davepadrino / r

Using R from Meteor

Executing R script in MeteorJS (also Apache Spark and Hadoop!)

We are using npm RIO package from https://github.com/albertosantini/node-rio

Steps to go: (after clone the repo)

install RServe in your R console (you can use R Studio)

install.packages("Rserve")
install.packages("RSclient")

After install those packages you should run the next lines to run RServe (TCP/IP server for R):

require("Rserve")
Rserve(args  = "--vanilla")

And you can shutdown your R Server by typing:

require("RSclient")
c <- RSconnect()
RSshutdown(c)

Now you will have to change the global path of your folder where we keep the R files in:

lib/global_vars.js

In this case the route is , you can change this or find the work around to make this usefull without the need to define a global

route = "/home/[user]/Documentos/meteor/r/r_code/";

Finally you can go a play around with the few examples we have here

ENJOY!!

Examples

Example 1

• Return a simple command from R in JSON and print in the console of browser

Example 2

• Send data to a specific function in R a get back the response in a JSON

Example 3

• Execute sparklyr (Spark library to execute machine learning algorithms using R) and return JSON , you will need to install "sparklyr" in R

Example 4

• Another example with sparklyr

Example 5

• Read csv from HDFS (Hadoop Distributed File System)(you need to install Hadoop and configure it)

Example 6

• Example of plot in R and save it in your file system like .png , remember to change the file /lib/global_vars.js where you want to keep your image..