A simple NodeJS interface to NASA Mars InSight Mission weather API.

Installation

Using npm:

$ npm install --save mars-insight-weather-node

If you don't have or don't want to use npm:

$ cd ~/.node_modules
$ git clone git://github.com/gab.lau/mars-insight-weather-node.git

Documentation

Constructor

MarsInsightWeather(temperatureUnit, pressureUnit, windSpeedUnit)

Methods

request(callback)

Make the call to the API to take the data, the call is cached and reused for all other methods, there is an hour limit between two API calls to not overload the service. Requires a parameter for a callback function, see examples

getRawData()

Returns raw API result without units conversion

getConvertedRawData()

Returns raw API result with units conversion

getSolKeys()

Returns all sol keys available

getLatestSolKey()

Returns latest sol key available

getSol(sol_key)

Returns sol by sol_key

getLatestSol()

Returns latest sol

Units of measurement

Default units: 'C', 'Pa', 'm/s'

Temperature: 'C', 'F', 'K', 'R'
Pressure: 'Pa', 'hPa', 'kPa', 'MPa', 'bar', 'torr', 'psi', 'ksi'
Wind speed: 'm/s', 'km/h', 'm/h', 'knot', 'ft/s'

Usage

Example use:

var MarsInsightWeather = require('mars-insight-weather-node');
var marsweather = new MarsInsightWeather();

marsweather.request(function(err, response){
    console.log ("Temperature ", this.getLatestSol().AT);
    console.log ("Pressure ", this.getLatestSol().PRE);
    console.log ("Wind speed ", this.getLatestSol().HWS);
});

Example use with different units of measurement:

var MarsInsightWeather = require('mars-insight-weather-node');
var marsweather = new MarsInsightWeather('F', 'bar', 'km/h');

marsweather.request(function(err, response){
    console.log ("Temperature ", this.getLatestSol().AT);
    console.log ("Pressure ", this.getLatestSol().PRE);
    console.log ("Wind speed ", this.getLatestSol().HWS);
});

Example single sol structure:

  {
    "First_UTC": "2019-02-20T12:36:11Z", 
    "Last_UTC": "2019-02-21T13:15:46Z", 
    "Season": "winter", 
    "AT": { // Air temperature
      "av": -63.807, 
      "ct": 17754, 
      "mn": -95.101, 
      "mx": -13.177
    }, 
    "HWS": { // Wind speed
      "av": 4.138, 
      "ct": 8160, 
      "mn": 0.182, 
      "mx": 10.818
    }, 
    "PRE": { // Pressure
      "av": 720.716, 
      "ct": 177468, 
      "mn": 693.681, 
      "mx": 743.525
    }, 
    "WD": { // wind direction
      "0": {
        "compass_degrees": 0.0, 
        "compass_point": "N", 
        "compass_right": 0.0, 
        "compass_up": 1.0, 
        "ct": 150
      }, 
      "1": {
        "compass_degrees": 22.5, 
        "compass_point": "NNE", 
        "compass_right": 0.382683432365, 
        "compass_up": 0.923879532511, 
        "ct": 65
      }, 
      //...other...
      "most_common": {
        "compass_degrees": 225.0, 
        "compass_point": "SW", 
        "compass_right": -0.707106781187, 
        "compass_up": -0.707106781187, 
        "ct": 2497
      }
    }
  }, 

Running Unit Tests and Code coverage

Then simply run test this command: npm run test

For code coverage run this command: npm run coverage

Credits

All data provided by: NASA/JPL-Caltech/

License

MIT © Gabriele Lauricella