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Rick Wicklin 0
Creating a basic heat map in SAS

Heat maps have many uses. In a previous article, I showed how to use heat maps with a discrete color ramp to visualize matrices that have a small number of unique values, such as certain covariance matrices and sparse matrices. You can also use heat maps with a continuous color

Data Visualization
Sanjay Matange 0
More on Spaghetti Plots

In her article Creating Spaghetti Plots Just got Easy, Lelia McConnell has provided us a glimpse into some new useful features in the SAS 9.4M2 release.  The term Spaghetti plots generally refers to cases where time series plots have to be  identified by multiple group classifications.  The support for the

Programming Tips
Russ Tyndall 0
Macro quoting made easy

Are there times when you need to pass special characters to a macro variable but cannot find the right technique to accomplish the task?  In this article I’ll discuss the different macro quoting functions and give a simple technique to help you determine which macro quoting function to use. Why

Data Visualization
Sanjay Matange 0
Epidemic Curve Graph

A few weeks back I wrote an article on Grouped Timeline for creating a stacked timeline for onset of different virus.  The idea in that article was to display a stacked needle on a time axis using a HighLow plot. Such graphs are also referred to as EPI or Epidemic Curve

Rick Wicklin 0
Stigler's seven pillars of statistical wisdom

Wisdom has built her house; She has hewn out her seven pillars.      – Proverbs 9:1 At the 2014 Joint Statistical Meetings in Boston, Stephen Stigler gave the ASA President's Invited Address. In forty short minutes, Stigler laid out his response to the age-old question "What is statistics?" His answer was

Analytics | Learn SAS
Eric Rossland 0
A tale of two administrators

You are the new SAS Administrator. After the initial shock or excitement, you sit back and wonder, “What does that MEAN???” In an enterprise environment there are often divisions of duties. The SAS Intelligence Platform is no exception. Just take a look at the architecture. Just looking at this picture,

Rick Wicklin 0
Reversing the limits of integration in SAS

In SAS software, you can use the QUAD subroutine in the SAS/IML language to evaluate definite integrals on an interval [a, b]. The integral is properly defined only for a < b, but mathematicians define the following convention, which enables you to make sense of reversing the limits of integration: