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<article> <h2>R mode</h2> <form><textarea id=“code” name=“code”> # Code from 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="https://twitter.com/ubalo">Ubalo</a>.</p> </article>