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Chris Hemedinger
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Director, SAS User Engagement

+Chris Hemedinger is the Director of SAS User Engagement, which includes our SAS Communities and SAS User Groups. Since 1993, Chris has worked for SAS as an author, a software developer, an R&D manager and a consultant. Inexplicably, Chris is still coasting on the limited fame he earned as an author of SAS For Dummies

Chris Hemedinger 0
What's the difference between 0 and -0?

My daughter's math lessons this year have included the concept of negative numbers (that is, numbers that are less than zero, not numbers that have a bad attitude). She has used number lines such as this one to help her while she completes her homework: Notice that in this number

Chris Hemedinger 0
Too many pies can be hard to digest

On his SAS and R blog, Ken K. recently posted an example of a visualization technique called "small multiples". In this exercise, Ken shows the programming technique for replicating a particular series of pie charts in R as well as in SAS. It's a useful exercise to learn from, but

Chris Hemedinger 0
SAS-L: 25 years old and still spry

The popular mailing list for the SAS user community hits a milestone this weekend by turning 25. 25 is often referred to as the "silver anniversary", but for a quarter century SAS users have found gold among the messages in this list, which feature everything from questions and answers about

Chris Hemedinger 0
Poetry on our own terms

Within the SAS documentation there must be thousands of unique words.  But ten words occur more than any others within the SAS documentation corpus: SAS, data, statement, option, set, value, variable,  PROC, model, table. This is according to one of our staff terminologists, Vicki Leary, who helps to keep our use of these words consistent and

Learn SAS
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Ron Cody is giving me homework

On the SAS Dummy blog, I often receive questions that smack of homework assignments. After all, SAS programming is taught in universities (and even high schools) around the world. So I didn't consider it unusual when I received this question recently: Write a short DATA _NULL_ step to determine the

Chris Hemedinger 0
What's our sign?

Rick Wicklin and I are engaged in an arms race of birthday-related blog posts.  To recap: Rick analyzed national data about births in the USA and what time of year they are most likely to occur. I responded by analyzing the birthdays of my Facebook friends. Rick responded by analyzing

Chris Hemedinger 0
Running Windows PowerShell Scripts

Windows PowerShell is one of my favorite tools to use for gathering information from my PC and network, and also for automating processes.  If you are familiar with UNIX shells (such as Korn shell or its variants), you will probably be very comfortable with Windows PowerShell.  Just like its UNIX

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Birthdays among friends

Earlier today, Rick posted interesting information about which time of year the most babies are born, at least in the USA. I don't have data nearly as extensive as what's available at the NCHS, but I do have a sample of birthday records to compare against Rick's findings.  My sample

Chris Hemedinger 0
The unlikely pedigree of sample data in SAS

We ship many sample data sets with SAS products. By using well-understood sample data sets, we can teach concepts or show off product features without distracting the audience/students with data collection or prep. At least, that's the way it's supposed to work. But occasionally the sample data can cause a

Chris Hemedinger 0
A Google Fight is not a fair fight

At least, that's according to my colleague, Rick Wicklin.  In a recent blog post, Rick points out that estimating popularity based on results of Google searches is a bad idea. Well, that just disqualified my claim that PROC REPORT is more popular than PROC TABULATE, as measured via a GoogleFight.

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