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Earth Engine Demo: Trendy Lights

Live Demo

This is an example Google App Engine web app that communicates with Google Earth Engine. It uses memcache to cache results and avoid exceeding request quotas.

Download Trendy Lights

Download the Earth Engine API repository from GitHub:

git clone https://github.com/google/earthengine-api.git

Navigate to the Trendy Lights example code:

cd ./earthengine-api/demos/trendy-lights/

Create your own project

Each App Engine app needs its own project. The project ID for the default instance of this app is trendy-lights. To deploy your own instance, you'll need to create a new project with a different ID.

To create an App Engine project for your app:

  1. Open the Google Developers Console.
  2. Click Create Project.
  3. Enter a project name and a project ID.
  4. Click Create.

Once you've selected a project ID, update your app.yaml file.

Set up a service account

  • Create a service account.
  • Download a P12 private key from the Google Developers Console.
  • Convert the private key of that service account to a .pem file:
    openssl pkcs12 -in downloaded-privatekey.p12 -nodes -nocerts > privatekey.pem
  • Copy the .pem file into the directory that has your app.yaml file.
  • Update config.py file with your service account email address.

Build the app

From within the trendy-lights folder, run:

. ./build.sh

This script will build the app and fetch all its dependencies. It will also install the Google Cloud SDK if necessary.

Run the app!

From within the trendy-lights folder, run:

dev_appserver.py ./

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CloudFrequency webapp, using Google App Engine

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