Using transparent colors in SAS Graphs


This graph certainly makes it clear!
I can see right through your lies!
Clearly, you know what you're talking about!
We need more transparency in our organization!

What was that all about, you might ask?!? ... I was just getting all the obvious puns out of the way, so I won't be tempted to use them later in this blog!   ;-)

Support for alpha-transparency (transparent colors) was added to SAS/GRAPH in SAS 9.3. At first glance, transparent colors might seem like a mostly 'decorative' feature, but it also provides some very strong capabilities for better visually analyzing data.

I recently had a conversation with LeRoy Bessler, one of the long-term SAS/GRAPH experts, about the possible uses of transparent colors, and he inspired me to create a collection of examples that demonstrate different ways to use transparency in graphs, and I wanted to share that collection with all my blog followers :)

Click the screen-capture below, to see the collection of 16 (so far) examples...

Can you think of other uses for transparency in graphs (or any more puns)? - I'm looking for more examples of both!



About Author

Robert Allison

The Graph Guy!

Robert has worked at SAS for over 25 years, and is perhaps the foremost expert in creating custom graphs using SAS/GRAPH. His educational background is in Computer Science, and he holds a BS, MS, and PhD from NC State University. He is the author of several conference papers, has won a few graphic competitions, and has written a book (SAS/GRAPH: Beyond the Basics).

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