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Install required packages

$ npm install

Start developing

$ npm run start

Set up the configuration file for Horizon server

To grab the data from RethinkDB via Horizon server, we need to add a configuration file called horizon-config.json in ./src/connectors/. The format of this configuration file is listed as follow:

{
    "horizon": {
        "host": "140.112.42.53",
        "port": 8181,
        "table": "firetony"
    }
}
  • host is the address of Horizon server.
  • port is the listening port of Horizon server.
  • table is the target table in RethinkDB.

Visualizing the data

Now, we can visualize the data stored in the RethinkDB. In this repository, we have created the table and inserted some humidity/temperature data in our database. To visualize the data in assigned time period, see the follwoing steps.

  1. Open the Vision app in browser image
  2. Click "add chart" button in the upper left. image
  3. Input the following yaml format to describe the data source 
    title: humidity
sources:
  - name: humidity
    type: 
start_time: '2019-05-15 14:29:23'
end_time: '2019-05-15 17:50:26'
segment:
aggr_func:
    image
  4. Show the chart image

Switch the backend from RethinkDB to Firebase

In src/connectors/index.js line 9:

export * from './rethinkdb-horizon'

change to

export * from './firestore'

and add a configuration file called firebase-config.json in ./src/connectors/. The format of this configuration file is listed as follow:

{  "apiKey": "",
   "authDomain": "",
   "databaseURL": "",
   "projectId": "",
   "storageBucket": "",
   "messagingSenderId": ""
}

Reference

https://github.com/Destinia/Vision

https://hackmd.io/KJYqoDNORlKfEEF0Ks67Hg