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   "source": [
    "![Saudia XYZ logo](http://alasmari.net/saudia-logo.png)\n",
    "***Code:*** create landsat timelapse <br>\n",
    "***Main Source:*** geemap <br>\n",
    "***Edited by:*** Saudia.xyz\n",
    "\n",
    "Uncomment the following line to install geemap if needed."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "# !pip install geemap"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "import geemap"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Create Landsat timeseries"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 113,
   "metadata": {},
   "outputs": [],
   "source": [
    "import os\n",
    "import ee\n",
    "import geemap"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 114,
   "metadata": {},
   "outputs": [
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      "text/plain": [
       "Map(center=[24.7169, 46.6755], controls=(WidgetControl(options=['position', 'transparent_bg'], widget=HBox(chi…"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "Map = geemap.Map(center=(24.7169, 46.6755), zoom=10)\n",
    "Map"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Define an roi or draw a rectangle on the map"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 116,
   "metadata": {},
   "outputs": [],
   "source": [
    "roi = ee.Geometry.Polygon(\n",
    "    [[[46.4502, 24.4809],\n",
    "      [46.9680, 24.4734],\n",
    "        [46.9584, 25.0221],\n",
    "        [46.4694, 24.9873]]], None, False)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 117,
   "metadata": {},
   "outputs": [],
   "source": [
    "#roi = Map.draw_last_feature"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 118,
   "metadata": {},
   "outputs": [],
   "source": [
    "collection = geemap.landsat_timeseries(roi=roi, start_year=1985, end_year=2021, start_date='06-10', end_date='09-20')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 119,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "37\n"
     ]
    }
   ],
   "source": [
    "print(collection.size().getInfo())"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 120,
   "metadata": {},
   "outputs": [],
   "source": [
    "first_image = collection.first()\n",
    "\n",
    "vis = {\n",
    "    'bands': ['NIR', 'Red', 'Green'],\n",
    "    'min': 0,\n",
    "    'max': 4000,\n",
    "    'gamma': [1, 1, 1]\n",
    "}\n",
    "\n",
    "Map.addLayer(first_image, vis, 'First image')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Download ImageCollection as a GIF"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 121,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Define arguments for animation function parameters.\n",
    "video_args = {\n",
    "  'dimensions': 768,\n",
    "  'region': roi,\n",
    "  'framesPerSecond': 10,\n",
    "  'bands': ['NIR', 'Red', 'Green'],\n",
    "  'min': 0,\n",
    "  'max': 4000,\n",
    "  'gamma': [1, 1, 1]\n",
    "}"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 122,
   "metadata": {},
   "outputs": [],
   "source": [
    "work_dir = os.path.join(os.path.expanduser(\"~\"), 'Downloads')\n",
    "if not os.path.exists(work_dir):\n",
    "    os.makedirs(work_dir)\n",
    "out_gif = os.path.join(work_dir, \"landsat_ts.gif\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 123,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Generating URL...\n",
      "Downloading GIF image from https://earthengine.googleapis.com/v1alpha/projects/earthengine-legacy/videoThumbnails/dd60057a4dd5cdbb72959825183e603f-e7de6052cd68016428d5b9bbd439d5ea:getPixels\n",
      "Please wait ...\n",
      "The GIF image has been saved to: C:\\Users\\alasm\\Downloads\\landsat_ts.gif\n"
     ]
    }
   ],
   "source": [
    "geemap.download_ee_video(collection, video_args, out_gif)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Add animated text to GIF"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 124,
   "metadata": {},
   "outputs": [
    {
     "data": {
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       "model_id": "55947c3a909e4e1a9104fddbfe438659",
       "version_major": 2,
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      },
      "text/plain": [
       "Output()"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "geemap.show_image(out_gif)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 128,
   "metadata": {},
   "outputs": [],
   "source": [
    "texted_gif = os.path.join(work_dir, \"landsat_ts_text.gif\")\n",
    "geemap.add_text_to_gif(out_gif, texted_gif, xy=('3%', '5%'), text_sequence=1985, font_size=30, font_color='#000000', add_progress_bar=False)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 129,
   "metadata": {},
   "outputs": [],
   "source": [
    "label = 'Urban Growth in Riyadh'\n",
    "geemap.add_text_to_gif(texted_gif, texted_gif, xy=('2%', '88%'), text_sequence=label, font_size=30, font_color='#000000', progress_bar_color='cyan')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 130,
   "metadata": {},
   "outputs": [
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      "text/plain": [
       "Output()"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "geemap.show_image(texted_gif)"
   ]
  }
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