{
    "cells": [
        {
            "cell_type": "markdown",
            "metadata": {},
            "source": [
                "<a href=\"https://githubtocolab.com/gee-community/geemap/blob/master/examples/notebooks/12_zonal_statistics.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 ee\n",
                "import geemap\n",
                "import os"
            ]
        },
        {
            "cell_type": "code",
            "execution_count": null,
            "metadata": {},
            "outputs": [],
            "source": [
                "geemap.show_youtube('ou-Xm3CLitM')"
            ]
        },
        {
            "cell_type": "code",
            "execution_count": null,
            "metadata": {},
            "outputs": [],
            "source": [
                "Map = geemap.Map()\n",
                "Map"
            ]
        },
        {
            "cell_type": "code",
            "execution_count": null,
            "metadata": {},
            "outputs": [],
            "source": [
                "# Add Earth Engine dataset\n",
                "dem = ee.Image('USGS/SRTMGL1_003')\n",
                "\n",
                "# Set visualization parameters.\n",
                "dem_vis = {\n",
                "    'min': 0,\n",
                "    'max': 4000,\n",
                "    'palette': ['006633', 'E5FFCC', '662A00', 'D8D8D8', 'F5F5F5'],\n",
                "}\n",
                "\n",
                "# Add Earth Engine DEM to map\n",
                "Map.addLayer(dem, dem_vis, 'SRTM DEM')\n",
                "\n",
                "# Add Landsat data to map\n",
                "landsat = ee.Image('LANDSAT/LE7_TOA_5YEAR/1999_2003')\n",
                "\n",
                "landsat_vis = {'bands': ['B4', 'B3', 'B2'], 'gamma': 1.4}\n",
                "Map.addLayer(landsat, landsat_vis, \"LE7_TOA_5YEAR/1999_2003\")\n",
                "\n",
                "states = ee.FeatureCollection(\"TIGER/2018/States\")\n",
                "Map.addLayer(states, {}, 'US States')"
            ]
        },
        {
            "cell_type": "code",
            "execution_count": null,
            "metadata": {},
            "outputs": [],
            "source": [
                "out_dir = os.path.join(os.path.expanduser('~'), 'Downloads')\n",
                "out_dem_stats = os.path.join(out_dir, 'dem_stats.csv')\n",
                "\n",
                "if not os.path.exists(out_dir):\n",
                "    os.makedirs(out_dir)\n",
                "\n",
                "# Allowed output formats: csv, shp, json, kml, kmz\n",
                "# Allowed statistics type: MEAN, MAXIMUM, MINIMUM, MEDIAN, STD, MIN_MAX, VARIANCE, SUM\n",
                "geemap.zonal_statistics(dem, states, out_dem_stats, statistics_type='MEAN', scale=1000)"
            ]
        },
        {
            "cell_type": "code",
            "execution_count": null,
            "metadata": {},
            "outputs": [],
            "source": [
                "out_landsat_stats = os.path.join(out_dir, 'landsat_stats.csv')\n",
                "geemap.zonal_statistics(\n",
                "    landsat, states, out_landsat_stats, statistics_type='SUM', scale=1000\n",
                ")"
            ]
        },
        {
            "cell_type": "code",
            "execution_count": null,
            "metadata": {},
            "outputs": [],
            "source": [
                "geemap.create_download_link(out_dem_stats)"
            ]
        },
        {
            "cell_type": "code",
            "execution_count": null,
            "metadata": {},
            "outputs": [],
            "source": [
                "geemap.create_download_link(out_landsat_stats)"
            ]
        }
    ],
    "metadata": {
        "kernelspec": {
            "display_name": "Python 3",
            "language": "python",
            "name": "python3"
        }
    },
    "nbformat": 4,
    "nbformat_minor": 5
}