rinruby

Execute R code from Ruby.

• Forked from http://rinruby.ddahl.org/

INSTALL

• gem install rootapp-rinruby

USAGE

require "rinruby"

R = RinRuby.new

n = 10
beta_0 = 1
beta_1 = 0.25
alpha = 0.05
seed = 23423
R.assign('x', (1..n).entries)
R.eval <<EOF
  set.seed(#{seed})
  y <- #{beta_0} + #{beta_1}*x + rnorm(#{n})
  fit <- lm( y ~ x )
  est <- round(coef(fit),3)
  pvalue <- summary(fit)$coefficients[2,4]
EOF
puts "E(y|x) ~= #{R.pull('est')[0]} + #{R.pull('est')[1]} * x"
if R.pull('pvalue') < alpha
  puts "Reject the null hypothesis and conclude that x and y are related."
else
  puts "There is insufficient evidence to conclude that x and y are related."
end

Please note:

The interface of RinRuby has slightly changed compared to the previous versions. Variables cannot be assigned directly anymore. But you need to use assign(name, value) to assign variables from the ruby side and pull(name) to retrieve assigned variables in R in Ruby.

REQUIREMENTS

• R
• Ruby >= 2.0.0

LICENSE

GPL-3. See LICENSE.txt for more information.