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, simulation, 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

Direct me to the nuclear Bessels!

When I was an undergraduate physic major, my favorite professor would start each class with a joke or pun. One day he began class with ... Read More

Improving the NC vehicle inspection pie chart

North Carolina is a state that requires yearly inspections of motor vehicles. An inspection checks for safety features (lights, brakes, tires,....) as well as checking ... Read More

No major hurricanes have hit the US coast recently. Lucky us!

Perhaps you saw the headlines earlier this week about the fact that it has been nine years since the last major hurricane (category 3, 4, ... Read More

Two-stage sampling of hierarchical data in SAS

I always learn something new when I attend SAS Global Forum, and it often results from an informal conversations in The Quad or in a ... Read More

Finding observations that satisfy multiple conditions: The LOC-ELEMENT technique

A common task in data analysis is to locate observations that satisfy multiple criteria. For example, you might want to locate all zip codes in ... Read More

Matrix computations at SAS Global Forum 2015

Last week I attended SAS Global Forum 2015 in Dallas. It was packed with almost 5,000 attendees. I learned many interesting things at the conference, ... Read More

An easy way to clear your SAS titles

Did you know that if you have set multiple titles in SAS, that there is an easy way to remove them? For example, suppose that ... Read More

Create and use a permutation matrix in SAS

Suppose that you compute the correlation matrix (call it R1) for a set of variables x1, x2, ..., x8. For some reason, you later want ... Read More

Create a cascade chart in SAS

Sometimes different communities use the same name for different objects. To a soldier, "boots" are rugged, heavy, high-top foot coverings. To a soccer (football) player, ... Read More

Sum a series in SAS

A customer asked: How do we go about summing a finite series in SAS? For example, I want to compute for various integers n ≥ ... Read More