NASA’s OpenNEX Datasets

NASA has a really cool website: https://nex.nasa.gov/nex/static/htdocs/site/extra/opennex/ The website allows you to access large data sets and connect to virtual lab’s using Amazon AWS. Not only do you get the data sets, virtual lab’s, but you also have the ability to win prizes and listen to various lecturers on this subject Continue Reading

R Functions

Much like my other basic post on functions… R has it’s own use of functions. In R, you assign a function class to a object (remember in R class and object mean something different then in OO languages.)  A class is like a type (int, character, etc.)  and object is Continue Reading

R Control structures

Much like other languages, R has a set of control structures.  Namely: If / else (if a condition is met, do something) For (loop for x number of times) While (while something is true, loop) Repeat (infinite loop) Break (exit a loop) Next (skip an iteration of a loop) Return Continue Reading

R Info – basics

R Basics R History R is derived from S that came from Bell Labs.  S was written over Fortran.  S was later rewritten to be driven by C. R Types base types in R are called “atomic” types. The atomic types in R are: character numeric (real numbers) integer complex Continue Reading