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Strengthen your programming skills with tips and techniques from the experts

Advanced Analytics | Analytics | Machine Learning | Programming Tips

Nelson Grajales

Nelson GrajalesDecember 11, 2019 0

Machine Learning with SASPy: Exploring and Preparing your data - Part 3

Parts 1 and 2 of this blog post discussed exploring and preparing your data using SASPy. To recap, Part 1 discussed how to explore data using the SASPy interface with Python. Part 2 continued with an explanation of how to prepare your data to use it with a machine-learning model.

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Analytics | Learn SAS | Machine Learning | Programming Tips

Nelson Grajales

Nelson GrajalesDecember 11, 2019 0

Adding SAS® procedures to the SASPy interface to Python

Bringing the power of SAS to your Python scripts can be a game changer. An easy way to do that is by using SASPy, a Python interface to SAS allowing Python developers to use SAS® procedures within Python. However, not all SAS procedures are included in the SASPy library. So,

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Analytics | Programming Tips

Rick WicklinDecember 11, 2019 0

Swap elements in binary matrices

Binary matrices are used for many purposes. I have previously written about how to use binary matrices to visualize missing values in a data matrix. They are also used to indicate the co-occurrence of two events. In ecology, binary matrices are used to indicate which species of an animal are

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Data Visualization | Programming Tips

Robert AllisonDecember 10, 2019 0

Mapping Antarctica, with a tile-based map

As we're getting into December, and the weather is getting colder, I thought it would be cool to plot some Antarctica data. You might remember I did this about 1.5 years ago, using good-old Proc Gmap, a special projection, and lots of tricky annotation. Well, this time let's use the

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Learn SAS | Programming Tips

Kim WilsonDecember 10, 2019 0

Old reliable: DATA step tips and tricks

The DATA step remains a popular way to create and manipulate SAS data sets. Whether you are reshaping a data set entirely or simply assigning values to a new variable, there are numerous tips and tricks that you can use to save time and keystrokes.

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Data Visualization | Learn SAS | Programming Tips

Leonid BatkhanDecember 9, 2019 0

How to compare SAS data tables for common/uncommon columns

SAS' Leonid Batkhan shows you how to compare SAS data sets that include common and uncommon columns. You'll learn how to check mark commonalities and color-code differences in data tables side-by-side columns and add a comments field to see greater detail.

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Learn SAS | Programming Tips

Shelley Sessoms

Shelley SessomsDecember 4, 2019 0

Gifts to give the SAS fan in your life

If you’re like me, you struggle to buy gifts. Most folks in my inner circle already have everything they need and most of what they want. Most folks, that is, except the tech-lovers. That’s because there’s always something new on the horizon. There’s always a new gadget or program. Or

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Programming Tips | SAS Administrators

Joe FurbeeDecember 3, 2019 0

developer.sas.com 2.0: More than just a pretty interface

Site relaunches with improved content, organization and navigation. In 2016, a cross-divisional SAS team created developer.sas.com. Their mission: Build a bridge between SAS (and our software) and open source developers. The initial effort made available basic information about SAS® Viya® and integration with open source technologies. In June 2018, the

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Data Visualization | Programming Tips

Robert AllisonDecember 3, 2019 0

Free maps to use with SGmap, in Base SAS!

If you don't have a SAS/Graph license, then you're probably using the ODS Graphics 'sg' procedures that come with Base SAS to create your graphs and maps. And if you've tried plotting data on a map, you probably noticed that SGmap lets you overlay point-data on an OpenStreetmap, but you

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Analytics | Programming Tips

Yinliang WuNovember 27, 2019 0

Implementing HMA, WMA & SMA with 27 lines of SAS code

With time series data analysis, we can apply moving average methods to predict data points without seasonality. This includes Simple Average (SA), Simple Moving Average (SMA), Weighted Moving Average (WMA), Exponential Moving Average (EMA), etc. For series with a trend but without seasonality, we can use linear, non-linear and autoregressive

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Learn SAS | Programming Tips

Samantha Gidlow

Samantha GidlowNovember 25, 2019 0

Are you a SAS certified professional?

The SAS Global Certification Program started in 1999 and has issued over 150,000 credentials to SAS users. Today, the program offers 23 different credentials across seven categories.

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Analytics | Data Visualization | Programming Tips

Rick WicklinNovember 25, 2019 0

Evaluate a quadratic polynomial in SAS

What is an efficient way to evaluate a multivariate quadratic polynomial in p variables? The answer is to use matrix computations! A multivariate quadratic polynomial can be written as the sum of a purely quadratic term (degree 2), a purely linear term (degree 1), and a constant term (degree 0).

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Data Visualization | Programming Tips

Robert AllisonNovember 22, 2019 0

These mortgage rates look shady to me!

The English language can be a bit tough to learn. One reason is that sometimes words can have more than one meaning. For example, the word shady can mean "of doubtful honesty or legality," or it can mean "giving shade from sunlight." Which of those meanings am I thinking about,

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Banking | Government

Data Visualization | Programming Tips

Rick WicklinNovember 18, 2019 0

Create a strip plot in SAS

My colleague, Mike Drutar, recently showed how to create a "strip plot" that shows the distribution of temperatures for each calendar month at a particular location. Mike created the strip plot in SAS Visual Analytics by using a point-and-click interface. This article shows how to create a similar graph by

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Learn SAS | Programming Tips

Ron CodyNovember 12, 2019 0

Testing the Assumption of Normality for Parametric Tests

The t-test is a very useful test that compares one variable (perhaps blood pressure) between two groups. T-tests are called t-tests because the test results are all based on t-values. T-values are an example of what statisticians call test statistics. A test statistic is a standardized value that is calculated

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Learn SAS | Programming Tips

Rick WicklinNovember 11, 2019 0

Round to even

In grade school, students learn how to round numbers to the nearest integer. In later years, students learn variations, such as rounding up and rounding down by using the greatest integer function and least integer function, respectively. My sister, who is an engineer, learned a rounding method that rounds half-integers

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Data Visualization | Programming Tips

Robert AllisonNovember 7, 2019 0

Does plotting data give you the jitters?

With all this sitting at a desk writing code, I have to do something to keep in shape. And for me, that something is paddling boats ... as fast as I can - and occasionally trying to race them. This past weekend I entered the race at Hunting Island, SC.

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Sports & Entertainment

Learn SAS | Programming Tips

Ron CodyNovember 6, 2019 0

Making your SAS code more readable

Learn about best-selling SAS author Ron Cody's programming standards.

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Analytics | Data Visualization | Programming Tips

Rick WicklinNovember 6, 2019 0

What are biplots?

Principal component analysis (PCA) is an important tool for understanding relationships in continuous multivariate data. When the first two principal components (PCs) explain a significant portion of the variance in the data, you can visualize the data by projecting the observations onto the span of the first two PCs. In

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Programming Tips

Grace WhiteisNovember 5, 2019 0

How to make the most of arrays with SAS® software and streamline your programming

Grace Whiteis of SAS Technical Support shows you how to capitalize on arrays using SAS software -- and streamline your code, whether it involves arrays or not.

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Data Visualization | Programming Tips

Robert AllisonOctober 31, 2019 0

Manifesting a 'Crazy Good' county ranking map

I was recently reading David Mintz's excellent SESUG 2018 conference paper on Five Crazy Good Visualizations and How to Plot Them, and saw a map that caught my eye. David showed how to create a similar map, but with completely different data - I decided to try creating a map

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Learn SAS | Programming Tips

Joe FurbeeOctober 31, 2019 0

Append tables in SAS® Viya® with REST APIs – a treat, no tricks

While growing up in the 80's, I watched The Golden Girls on TV with my Grandma Betty. Now, when my sister visits, we binge watch reruns on TV Land. I was excited when I saw for this Halloween, you could buy Golden Girls costumes! Too bad they sold out right

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Learn SAS | Programming Tips

Rick WicklinOctober 30, 2019 0

Compute the first or last day of a month or year

Every year at Halloween, I post an article that shows a SAS trick that is a real treat. This article shows how to use the INTNX function to find dates that are related to a specified date. The INTNX function is a sweet treat, indeed. I previously wrote an article

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Data Visualization | Learn SAS | Programming Tips

Leonid BatkhanOctober 30, 2019 0

How to create checklist tables in SAS®

Leonid Batkhan shows you easy ways to create a checklist table in SAS software.

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Learn SAS | Programming Tips

Susan SlaughterOctober 29, 2019 0

The Little SAS Book 6.0: The best-selling SAS book gets even better

Find out about the changes and enhancements to the best-selling book, The Little SAS Book.

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Learn SAS | Programming Tips

Rick WicklinOctober 28, 2019 0

Use regular expressions to specify variable names in SAS

A common task in SAS programming is to specify a list of variables that satisfy some pattern. You can specify lists for the KEEP= or DROP= data set options, and you can use lists of variables on many SAS statements such as the VAR and MODEL statements. Although SAS has

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Data Visualization | Programming Tips

Robert AllisonOctober 23, 2019 0

Just how fast was Eliud's 2 hour marathon?!?

Eliud Kipchoge recently ran a marathon in under 2 hours. It was a special marathon where they had set up the best possible conditions to help him achieve this goal (such as swapping in pace-setting runners to block the wind for him), so it won't count as the world record

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Sports & Entertainment

Programming Tips

Rick WicklinOctober 23, 2019 0

Perform matrix computations when the matrices don't fit in memory

In response to a recent article about how to compute the cosine similarity of observations, a reader asked whether it is practical (or even possible) to perform these types of computations on data sets that have many thousands of observations. The problem is that the cosine similarity matrix is an

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Programming Tips

Steven SoberOctober 22, 2019 0

SAS® Viya®: How to Emulate PROC SQL Using CAS-Enabled PROC FedSQL

Someone asked SAS' Steven Sober if the PROC SQL example noted first in this post could be refactored into PROC FedSQL so it could run faster by leveraging SAS Viya’s in-memory engine CAS? Yes. Here's how.

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Programming Tips

Elena ShternOctober 21, 2019 0

How SAS® Viya® fosters collaboration

When my younger son grabs a book or a toy from his older siblings without permission, his line of defense is always the same: “Sharing is caring!” Our kids' schools teach and reinforce this philosophy. Likewise, our family has rules to ensure peaceful, orderly sharing. Similarly, many organizations value collaboration.

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