X-Git-Url: https://git.donarmstrong.com/?p=don.git;a=blobdiff_plain;f=r%2Flearning_r%2Fvariables_and_objects.mdwn;h=f75c164cd006940e2b95fd107f1c14d6fd732b76;hp=936088743db7a19dbc52ad31f570cb4dbad1d2c5;hb=24664bb0f062167554450bfcaaa628908b44dc80;hpb=f69ad2fba5b9988be645aa0a0f5d75e55c6db914

diff --git a/r/learning_r/variables_and_objects.mdwn b/r/learning_r/variables_and_objects.mdwn
index 9360887..f75c164 100644
--- a/r/learning_r/variables_and_objects.mdwn
+++ b/r/learning_r/variables_and_objects.mdwn
@@ -1,17 +1,47 @@
 [[!meta title="Learning R: Basic Variables and Objects"]]
 
-Eventually here, you'll see some explanation of basic usage of
-variables and objects in R. For the time being, there are just some
-tests of my
-[sweavealike](http://git.donarmstrong.com/?p=ikiwiki_plugins.git;a=blob;f=sweavealike.pm;hb=HEAD)
-plugin for IkiWiki.
+Variables and Objects
+---------------------
+
+Like most computer languages, R uses variables as a means of storing
+information in memory and retrieving it later. Variables can be
+assigned to using the `<-` or `=` operator. For example, to assign the
+number `5` to the variable `foo`, you would write
+
+[[!sweavealike echo=1 results="hide" code="""
+foo <- 5
+"""]]
+
+Variables can retrieved simply by referring to them by name. For
+example, to add `8` to the variable `foo` and store the result in
+`bar`, you would do the following:
+
+[[!sweavealike echo=1 results="hide" code="""
+bar <- foo + 8
+"""]]
+
+
+In R, variables are more correctly called objects, because they have
+structure and do not directly refer to a specific memory location.
+
+Basic Types
+----------
+
+Vectors
+=======
+
+A vector is the major data type used in R. You can think of it as a
+line of cells, each containing a value of the same type.
+[Type here means a number or a string.]
+
+
+Lists
+=====
+
+
+Object Attributes
+-----------------
 
 
-[[!sweavealike verbatim=1 code=<<END
-a <- 1
-a <- a + 10
-print(a)
-END]]
 
 
-testing