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| { | ||
| "cells": [ | ||
| { | ||
| "cell_type": "markdown", | ||
| "metadata": {}, | ||
| "source": [ | ||
| "<table class=\"ee-notebook-buttons\" align=\"left\">\n", | ||
| " <td><a target=\"_blank\" href=\"https://github.com/giswqs/geemap/tree/master/examples/notebooks/ipyleaflet_draw_control.ipynb\"><img width=32px src=\"https://www.tensorflow.org/images/GitHub-Mark-32px.png\" /> View source on GitHub</a></td>\n", | ||
| " <td><a target=\"_blank\" href=\"https://nbviewer.jupyter.org/github/giswqs/geemap/blob/master/examples/notebooks/ipyleaflet_draw_control.ipynb\"><img width=26px src=\"https://upload.wikimedia.org/wikipedia/commons/thumb/3/38/Jupyter_logo.svg/883px-Jupyter_logo.svg.png\" />Notebook Viewer</a></td>\n", | ||
| " <td><a target=\"_blank\" href=\"https://mybinder.org/v2/gh/giswqs/geemap/master?filepath=examples/notebooks/ipyleaflet_draw_control.ipynb\"><img width=56px src=\"https://mybinder.org/static/images/logo_social.png\" />Run in mybinder.org</a></td>\n", | ||
| " <td><a target=\"_blank\" href=\"https://binder.pangeo.io/v2/gh/giswqs/geemap/master?filepath=examples/notebooks/ipyleaflet_draw_control.ipynb\"><img width=60px src=\"https://i.imgur.com/NiV7heh.png\" />Run in binder.pangeo.io</a></td>\n", | ||
| " <td><a target=\"_blank\" href=\"https://colab.research.google.com/github/giswqs/geemap/blob/master/examples/notebooks/ipyleaflet_draw_control.ipynb\"><img width=26px src=\"https://www.tensorflow.org/images/colab_logo_32px.png\" /> Run in Google Colab</a></td>\n", | ||
| "</table>" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "markdown", | ||
| "metadata": {}, | ||
| "source": [ | ||
| "# Using ipyleaflet drawing tools to interact with Earth Engine data\n", | ||
| "\n", | ||
| "* [Video demo](https://i.imgur.com/SzauIsZ.gifv)\n", | ||
| "\n", | ||
| "## Install Earth Engine API and geemap\n", | ||
| "Install the [Earth Engine Python API](https://developers.google.com/earth-engine/python_install) and [geemap](https://github.com/giswqs/geemap). The **geemap** Python package is built upon the [ipyleaflet](https://github.com/jupyter-widgets/ipyleaflet) and [folium](https://github.com/python-visualization/folium) packages and implements several methods for interacting with Earth Engine data layers, such as `Map.addLayer()`, `Map.setCenter()`, and `Map.centerObject()`.\n", | ||
| "The following script checks if the geemap package has been installed. If not, it will install geemap, which automatically installs its [dependencies](https://github.com/giswqs/geemap#dependencies), including earthengine-api, folium, and ipyleaflet.\n", | ||
| "\n", | ||
| "**Important note**: A key difference between folium and ipyleaflet is that ipyleaflet is built upon ipywidgets and allows bidirectional communication between the front-end and the backend enabling the use of the map to capture user input, while folium is meant for displaying static data only ([source](https://blog.jupyter.org/interactive-gis-in-jupyter-with-ipyleaflet-52f9657fa7a)). Note that [Google Colab](https://colab.research.google.com/) currently does not support ipyleaflet ([source](https://github.com/googlecolab/colabtools/issues/60#issuecomment-596225619)). Therefore, if you are using geemap with Google Colab, you should use [`import geemap.eefolium`](https://github.com/giswqs/geemap/blob/master/geemap/eefolium.py). If you are using geemap with [binder](https://mybinder.org/) or a local Jupyter notebook server, you can use [`import geemap`](https://github.com/giswqs/geemap/blob/master/geemap/geemap.py), which provides more functionalities for capturing user input (e.g., mouse-clicking and moving)." | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": null, | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "# Installs geemap package\n", | ||
| "import subprocess\n", | ||
| "\n", | ||
| "try:\n", | ||
| " import geemap\n", | ||
| "except ImportError:\n", | ||
| " print('geemap package not installed. Installing ...')\n", | ||
| " subprocess.check_call([\"python\", '-m', 'pip', 'install', '-U', 'geemap'])\n", | ||
| "\n", | ||
| "# Checks whether this notebook is running on Google Colab\n", | ||
| "try:\n", | ||
| " import google.colab\n", | ||
| " import geemap.eefolium as emap\n", | ||
| "except:\n", | ||
| " import geemap as emap\n", | ||
| "\n", | ||
| "# Authenticates and initializes Earth Engine\n", | ||
| "import ee\n", | ||
| "\n", | ||
| "try:\n", | ||
| " ee.Initialize()\n", | ||
| "except Exception as e:\n", | ||
| " ee.Authenticate()\n", | ||
| " ee.Initialize() " | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "markdown", | ||
| "metadata": {}, | ||
| "source": [ | ||
| "## Create an interactive map \n", | ||
| "The default basemap is `Google Satellite`. [Additional basemaps](https://github.com/giswqs/geemap/blob/master/geemap/geemap.py#L13) can be added using the `Map.add_basemap()` function. " | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": null, | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "Map = emap.Map(center=[40,-100], zoom=4)\n", | ||
| "Map.add_basemap('ROADMAP') # Add Google Map\n", | ||
| "Map" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": null, | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "import ipywidgets as widgets\n", | ||
| "from ipyleaflet import WidgetControl\n", | ||
| "from geemap import geojson_to_eegeometry\n", | ||
| "\n", | ||
| "# Add Earth Engine dataset\n", | ||
| "image = ee.Image('USGS/SRTMGL1_003')\n", | ||
| "\n", | ||
| "# Set visualization parameters.\n", | ||
| "vis_params = {\n", | ||
| " 'min': 0,\n", | ||
| " 'max': 4000,\n", | ||
| " 'palette': ['006633', 'E5FFCC', '662A00', 'D8D8D8', 'F5F5F5']}\n", | ||
| "\n", | ||
| "# Get basemap layers\n", | ||
| "base_layers = Map.layers\n", | ||
| "\n", | ||
| "# Add Earth Engine DEM to map\n", | ||
| "Map.addLayer(image, vis_params, 'EE DEM')\n", | ||
| "\n", | ||
| "# An empty list for storing drawing geometries\n", | ||
| "feat_list = []\n", | ||
| "\n", | ||
| "# Get the DrawControl\n", | ||
| "dc = Map.draw_control\n", | ||
| "\n", | ||
| "# Handle draw events\n", | ||
| "def handle_draw(self, action, geo_json):\n", | ||
| "\n", | ||
| " geom = geojson_to_eegeometry(geo_json, False)\n", | ||
| " feature = ee.Feature(geom)\n", | ||
| " feat_list.append(feature)\n", | ||
| " collection = ee.FeatureCollection(feat_list)\n", | ||
| " clip_image = image.clipToCollection(collection)\n", | ||
| " \n", | ||
| " Map.layers = base_layers[:3]\n", | ||
| " Map.addLayer(clip_image, vis_params, 'EE DEM')\n", | ||
| " Map.addLayer(ee.Image().paint(collection, 0, 2), {'palette': 'red'}, 'EE Geometry')\n", | ||
| "\n", | ||
| "dc.on_draw(handle_draw)\n", | ||
| "\n", | ||
| "# Add a button to the map\n", | ||
| "button = widgets.Button(description=\"Clear drawings\")\n", | ||
| "btn_control = WidgetControl(widget=button, position='bottomright')\n", | ||
| "Map.add_control(btn_control)\n", | ||
| "\n", | ||
| "# Handle click event\n", | ||
| "def on_button_clicked(b):\n", | ||
| " dc.clear()\n", | ||
| "\n", | ||
| "button.on_click(on_button_clicked)" | ||
| ] | ||
| }, | ||
| { | ||
| "cell_type": "code", | ||
| "execution_count": null, | ||
| "metadata": {}, | ||
| "outputs": [], | ||
| "source": [ | ||
| "# Print out the geojson of the last drawing object\n", | ||
| "dc.last_draw" | ||
| ] | ||
| } | ||
| ], | ||
| "metadata": { | ||
| "anaconda-cloud": {}, | ||
| "kernelspec": { | ||
| "display_name": "Python 3", | ||
| "language": "python", | ||
| "name": "python3" | ||
| }, | ||
| "language_info": { | ||
| "codemirror_mode": { | ||
| "name": "ipython", | ||
| "version": 3 | ||
| }, | ||
| "file_extension": ".py", | ||
| "mimetype": "text/x-python", | ||
| "name": "python", | ||
| "nbconvert_exporter": "python", | ||
| "pygments_lexer": "ipython3", | ||
| "version": "3.8.2" | ||
| } | ||
| }, | ||
| "nbformat": 4, | ||
| "nbformat_minor": 1 | ||
| } |
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