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Programming Tips

Strengthen your programming skills with tips and techniques from the experts

Data for Good | Data Visualization | Programming Tips

Robert AllisonApril 23, 2018 0

Can you guess which 10 rivers produce 95% of the ocean's plastic pollution?

Plastic pollution in the oceans is becoming a huge problem. And, as with any problem, finding the solution starts with identifying the source of the problem. A recent study estimated that 95% of the plastic pollution in our oceans comes from 10 rivers - let's put some visual analytics to

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Learn SAS | Programming Tips

Russ TyndallApril 20, 2018 0

How to expand the number of available SAS functions within the macro language

The %SYSFUNC macro function allows you to access most SAS® functions. In this blog post, I demonstrate how %SYSFUNC can help in your programming needs when a macro function might not exist. I'll also share the formatting feature that is built in to %SYSFUNC and introduce the %QSYSFUNC that masks the returned value.

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Data Visualization | Learn SAS | Programming Tips

Robert AllisonApril 19, 2018 0

A periodic table to help you with your SAS ODS graphics!

There were 97 e-posters in The Quad demo room at SAS Global Forum this year. And the one that caught my eye was Ted Conway's "Periodic Table of Introductory SAS ODS Graphics Examples." Here's a picture of Ted fielding some questions from an interested user... He created a nice/fun graphic,

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Programming Tips

Steven SoberApril 18, 2018 0

How to Emulate DESCENDING BY Variables in DATA Step Code that Runs Distributed in SAS® Viya™

DESCENDING BY Variables in DATA Step Code that Runs Distributed in SAS Viya

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Programming Tips

Rick WicklinApril 18, 2018 0

The sweep operator: A fundamental operation in regression

The sweep operator performs elementary row operations on a system of linear equations. The sweep operator enables you to build regression models by "sweeping in" or "sweeping out" particular rows of the X`X matrix. As you do so, the estimates for the regression coefficients, the error sum of squares, and

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Programming Tips

Rick WicklinApril 16, 2018 0

Random permutations without duplicates

A colleague and I recently discussed how to generate random permutations without encountering duplicates. Given a set of n items, there are n! permutations My colleague wants to generate k unique permutations at random from among the total of n!. Said differently, he wants to sample without replacement from the

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Learn SAS | Programming Tips

Rick WicklinApril 11, 2018 0

Find the unique rows of a numeric matrix

Sometimes it is important to ensure that a matrix has unique rows. When the data are all numeric, there is an easy way to detect (and delete!) duplicate rows in a matrix. The main idea is to subtract one row from another. Start with the first row and subtract it

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Learn SAS | Programming Tips

SAS JediApril 9, 2018 0

Jedi @ SASGF: Working with Big Data in SAS

The SAS Jedi Mark Jordan presents his SAS Global Forum 2018 paper "Working with Big Data in SAS"

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Analytics | Data Visualization | Programming Tips

Robert AllisonApril 6, 2018 0

Did attempted border crossings really 'surge' in March?

During the past few days, several news outlets told us that the number of illegal border crossings 'surged' in March 2018. This is a topic that interests me, therefore I wanted to see if the data supported what the news was claiming... Trump's desire to secure the US borders is

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Programming Tips

Chris Hemedinger

Chris HemedingerApril 4, 2018 0

SAS functions to encode and decode data for the Web

Sir Tim Berners-Lee is famous for inventing the World Wide Web and for the construction of URLs -- a piece of syntax that every 8-year-old is now familiar with. According to the lore, when Sir Tim invented URLs he did not imagine that Internet surfers of all ages and backgrounds

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Learn SAS | Programming Tips

Mastering the SAS® DS2 Procedure book cover image

SAS JediApril 4, 2018 0

Jedi SAS Tricks: Transwarp Processing with DS2 in SAS® Viya®

When speed is required at scale, it's hard to beat parallel processing data in memory with DS2 and SAS® Viya® with the amazing Cloud Analytic Services (CAS)!

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Programming Tips

Rick WicklinApril 4, 2018 0

Distance correlation

Correlation is a statistic that measures how closely two variables are related to each other. The most popular definition of correlation is the Pearson product-moment correlation, which is a measurement of the linear relationship between two variables. Many textbooks stress the linear nature of the Pearson correlation and emphasize that

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Analytics | Data Visualization | Programming Tips

Robert AllisonApril 2, 2018 0

Tracking the reentry of China's space station

If you grew up as a space-junkie kid like me, then you've probably been watching the news for the past few days, wondering when and where China's Tiangong 1 space station was going to fall out of orbit, and crash to Earth. According to Popular Mechanics (PM), that happened at 8:16pm

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Learn SAS | Programming Tips

Rick WicklinApril 2, 2018 0

The chi-square test: An example of working with rows and columns in SAS

As a general rule, when SAS programmers want to manipulate data row by row, they reach for the SAS DATA step. When the computation requires column statistics, the SQL procedure is also useful. When both row and column operations are required, the SAS/IML language is a powerful addition to a

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Advanced Analytics | Data Management | Programming Tips

Andrew KramerMarch 29, 2018 0

Implicit SQL Pass-through to Hive in SAS Viya

With the release of SAS Viya 3.3, you now have the ability to pass implicit SQL queries to a variety of SQL data sources, including Hive. Here's what happens as users write SAS compliant SQL code.

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Analytics | Data Visualization | Programming Tips

Robert AllisonMarch 28, 2018 0

Can you name that music media player?

These days, it's all about music streaming ... You sign up for a service, you let them know your music preferences, and they create a virtual "radio station" that plays the songs you probably want to hear. But that just doesn't compare with going to a physical record store, buying

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Communications | Sports & Entertainment

Analytics | Data Visualization | Programming Tips

Euclidean and L1 distances between observations and a target value for standardized data

Rick WicklinMarch 28, 2018 0

Find the distances between observations and a target value

Suppose you want to find observations in multivariate data that are closest to a numerical target value. For example, for the students in the Sashelp.Class data set, you might want to find the students whose (Age, Height, Weight) values are closest to the triplet (13, 62, 100). The way to

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Data Visualization | Programming Tips

Robert AllisonMarch 26, 2018 0

Avoiding rush hour traffic!

As the Research Triangle Park becomes more popular, we're getting a lot more traffic on the roads. And with flexible work hours, of course I try to pick a time to drive to work when there's less traffic. I recently saw a cool infographic showing the most popular times when

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Data Management | Learn SAS | Programming Tips

Mastering the SAS DS2 Procedure second edition - the DS to DS2 Procedure

SAS JediMarch 26, 2018 0

Jedi SAS Tricks: The DSTODS2 Procedure

You have the infrastructure, and you know that DATA step would run so much better in DS2, but it’s complicated and you don’t know how to get started. Well, if you have SAS 9.4M5, rejoice! The DStoDS2 procedure is here, and it’s a humdinger! (No, Chris, not a Hemedinger… ;-) It's

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Data Visualization | Programming Tips

Chevell ParkerMarch 21, 2018 0

The many faces of HTML

Generating HTML output might be something that you do daily. After all, HTML is now the default format for Display Manager SAS output, and it is one of the available formats for SAS® Enterprise Guide®. In addition, SAS® Studio generates HTML 5.0 output as a default. The many faces of

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Advanced Analytics | Programming Tips

GastbeitragMarch 20, 2018 0

Web-Applikationen in SAS erstellen – ein Leichtes mit Handsontable und H54s-Adapter

Wie kann ich einem Mitarbeiter die unkomplizierte Anzeige und Bearbeitung von SAS Daten im Web-Browser ermöglichen? Diese Frage hat sich das SAS Expertenteam der mayato GmbH gestellt und den Lösungsweg in einem Whitepaper veröffentlicht. Das Whitepaper zeigt, wie mit SAS 9.4, HTML5 und JavaScript eine interaktive Web-Applikation erstellt werden kann.

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Learn SAS | Programming Tips

Rick WicklinMarch 19, 2018 0

Compute with combinations: Maximize a function over combinations of variables

About once a month I see a question on the SAS Support Communities that involves what I like to call "computations with combinations." A typical question asks how to find k values (from a set of p values) that maximize or minimize some function, such as "I have 5 variables,

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Data Management | Data Visualization | Programming Tips

Mary Kathryn QueenMarch 16, 2018 0

SAS Data Studio Code Transform (Part 1)

SAS Data Studio is a new application in SAS Viya 3.3 that provides a mechanism for performing simple, self-service data preparation tasks to prepare data for use in SAS Visual Analytics or other applications. It is accessed via the Prepare Data menu item or tile on SAS Home. Note: A

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Analytics | Programming Tips

Rick WicklinMarch 7, 2018 0

Fit a distribution from quantiles

Data analysts often fit a probability distribution to data. When you have access to the data, a common technique is to use maximum likelihood estimation (MLE) to compute the parameters of a distribution that are "most likely" to have produced the observed data. However, how can you fit a distribution

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Data Visualization | Programming Tips | SAS Events

Robert AllisonMarch 6, 2018 0

What to do in Denver, during SAS Global Forum!

Are you going to Denver, Colorado, and wondering what fun/interesting/eclectic things you can do there? Then this is the map for you! For the past couple of years, I've made maps of the city SAS Global Forum is in, pointing out some of the attractions that conference attendees might want

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Retail | Sports & Entertainment | Travel

Data Visualization | Programming Tips

Warren F. KuhfeldMarch 6, 2018 0

Getting started with SGPLOT - Part 12 - Loess Plot

The LOESS statement in PROC SGPLOT finds a fit function while making no assumptions about the parametric form of the regression function.

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Learn SAS | Programming Tips

Jeanne (Hyunjin) ByunMarch 6, 2018 0

[프로그래밍 팁] SAS 유니버시티 에디션으로 파이썬 코딩하기

‘국영수코(co)’라는 신조어 들어보셨나요? 국어, 영어, 수학, 코딩(coding)의 약자인데요. 교육부의 ‘2015 개정교육과정’에 따라 올해 3월부터 중학생, 내년부터는 초등학교 5, 6학년 학생의 소프트웨어(SW) 교육이 의무화되면서 코딩 교육과 관련 자격증 열풍이 불고 있습니다. 미국, 영국 등 IT 선진국들은 이미 발 빠르게 코딩 교육을 의무화하며, 4차 산업혁명 시대의 인재 확보에 나섰는데요. SAS 역시 2014년, 학습이나 비상업적인

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Data Visualization | Programming Tips

Robert AllisonMarch 5, 2018 0

Converting your old SAS jobs to use the new GfK maps

Do you procrastinate and find excuses to delay doing certain things, even when you know they really ought to be done? And you probably realize that starting those projects is usually the hardest part, eh? Well, I finally started converting hundreds of my SAS examples to use the new GfK maps,

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Analytics | Programming Tips

The saddle point of a matrix

Rick WicklinMarch 5, 2018 0

The probability of a saddle point in a matrix

Many people know that a surface can contain a saddle point, but did you know that you can define the saddle point of a matrix? Saddle points in matrices are somewhat rare, which means that if you choose a random matrix you are unlikely to choose one that has a

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Data Visualization | Learn SAS | Programming Tips

Sanjay MatangeMarch 2, 2018 0

Series plot with varying attributes

This article is motivated by a recent question on the SAS Communities board. This user wants to create a series or spline plot where the attributes of the line (color, thickness) can be changed based on another variable. In this case it may be a binary variable with "0" and

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