Rick Wicklin
Rick Wicklin RSS
Research Statistician Developer

Rick Wicklin, PhD, is a distinguished researcher in computational statistics at SAS and is a principal developer of PROC IML and SAS/IML Studio. His areas of expertise include computational statistics, statistical graphics, and modern methods in statistical data analysis. Rick is author of the books Statistical Programming with SAS/IML Software and Simulating Data with SAS. Follow @RickWicklin on Twitter.

Recent Posts

Read from one data set and write to another with SAS/IML

Many people know that the SAS/IML language enables you to read data from and write results to multiple SAS data sets. When you open a ... Read More

Handling run-time errors in user-defined modules

I received the following email from a SAS/IML programmer: I am getting an error in a PROC IML module that I wrote. The SAS Log ... Read More

An exploratory technique for visualizing the distributions of 100 variables

In a previous blog post I showed how to order a set of variables by a statistic. After reshaping data, you can create a graph ... Read More

Order variables by values of a statistic

When I create a graph of data that contains a categorical variable, I rarely want to display the categories in alphabetical order. For example, the ... Read More

Ciphers, keys, and cryptoquotes

Today is my fourth blog-iversary: the anniversary of my first blog post in 2010. To celebrate, I am going to write a series of fun ... Read More

How to create a hexagonal bin plot in SAS

While I was working on my recent blog post about two-dimensional binning, a colleague asked whether I would be discussing "the new hexagonal binning method ... Read More

Counting observations in two-dimensional bins

Last Monday I discussed how to choose the bin width and location for a histogram in SAS. The height of each histogram bar shows the ... Read More

Choosing bins for histograms in SAS

When you create a histogram with statistical software, the software uses the data (including the sample size) to automatically choose the width and location of ... Read More

Analyzing activity-tracker data: How many steps per day do YOU take?

My wife got one of those electronic activity trackers a few months ago and has been diligently walking every day since then. At the end ... Read More

Creating heat maps in SAS/IML

In a previous blog post, I showed how to use the graph template language (GTL) in SAS to create heat maps with a continuous color ... Read More