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A much simpler version of the example is provided in the file newApiExample.r.
With littler installed, it can be run 'as is' as a shell script; else it can
be sourced into R.
-- Dirk Eddelbuettel and Romain Francois, 06 Feb 2010
This directory provides a simple example of how an R function
can be passed back and forth between R and C++.
We define the function at the R level, pass it to C++ using the Rcpp
interface and have C++ call it. This works by subclassing the C++ class
RcppFunction (from Rcpp) and adding a new member function transformVector()
which is vector-valued. We then instantiate this new class in the C++
function called from R -- and by calling the transformVector() function from
C++ we get R to operate on the supplied vector.
In this demo, we simply exponeniate the data vector but also plot it as a
side effect -- effectively giving us R plotting from a C++ function.
-- Dirk Eddelbuettel, 29 Sep 2009
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