134813bc4029979c6b86fa766902e4,\n",
       "                    &quot;Split Control&quot; : split_control_6a7b60f540b72dc7656c7b32a81b973a,\n",
       "                },\n",
       "            };\n",
       "            L.control.layers(\n",
       "                layer_control_c1d2e5953f5e28a9cb1d69d23f5e19b0.base_layers,\n",
       "                layer_control_c1d2e5953f5e28a9cb1d69d23f5e19b0.overlays,\n",
       "                {&quot;autoZIndex&quot;: true, &quot;collapsed&quot;: true, &quot;position&quot;: &quot;topright&quot;}\n",
       "            ).addTo(map_4febcaf115f1e279d8ede8ea27b6ed4c);\n",
       "        \n",
       "&lt;/script&gt;\" style=\"position:absolute;width:100%;height:100%;left:0;top:0;border:none !important;\" allowfullscreen webkitallowfullscreen mozallowfullscreen></iframe></div></div>"
      ],
      "text/plain": [
       "<geemap.foliumap.Map at 0x7f8ea4fcbc40>"
      ]
     },
     "execution_count": 20,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "#creating a split panel\n",
    "left = geemap.ee_tile_layer(yearComps.filterMetadata(\"year\", \"equals\", 2020), {}, 'VIIRS-DNB 2020', opacity = 0.75)\n",
    "right = geemap.ee_tile_layer(yearComps.filterMetadata(\"year\", \"equals\", 2021), {}, 'VIIRS-DNB 2021', opacity = 0.75)\n",
    "\n",
    "map3= geemap.Map(center = [lat, lon], zoom = 9)\n",
    "map3.add_basemap(\"SATELLITE\")\n",
    "map3.split_map(left_layer =left, right_layer =  right)\n",
    "map3.addLayerControl()\n",
    "map3"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "id": "2744bd98",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div style=\"width:100%;\"><div style=\"position:relative;width:100%;height:0;padding-bottom:60%;\"><span style=\"color:#565656\">Make this Notebook Trusted to load map: File -> Trust Notebook</span><iframe srcdoc=\"&lt;!DOCTYPE html&gt;\n",
       "&lt;head&gt;    \n",
       "    &lt;meta http-equiv=&quot;content-type&quot; content=&quot;text/html; charset=UTF-8&quot; /&gt;\n",
       "    \n",
       "        &lt;script&gt;\n",
       "            L_NO_TOUCH = false;\n",
       "            L_DISABLE_3D = false;\n",
       "        &lt;/script&gt;\n",
       "    \n",
       "    &lt;style&gt;html, body {width: 100%;height: 100%;margin: 0;padding: 0;}&lt;/style&gt;\n",
       "    &lt;style&gt;#map {position:absolute;top:0;bottom:0;right:0;left:0;}&lt;/style&gt;\n",
       "    &lt;script src=&quot;https://cdn.jsdelivr.net/npm/leaflet@1.6.0/dist/leaflet.js&quot;&gt;&lt;/script&gt;\n",
       "    &lt;script src=&quot;https://code.jquery.com/jquery-1.12.4.min.js&quot;&gt;&lt;/script&gt;\n",
       "    &lt;script src=&quot;https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js&quot;&gt;&lt;/script&gt;\n",
       "    &lt;script src=&quot;https://cdnjs.cloudflare.com/ajax/libs/Leaflet.awesome-markers/2.0.2/leaflet.awesome-markers.js&quot;&gt;&lt;/script&gt;\n",
       "    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://cdn.jsdelivr.net/npm/leaflet@1.6.0/dist/leaflet.css&quot;/&gt;\n",
       "    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css&quot;/&gt;\n",
       "    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap-theme.min.css&quot;/&gt;\n",
       "    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css&quot;/&gt;\n",
       "    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://cdnjs.cloudflare.com/ajax/libs/Leaflet.awesome-markers/2.0.2/leaflet.awesome-markers.css&quot;/&gt;\n",
       "    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://cdn.jsdelivr.net/gh/python-visualization/folium/folium/templates/leaflet.awesome.rotate.min.css&quot;/&gt;\n",
       "    \n",
       "            &lt;meta name=&quot;viewport&quot; content=&quot;width=device-width,\n",
       "                initial-scale=1.0, maximum-scale=1.0, user-scalable=no&quot; /&gt;\n",
       "            &lt;style&gt;\n",
       "                #map_234c43fc8af1bd7748f899de09ac6822 {\n",
       "                    position: relative;\n",
       "                    width: 100.0%;\n",
       "                    height: 100.0%;\n",
       "                    left: 0.0%;\n",
       "                    top: 0.0%;\n",
       "                }\n",
       "            &lt;/style&gt;\n",
       "        \n",
       "    &lt;script src=&quot;https://cdnjs.cloudflare.com/ajax/libs/leaflet.fullscreen/1.4.2/Control.FullScreen.min.js&quot;&gt;&lt;/script&gt;\n",
       "    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://cdnjs.cloudflare.com/ajax/libs/leaflet.fullscreen/1.4.2/Control.FullScreen.min.css&quot;/&gt;\n",
       "    &lt;script src=&quot;https://cdnjs.cloudflare.com/ajax/libs/leaflet.draw/1.0.2/leaflet.draw.js&quot;&gt;&lt;/script&gt;\n",
       "    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://cdnjs.cloudflare.com/ajax/libs/leaflet.draw/1.0.2/leaflet.draw.css&quot;/&gt;\n",
       "    &lt;script src=&quot;https://unpkg.com/leaflet-control-geocoder/dist/Control.Geocoder.js&quot;&gt;&lt;/script&gt;\n",
       "    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://unpkg.com/leaflet-control-geocoder/dist/Control.Geocoder.css&quot;/&gt;\n",
       "    &lt;script src=&quot;https://raw.githack.com/digidem/leaflet-side-by-side/gh-pages/leaflet-side-by-side.js&quot;&gt;&lt;/script&gt;\n",
       "&lt;/head&gt;\n",
       "&lt;body&gt;    \n",
       "    \n",
       "            &lt;div class=&quot;folium-map&quot; id=&quot;map_234c43fc8af1bd7748f899de09ac6822&quot; &gt;&lt;/div&gt;\n",
       "        \n",
       "&lt;/body&gt;\n",
       "&lt;script&gt;    \n",
       "    \n",
       "            var map_234c43fc8af1bd7748f899de09ac6822 = L.map(\n",
       "                &quot;map_234c43fc8af1bd7748f899de09ac6822&quot;,\n",
       "                {\n",
       "                    center: [13.1391, 123.7438],\n",
       "                    crs: L.CRS.EPSG3857,\n",
       "                    zoom: 9,\n",
       "                    zoomControl: true,\n",
       "                    preferCanvas: false,\n",
       "                    eeInitialize: true,\n",
       "                    addGoogleMap: true,\n",
       "                    pluginLatlngpopup: false,\n",
       "                    pluginFullscreen: true,\n",
       "                    pluginDraw: true,\n",
       "                    DrawExport: false,\n",
       "                    pluginMinimap: false,\n",
       "                    pluginLayercontrol: false,\n",
       "                    locateControl: false,\n",
       "                    searchControl: true,\n",
       "                }\n",
       "            );\n",
       "\n",
       "            \n",
       "\n",
       "        \n",
       "    \n",
       "            var tile_layer_fd879e82038f97196af6b6ff073cb038 = L.tileLayer(\n",
       "                &quot;https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png&quot;,\n",
       "                {&quot;attribution&quot;: &quot;Data by \\u0026copy; \\u003ca href=\\&quot;http://openstreetmap.org\\&quot;\\u003eOpenStreetMap\\u003c/a\\u003e, under \\u003ca href=\\&quot;http://www.openstreetmap.org/copyright\\&quot;\\u003eODbL\\u003c/a\\u003e.&quot;, &quot;detectRetina&quot;: false, &quot;maxNativeZoom&quot;: 24, &quot;maxZoom&quot;: 24, &quot;minZoom&quot;: 0, &quot;noWrap&quot;: false, &quot;opacity&quot;: 1, &quot;subdomains&quot;: &quot;abc&quot;, &quot;tms&quot;: false}\n",
       "            ).addTo(map_234c43fc8af1bd7748f899de09ac6822);\n",
       "        \n",
       "    \n",
       "            var tile_layer_21bc12ae9f212e51abc8c8bbebe784d3 = L.tileLayer(\n",
       "                &quot;https://mt1.google.com/vt/lyrs=m\\u0026x={x}\\u0026y={y}\\u0026z={z}&quot;,\n",
       "                {&quot;attribution&quot;: &quot;Google&quot;, &quot;detectRetina&quot;: false, &quot;maxNativeZoom&quot;: 22, &quot;maxZoom&quot;: 22, &quot;minZoom&quot;: 0, &quot;noWrap&quot;: false, &quot;opacity&quot;: 1, &quot;subdomains&quot;: &quot;abc&quot;, &quot;tms&quot;: false}\n",
       "            ).addTo(map_234c43fc8af1bd7748f899de09ac6822);\n",
       "        \n",
       "    \n",
       "            L.control.fullscreen(\n",
       "                {&quot;forceSeparateButton&quot;: false, &quot;position&quot;: &quot;topleft&quot;, &quot;title&quot;: &quot;Full Screen&quot;, &quot;titleCancel&quot;: &quot;Exit Full Screen&quot;}\n",
       "            ).addTo(map_234c43fc8af1bd7748f899de09ac6822);\n",
       "        \n",
       "    \n",
       "            var options = {\n",
       "              position: &quot;topleft&quot;,\n",
       "              draw: {},\n",
       "              edit: {},\n",
       "            }\n",
       "            // FeatureGroup is to store editable layers.\n",
       "            var drawnItems = new L.featureGroup().addTo(\n",
       "                map_234c43fc8af1bd7748f899de09ac6822\n",
       "            );\n",
       "            options.edit.featureGroup = drawnItems;\n",
       "            var draw_control_89b422e7fa67fcc7dfede77eb043104d = new L.Control.Draw(\n",
       "                options\n",
       "            ).addTo( map_234c43fc8af1bd7748f899de09ac6822 );\n",
       "            map_234c43fc8af1bd7748f899de09ac6822.on(L.Draw.Event.CREATED, function(e) {\n",
       "                var layer = e.layer,\n",
       "                    type = e.layerType;\n",
       "                var coords = JSON.stringify(layer.toGeoJSON());\n",
       "                layer.on(&#x27;click&#x27;, function() {\n",
       "                    alert(coords);\n",
       "                    console.log(coords);\n",
       "                });\n",
       "                drawnItems.addLayer(layer);\n",
       "             });\n",
       "            map_234c43fc8af1bd7748f899de09ac6822.on(&#x27;draw:created&#x27;, function(e) {\n",
       "                drawnItems.addLayer(e.layer);\n",
       "            });\n",
       "            \n",
       "        \n",
       "    \n",
       "            L.Control.geocoder(\n",
       "                {&quot;collapsed&quot;: true, &quot;defaultMarkGeocode&quot;: true, &quot;position&quot;: &quot;topleft&quot;}\n",
       "            ).on(&#x27;markgeocode&#x27;, function(e) {\n",
       "                map_234c43fc8af1bd7748f899de09ac6822.setView(e.geocode.center, 11);\n",
       "            }).addTo(map_234c43fc8af1bd7748f899de09ac6822);\n",
       "\n",
       "        \n",
       "    \n",
       "            map_234c43fc8af1bd7748f899de09ac6822.fitBounds(\n",
       "                [[13.1391, 123.7438], [13.1391, 123.7438]],\n",
       "                {&quot;maxZoom&quot;: 9}\n",
       "            );\n",
       "        \n",
       "    \n",
       "            var tile_layer_7faf84f0271ce015110590cec11d62c6 = L.tileLayer(\n",
       "                &quot;https://mt1.google.com/vt/lyrs=s\\u0026x={x}\\u0026y={y}\\u0026z={z}&quot;,\n",
       "                {&quot;attribution&quot;: &quot;Google&quot;, &quot;detectRetina&quot;: false, &quot;maxNativeZoom&quot;: 22, &quot;maxZoom&quot;: 22, &quot;minZoom&quot;: 0, &quot;noWrap&quot;: false, &quot;opacity&quot;: 1, &quot;subdomains&quot;: &quot;abc&quot;, &quot;tms&quot;: false}\n",
       "            ).addTo(map_234c43fc8af1bd7748f899de09ac6822);\n",
       "        \n",
       "    \n",
       "            var tile_layer_fcd5bc707b9081c5ad7cf0ab4a2a033e = L.tileLayer(\n",
       "                &quot;https://earthengine.googleapis.com/v1alpha/projects/earthengine-legacy/maps/a650040a062742fcedb572a6c33dc2cc-a759dd4873ea9200d83303b9bf27bae8/tiles/{z}/{x}/{y}&quot;,\n",
       "                {&quot;attribution&quot;: &quot;Google Earth Engine&quot;, &quot;detectRetina&quot;: false, &quot;maxNativeZoom&quot;: 24, &quot;maxZoom&quot;: 24, &quot;minZoom&quot;: 0, &quot;noWrap&quot;: false, &quot;opacity&quot;: 0.75, &quot;subdomains&quot;: &quot;abc&quot;, &quot;tms&quot;: false}\n",
       "            ).addTo(map_234c43fc8af1bd7748f899de09ac6822);\n",
       "        \n",
       "    \n",
       "            var tile_layer_1d84dd68cfa5befe183a0f8e42073a8a = L.tileLayer(\n",
       "                &quot;https://earthengine.googleapis.com/v1alpha/projects/earthengine-legacy/maps/4f75d261396f8a3a91dc026bec71ecb9-6cd3b026a23b28a8fe47816d919593de/tiles/{z}/{x}/{y}&quot;,\n",
       "                {&quot;attribution&quot;: &quot;Google Earth Engine&quot;, &quot;detectRetina&quot;: false, &quot;maxNativeZoom&quot;: 24, &quot;maxZoom&quot;: 24, &quot;minZoom&quot;: 0, &quot;noWrap&quot;: false, &quot;opacity&quot;: 0.75, &quot;subdomains&quot;: &quot;abc&quot;, &quot;tms&quot;: false}\n",
       "            ).addTo(map_234c43fc8af1bd7748f899de09ac6822);\n",
       "        \n",
       "    \n",
       "            var split_control_1b58456128d0dc4784bb78b293aee7c5 = L.control.sideBySide(\n",
       "                tile_layer_fcd5bc707b9081c5ad7cf0ab4a2a033e, tile_layer_1d84dd68cfa5befe183a0f8e42073a8a\n",
       "            ).addTo(map_234c43fc8af1bd7748f899de09ac6822);\n",
       "        \n",
       "    \n",
       "            var layer_control_9da54c857d0ed6d338d5b985551947b2 = {\n",
       "                base_layers : {\n",
       "                    &quot;openstreetmap&quot; : tile_layer_fd879e82038f97196af6b6ff073cb038,\n",
       "                },\n",
       "                overlays :  {\n",
       "                    &quot;Google Maps&quot; : tile_layer_21bc12ae9f212e51abc8c8bbebe784d3,\n",
       "                    &quot;Google Satellite&quot; : tile_layer_7faf84f0271ce015110590cec11d62c6,\n",
       "                    &quot;VIIRS-DNB 2020&quot; : tile_layer_fcd5bc707b9081c5ad7cf0ab4a2a033e,\n",
       "                    &quot;VIIRS-DNB 2021&quot; : tile_layer_1d84dd68cfa5befe183a0f8e42073a8a,\n",
       "                    &quot;Split Control&quot; : split_control_1b58456128d0dc4784bb78b293aee7c5,\n",
       "                },\n",
       "            };\n",
       "            L.control.layers(\n",
       "                layer_control_9da54c857d0ed6d338d5b985551947b2.base_layers,\n",
       "                layer_control_9da54c857d0ed6d338d5b985551947b2.overlays,\n",
       "                {&quot;autoZIndex&quot;: true, &quot;collapsed&quot;: true, &quot;position&quot;: &quot;topright&quot;}\n",
       "            ).addTo(map_234c43fc8af1bd7748f899de09ac6822);\n",
       "        \n",
       "&lt;/script&gt;\" style=\"position:absolute;width:100%;height:100%;left:0;top:0;border:none !important;\" allowfullscreen webkitallowfullscreen mozallowfullscreen></iframe></div></div>"
      ],
      "text/plain": [
       "<geemap.foliumap.Map at 0x7f8e702a7850>"
      ]
     },
     "execution_count": 22,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "#Legazpi City, Albay\n",
    "#creating a split panel\n",
    "left = geemap.ee_tile_layer(yearComps.filterMetadata(\"year\", \"equals\", 2019), {}, 'VIIRS-DNB 2020', opacity = 0.75)\n",
    "right = geemap.ee_tile_layer(yearComps.filterMetadata(\"year\", \"equals\", 2021), {}, 'VIIRS-DNB 2021', opacity = 0.75)\n",
    "\n",
    "\n",
    "map4= geemap.Map(center = [13.1391, 123.7438], zoom = 9)\n",
    "map4.add_basemap(\"SATELLITE\")\n",
    "map4.split_map(left_layer =left, right_layer =  right)\n",
    "map4.addLayerControl()\n",
    "map4"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "37d449bc",
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
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