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  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "<a href=\"https://githubtocolab.com/giswqs/geemap/blob/master/examples/notebooks/18_create_landsat_timelapse.ipynb\" target=\"_parent\"><img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open in Colab\"/></a>\n",
    "\n",
    "Uncomment the following line to install [geemap](https://geemap.org) if needed."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# !pip install geemap"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import geemap"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "geemap.show_youtube('OwjSJnGWKJs')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Update the geemap package\n",
    "\n",
    "If you run into errors with this notebook, please uncomment the line below to update the [geemap](https://github.com/giswqs/geemap#installation) package to the latest version from GitHub. \n",
    "Restart the Kernel (Menu -> Kernel -> Restart) to take effect."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# geemap.update_package()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Create an interactive map\n",
    "\n",
    "### Use the Drawing tool to draw a rectangle on the map"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "Map = geemap.Map()\n",
    "Map"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Generate a Landsat timelapse animation"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import os\n",
    "\n",
    "out_dir = os.path.join(os.path.expanduser(\"~\"), 'Downloads')\n",
    "if not os.path.exists(out_dir):\n",
    "    os.makedirs(out_dir)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "label = 'Urban Growth in Las Vegas'\n",
    "Map.add_landsat_ts_gif(\n",
    "    label=label,\n",
    "    start_year=1985,\n",
    "    bands=['Red', 'Green', 'Blue'],\n",
    "    font_color='white',\n",
    "    frames_per_second=10,\n",
    "    progress_bar_color='blue',\n",
    ")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Create Landsat timeseries"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import os\n",
    "import ee\n",
    "import geemap"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "Map = geemap.Map()\n",
    "Map"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You and define an roi or draw a rectangle on the map"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "roi = ee.Geometry.Polygon(\n",
    "    [\n",
    "        [\n",
    "            [-115.471773, 35.892718],\n",
    "            [-115.471773, 36.409454],\n",
    "            [-114.271283, 36.409454],\n",
    "            [-114.271283, 35.892718],\n",
    "            [-115.471773, 35.892718],\n",
    "        ]\n",
    "    ],\n",
    "    None,\n",
    "    False,\n",
    ")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# roi = Map.draw_last_feature"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "collection = geemap.landsat_timeseries(\n",
    "    roi=roi, start_year=1985, end_year=2019, start_date='06-10', end_date='09-20'\n",
    ")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "print(collection.size().getInfo())"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "first_image = collection.first()\n",
    "\n",
    "vis = {'bands': ['NIR', 'Red', 'Green'], 'min': 0, 'max': 4000, 'gamma': [1, 1, 1]}\n",
    "\n",
    "Map.addLayer(first_image, vis, 'First image')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Download ImageCollection as a GIF"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "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": null,
   "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": null,
   "metadata": {},
   "outputs": [],
   "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": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "geemap.show_image(out_gif)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "texted_gif = os.path.join(work_dir, \"landsat_ts_text.gif\")\n",
    "geemap.add_text_to_gif(\n",
    "    out_gif,\n",
    "    texted_gif,\n",
    "    xy=('3%', '5%'),\n",
    "    text_sequence=1985,\n",
    "    font_size=30,\n",
    "    font_color='#ffffff',\n",
    "    add_progress_bar=False,\n",
    ")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "label = 'Urban Growth in Las Vegas'\n",
    "geemap.add_text_to_gif(\n",
    "    texted_gif,\n",
    "    texted_gif,\n",
    "    xy=('2%', '88%'),\n",
    "    text_sequence=label,\n",
    "    font_size=30,\n",
    "    font_color='#ffffff',\n",
    "    progress_bar_color='cyan',\n",
    ")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "geemap.show_image(texted_gif)"
   ]
  }
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