Blogs

Programming Tips

Strengthen your programming skills with tips and techniques from the experts

Robert AllisonJune 14, 2019 0

Fine-tuning the date axis in your bar chart

In these modern times, my utility bill has a bar chart so I can see how my current consumption compares to my historical usage. I decided to create my own version of this utility bill bar chart, and make a few improvements along the way. If you're into SGplot bar

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Energy & Utilities

Data Visualization | Programming Tips

Robert AllisonJune 12, 2019 0

Converting from SAS/Graph to ODS Graphics - color control

In this 'Rosetta Graph' example, I demonstrate how to control bar chart colors in Gchart and SGplot. But first, here's a little diversion... some artwork in my office here at SAS. There's a *lot* of artwork hanging around at SAS, but this particular painting wasn't created by the SAS artists

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Advanced Analytics | Programming Tips

Rick WicklinJune 12, 2019 0

Leave-one-out statistics and a formula to update a matrix inverse

For linear regression models, there is a class of statistics that I call deletion diagnostics or leave-one-out statistics. These observation-wise statistics address the question, "If I delete the i_th observation and refit the model, what happens to the statistics for the model?" For example: The PRESS statistic is similar to

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