update vignette to use RcppEigen:::eigen_version (closes #71)

Author: eddelbuettel

ChangeLog

@@ -1,3 +1,8 @@
+2019-05-24  Dirk Eddelbuettel  <edd@debian.org>
+
+	* vignettes/RcppEigen-Introduction.Rnw: Update vignette to use
+	RcppEigen:::eigen_version() instead of .Call()
+
 2019-03-29  Dirk Eddelbuettel  <edd@debian.org>
 
 	* inst/skeleton/rcppeigen_hello_world.cpp: Rework first example to

inst/NEWS.Rd

@@ -7,6 +7,9 @@
   \itemize{
     \item Fixed skeleton package creation listing RcppEigen under Imports
     (James Balamuta in \ghpr{68} addressing \ghit{16}).
+    \item Small RNG use update to first example in skeleton package used
+    by package creation helper.
+    \item Update vignette example to use RcppEigen:::eigen_version().
   }
 }
 

vignettes/RcppEigen-Introduction.Rnw

@@ -132,13 +132,13 @@ matrices to represent projections in a visualization application. \pkg{Eigen}
 grew from there and has over the course of about a decade produced three
 major releases with \pkg{Eigen}3 being the current major version. To
 check the minor and patch version numbers, load the \pkg{RcppEigen}
-package and call
+package and call this (internal) helper function:
 \begin{CodeInput}
-R> .Call("eigen_version", FALSE)
+R> RcppEigen:::eigen_version(FALSE)
 \end{CodeInput}
 \begin{CodeOutput}
 major minor patch 
-    3     1     1 
+    3     3     5 
 \end{CodeOutput}
 \pkg{Eigen} is of interest as the \proglang{R} system for statistical
 computation and graphics \citep{R:Main} is itself easily extensible. This is