An Example

Here’s a simple example to get you started. Save the following in a file called example.d.

import betterr.r, betterr.vector;
import std.stdio;

void main() {
  startR();
  auto v = Vector([1.1, 2.2, 3.3]);
  writeln(v);
  foreach(ii; 0..3) {
    v[ii] = v[ii]*2.5;
  }
  writeln(v);
  closeR();
}

Compile as described on the compiling page and run:

ldmd2 -i example.d -L/usr/lib/R/library/RInside/lib/libRInside.so -L-lR
./example

Notes

1. Always start your program with startR() and end it with closeR(). If you don’t do that, you’re likely to run into segfaults for no obvious reason. The first thing you should check if getting segfaults is that you’ve called startR.
2. betterr.r provides basic interoperability features. startR and closeR are located in that module.
3. betterr.vector provides the Vector data structure.
4. writeln uses R to print the value of an R object, so the printed output will be in a familiar format if you’ve worked with R before.

Index    Repo