5 <title>CodeMirror: R mode</title>
6 <link rel="stylesheet" href="../../lib/codemirror.css">
7 <script src="../../lib/codemirror.js"></script>
8 <script src="r.js"></script>
10 .CodeMirror { border-top: 1px solid silver; border-bottom: 1px solid silver; }
11 .cm-s-default span.cm-semi { color: blue; font-weight: bold; }
12 .cm-s-default span.cm-dollar { color: orange; font-weight: bold; }
13 .cm-s-default span.cm-arrow { color: brown; }
14 .cm-s-default span.cm-arg-is { color: brown; }
16 <link rel="stylesheet" href="../../doc/docs.css">
19 <h1>CodeMirror: R mode</h1>
20 <form><textarea id="code" name="code">
21 # Code from http://www.mayin.org/ajayshah/KB/R/
23 # FIRST LEARN ABOUT LISTS --
24 X = list(height=5.4, weight=54)
25 print("Use default printing --")
27 print("Accessing individual elements --")
28 cat("Your height is ", X$height, " and your weight is ", X$weight, "\n")
31 square <- function(x) {
34 cat("The square of 3 is ", square(3), "\n")
36 # default value of the arg is set to 5.
37 cube <- function(x=5) {
40 cat("Calling cube with 2 : ", cube(2), "\n") # will give 2^3
41 cat("Calling cube : ", cube(), "\n") # will default to 5^3.
43 # LEARN ABOUT FUNCTIONS THAT RETURN MULTIPLE OBJECTS --
44 powers <- function(x) {
45 parcel = list(x2=x*x, x3=x*x*x, x4=x*x*x*x);
50 print("Showing powers of 3 --"); print(X);
52 # WRITING THIS COMPACTLY (4 lines instead of 7)
54 powerful <- function(x) {
55 return(list(x2=x*x, x3=x*x*x, x4=x*x*x*x));
57 print("Showing powers of 3 --"); print(powerful(3));
59 # In R, the last expression in a function is, by default, what is
60 # returned. So you could equally just say:
61 powerful <- function(x) {list(x2=x*x, x3=x*x*x, x4=x*x*x*x)}
64 var editor = CodeMirror.fromTextArea(document.getElementById("code"), {});
67 <p><strong>MIME types defined:</strong> <code>text/x-rsrc</code>.</p>
69 <p>Development of the CodeMirror R mode was kindly sponsored
70 by <a href="http://ubalo.com/">Ubalo</a>, who hold
71 the <a href="LICENSE">license</a>.</p>