Scoping functions in R

I want to test embedding source code in the blog by using the handy Gist tool provided by GitHub. These two R functions are a good opportunity to test out embedding a Gist on the website. These functions allow for threshold testing within a vector in R, or over rows or columns of a dataframe as well as is shown at the end of the code. They are not complex, and probably not as efficient as they could be, but it is an example of writing readable and well-documented code. And, it may be of use to others. Eventually these will be incorporated into the LDS_TOOLS package, which you can find on GitHub currently under development.