Merge pull request #1 from rdpeng/master

Pull 08/09/2015

Author: ReikoMori

02_RProgramming/DataTypes/Introduction to the R Language.pdf

@@ -8,7 +8,7 @@ framework   : io2012        # {io2012, html5slides, shower, dzslides, ...}
 highlighter : highlight.js  # {highlight.js, prettify, highlight}
 hitheme     : tomorrow      # 
 url:
-  lib: ../../libraries
+  lib: ../../librariesNew
   assets: ../../assets
 widgets     : [mathjax]            # {mathjax, quiz, bootstrap}
 mode        : selfcontained # {standalone, draft}
@@ -200,7 +200,9 @@ NAs introduced by coercion
 > as.logical(x)
 [1] NA NA NA
 > as.complex(x)
-[1] 0+0i 1+0i 2+0i 3+0i 4+0i 5+0i 6+0i
+[1] NA NA NA
+Warning message:
+NAs introduced by coercion 
 ```
 
 ---
@@ -472,4 +474,4 @@ Data Types
 
 - data frames
 
-- names
+- names