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EarthEngine_authentication_guide.md

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EarthEngine Authentication Guide

Aug.25, 2022 Chris Harding ([email protected])

This guide is meant for TouchTerrain users who want to:

  1. Run the standalone version of TouchTerrain in a colab or binder jupyter notebook and
  2. Use it with online elevation data (via Google Earth Engine) instead of only with local geotiff files

Rationale

  • Using the colab badge Open In Colab or the binder badge Binder will eventually show you a notebook (TouchTerrain_jupyter_starters_binder.ipynb) inside a browser.
  • When running the cell ee.Authenticate() in this notebook, you will be required to generate and paste in a token (code) that connects your notebook code with a EarthEngine dev account

Request a EarthEngine dev account (I'm actually not sure if this is required, so you could skip this part and see if the rest works!)

  • This assumes that you have a standard Google account and are signed in with it on your current browser
  • In your browser, go to go to https://signup.earthengine.google.com/ and request an account
  • Use something like Want to use TouchTerrain to create 3D printable terrain models files as reason
  • I think this will only work for private and research usage, so use this for Organization/Institution
  • You should get an email with sign-up instructions (need more detail for this part, which I cannot do myself!)

Generating the token

  • Running ee.Authenticate() will output a URL (starting with https://code.earthengine.google.com/), click on it

  • You should see the Google Earth Engine Notebook Authenticator page: Notebookauthenticator

  • Select Read-only and click on Choose Project

  • Click on Create new Cloud project and fill in the id (which has to be unique!) and name fields, then click Select Choose_project

  • Back on the Notebook Authenticator page you should now see the newly created project as Cloud project

  • Click on Generate Token below it.

  • Choose a Google account (this should be the same that you are already logged in with)

  • Go through this warning (Click Continue) Unverified

  • Then grant your Earth Engine Notebook access (check both EarthEngine and Cloudstorage)

WantsAccess

  • Finally, get your token (will be in the orange box in this image). Click on the icon to the right of it to copy it. Token

  • Return to your notebook, paste (Control-V) your token into the entry box and hit Enter/Return(!)

  • You should see: Successfully saved authorization token.

  • You can now use EarthEngine data to generate 3D terrain models! Continue with the next cell in the notebook.