Hello World from OSS Silicon Valley

_ Prerequisite

• Ubuntu Server installation (You can refer HowToUse/UbuntuServer/14.04)
• Ruby On Rails setup on Heroku (You can refer HowToUse/RubyOnRails/4.2/Heroku/2015

_ HowToUse

Step.1

Prepare a new project, and add init.r to initialize R environment. You can refer sample of init.r here . In order to make a communication between Rails app and R server, you need to install Rserve-client or HowToUse/RubyOnRails/4.2/RinRuby/2.0.

Step.2

Create Heroku application.

$ heroku login
$ heroku create <Application Name> --stack cedar-14 --buildpack https://github.com/virtualstaticvoid/heroku-buildpack-r.git#cedar-14

_ By 2015, we used heroku-buildpack-multi for multiple buildpacks, but we don't need it in 2016.

Step.3

Add buildpacks for rails to the project.

$ heroku buildpacks:add heroku/ruby

Step.4

Push the files to Heroku server.

$ git push heroku master

Step.5

Launch R server on Heroku.

$ heroku run R

_ Author

S.Yatsuzuka