NASA Earth

This is a wrapper for the NASA earth API.

This allows to retrieve pictures taken by the satellite Landsat 8 for any coordinates on Earth, and at any point in time!

Note : You will need to request an API key from NASA to use this gem.

Installation

Simply type :

gem install nasa_earth

Or add this line to your Gemfile :

gem 'nasa_earth'

Imagery endpoint

Retrieve an URL of an image at specific coordinates.

Example

require 'nasa_earth'
n = NasaEarth.new api_key: 'your_api_key'
n.imagery lat: 48.8583701, lon: 2.2944813

=> {"code"=>"200", "message"=>"OK", "content"=>{
    "date"=>"2015-08-26T10:40:37",
    "url"=>"https://earthengine.googleapis.com/api/thumb?thumbid=d29fb6c5e2259cc02a7634c3f63b1265&token=13516c99554e9196d4e4c50e5c171c92",
    "id"=>"LC8_L1T_TOA/LC81990262015238LGN00"}}

Parameters

Parameter	Type	Mandatory	Description
lat	Float	Yes	Latitude
lon	Float	Yes	Longitude
dim	Float	No	width and height in degrees
date	String (format YYYY-MM-DD)	No	date of image
cloud_score	Boolean	No	calculate the percentage of cloud

Assets endpoint

Retrieve different date-time for available imagery at specific coordinates

Example

require 'nasa_earth'
n = NasaEarth.new
n.api_key = 'your_api_key'
n.assets lon: 10.0, lat: 11

=> {"code"=>"200", "message"=>"OK", "content"=>{"count"=>46, "results"=>
  [{"date"=>"2013-05-12T09:38:57", "id"=>"LC8_L1T_TOA/LC81870522013132LGN01"},
   {"date"=>"2013-05-28T09:39:04", "id"=>"LC8_L1T_TOA/LC81870522013148LGN00"},
   {"date"=>"2013-06-13T09:39:00", "id"=>"LC8_L1T_TOA/LC81870522013164LGN00"},
   ...
  ]}}

Parameters

Parameter	Type	Mandatory	Description
lat	Float	Yes	Latitude
lon	Float	Yes	Longitude
begin	String (format YYYY-MM-DD)	No	beginning of date range
end	String (format YYYY-MM-DD)	No	end of date range