In a Scala application, an instance of this class is created using its companion object as shown below.
In an R script, the object R is an instance of this class available in an rscala bridge created by calling the function
scala from the package rscala. It is through this instance that
callbacks to the original R interpreter are possible.
All of the evaluation methods of this class have the same signature. The first argument is a template for an R expression, where
%- is a placeholder for items that are provided as variable arguments. The result type is indicated by the suffix of
the method name. See examples below.
This class is threadsafe.
val R = org.ddahl.rscala.RClient()
val a = R.evalD0("sd(rnorm(1000, mean=%-, sd=%-))", 1.0, 2.0)
R.eval("primes <- %-", Array(2, 3, 5, 7, 11, 13, 17, 19, 23))
val rFunction = R.evalObject("function(x) x*primes")
val primesTimesTwo = R.evalI1("%-(2)", rFunction)
val m = R.evalI2("matrix(rbinom(%-, size=10, prob=0.5), nrow=2)", 8)
R.quit()
A bridge to R.
In a Scala application, an instance of this class is created using its companion object as shown below.
In an R script, the object
Ris an instance of this class available in an rscala bridge created by calling the functionscalafrom the package rscala. It is through this instance that callbacks to the original R interpreter are possible.All of the evaluation methods of this class have the same signature. The first argument is a template for an R expression, where
%-is a placeholder for items that are provided as variable arguments. The result type is indicated by the suffix of the method name. See examples below.This class is threadsafe.