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- <!doctype html>
- <html>
- <head>
- <meta charset="utf-8">
- <title>CodeMirror: R mode</title>
- <link rel="stylesheet" href="../../lib/codemirror.css">
- <script src="../../lib/codemirror.js"></script>
- <script src="r.js"></script>
- <style>
- .CodeMirror { border-top: 1px solid silver; border-bottom: 1px solid silver; }
- .cm-s-default span.cm-semi { color: blue; font-weight: bold; }
- .cm-s-default span.cm-dollar { color: orange; font-weight: bold; }
- .cm-s-default span.cm-arrow { color: brown; }
- .cm-s-default span.cm-arg-is { color: brown; }
- </style>
- <link rel="stylesheet" href="../../doc/docs.css">
- </head>
- <body>
- <h1>CodeMirror: R mode</h1>
- <form><textarea id="code" name="code">
- # Code from http://www.mayin.org/ajayshah/KB/R/
- # FIRST LEARN ABOUT LISTS --
- X = list(height=5.4, weight=54)
- print("Use default printing --")
- print(X)
- print("Accessing individual elements --")
- cat("Your height is ", X$height, " and your weight is ", X$weight, "\n")
- # FUNCTIONS --
- square <- function(x) {
- return(x*x)
- }
- cat("The square of 3 is ", square(3), "\n")
- # default value of the arg is set to 5.
- cube <- function(x=5) {
- return(x*x*x);
- }
- cat("Calling cube with 2 : ", cube(2), "\n") # will give 2^3
- cat("Calling cube : ", cube(), "\n") # will default to 5^3.
- # LEARN ABOUT FUNCTIONS THAT RETURN MULTIPLE OBJECTS --
- powers <- function(x) {
- parcel = list(x2=x*x, x3=x*x*x, x4=x*x*x*x);
- return(parcel);
- }
- X = powers(3);
- print("Showing powers of 3 --"); print(X);
- # WRITING THIS COMPACTLY (4 lines instead of 7)
- powerful <- function(x) {
- return(list(x2=x*x, x3=x*x*x, x4=x*x*x*x));
- }
- print("Showing powers of 3 --"); print(powerful(3));
- # In R, the last expression in a function is, by default, what is
- # returned. So you could equally just say:
- powerful <- function(x) {list(x2=x*x, x3=x*x*x, x4=x*x*x*x)}
- </textarea></form>
- <script>
- var editor = CodeMirror.fromTextArea(document.getElementById("code"), {});
- </script>
- <p><strong>MIME types defined:</strong> <code>text/x-rsrc</code>.</p>
- <p>Development of the CodeMirror R mode was kindly sponsored
- by <a href="http://ubalo.com/">Ubalo</a>, who hold
- the <a href="LICENSE">license</a>.</p>
- </body>
- </html>
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