{
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  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import ee\n",
    "import geemap\n",
    "from bqplot import pyplot as plt"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "Map = geemap.Map()\n",
    "Map.add_basemap(\"TERRAIN\")\n",
    "Map"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "image = ee.Image('USGS/SRTMGL1_003')\n",
    "vis_params = {\n",
    "  'min': 0,\n",
    "  'max': 4000,\n",
    "  'palette': ['006633', 'E5FFCC', '662A00', 'D8D8D8', 'F5F5F5']}\n",
    "Map.addLayer(image, vis_params, 'SRTM DEM', True, 0.5)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Use the drawing tool to draw any line on the map.\n",
    "line = Map.user_roi\n",
    "if line is None:\n",
    "    line = ee.Geometry.LineString([[-120.223279, 36.314849], [-118.926969, 36.712192], [-117.202217, 36.756215]])\n",
    "    Map.addLayer(line, {}, \"ROI\")   \n",
    "Map.centerObject(line)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "line.getInfo()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "reducer='mean'  # Any ee.Reducer, e.g., mean, median, min, max, stdDev\n",
    "transect = geemap.extract_transect(image, line, n_segments=100, reducer=reducer, to_pandas=True)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "transect"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "fig = plt.figure()\n",
    "plt.plot(transect['distance'], transect[reducer])\n",
    "plt.xlabel('Distance')\n",
    "plt.ylabel(\"Elevation\")\n",
    "plt.show()"
   ]
  }
 ],
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