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Programming Tips

Strengthen your programming skills with tips and techniques from the experts

Analytics | Data Visualization | Programming Tips

Robert AllisonFebruary 2, 2018 0

Can felons vote in your state?

Can felons vote? This seemed like a simple question, but I realized that I wasn't 100% sure of the answer. Therefore I looked into the data ... and apparently "it depends". Follow along and see how I created a map to help answer this question. But before we take the

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Analytics | Data for Good | Data Visualization | Programming Tips

Robert AllisonJanuary 30, 2018 0

Building a better flu map!

The flu seems to be especially potent this year. "How potent is it," you might ask? ... Well, let's plot some data on a map to help find out! Here in the US, the Centers for Disease Control and Prevention (CDC) compiles data about diseases, and provides reports and graphs

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Analytics | Data for Good | Data Visualization | Programming Tips

Robert AllisonJanuary 29, 2018 0

A better way to view flu data

Have you, or someone you know, gotten the flu this year? Word on the street is that this year's flu might be particularly bad, and the data seem to be corroborating that so far. You don't want to take my word for it? -- well then, let's have a look

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Learn SAS | Programming Tips

How to generate random numbers in SAS

Rick WicklinJanuary 29, 2018 0

How to use the new random-number generators in SAS

What is a random number generator? What are the random-number generators in SAS, and how can you use them to generate random numbers from probability distributions? In SAS 9.4M5, you can use the STREAMINIT function to select from eight random-number generators (RNGs), including five new RNGs. After choosing an RNG,

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Data Visualization | Programming Tips

Daria Rostovtseva

Daria RostovtsevaJanuary 26, 2018 0

How to create custom regional maps in SAS Visual Analytics 8.2

Are you interested in using SAS Visual Analytics 8.2 to visualize a state by regions, but all you have is a county shapefile? As long as you can cross-walk counties to regions, this is easier to do than you might think. Here are the steps involved: Step 1 Obtain a

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Learn SAS | Programming Tips

Leonid BatkhanJanuary 25, 2018 0

Let SAS write batch scripts for you

If Necessity is the mother of Invention, then, perhaps, the father of Automation is Laziness. Automation is all about convenience, comfort, and productivity. Why do it yourself if you can devise something to do it for you! In my previous post Running SAS programs in batch under Unix/Linux, we learned

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Analytics | Data Visualization | Programming Tips

Robert AllisonJanuary 25, 2018 0

North Korea's 117 missile tests

Data doesn't always have to be 'big data' to be interesting. For example, I recently ran across a small, but very interesting, database containing all of North Korea's missile tests. The data was a bit difficult to digest in the formats provided, therefore I decided to try my hand at

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Advanced Analytics | Programming Tips

Patricia NeriJanuary 24, 2018 0

Solving Sudoku puzzles using Constraint Programming in SAS Optimization

Most people who work with optimization are familiar with Linear and Integer Programming, to their toolkit they could add Constraint Programming. Constraint Programming is a powerful technique that is used to solve powerful “real-world” problems in a variety of areas, such as, planning, scheduling, DNA Sequencing, computer graphics and natural

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Advanced Analytics | Programming Tips

Phil WeissJanuary 24, 2018 0

Getting your SAS 9 code to run multi-threaded in SAS Viya 3.3

This article and accompanying technical white paper are written to help SAS 9 users process existing SAS 9 code multi-threaded in SAS Viya 3.3. Read the full paper, Getting Your SAS 9 Code to Run Multi-Threaded in SAS Viya 3.3. The Future is Multi-threaded Processing Using SAS® Viya® When I first began

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Programming Tips

Rick WicklinJanuary 24, 2018 0

Use lists to pass parameters to SAS/IML functions

A popular way to use lists in the SAS/IML language is to pack together several related matrices into a single data structure that can be passed to a function. Imagine that you have written an algorithm that requires a dozen different parameters. Historically, you would have to pass those parameters

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Programming Tips

Chris Hemedinger

Chris HemedingerJanuary 23, 2018 0

How to test PROC HTTP and the JSON library engine

Using SAS with REST APIs is fun and rewarding, but it's also complicated. When you're dealing with web services, credentials, data parsing and security, there are a lot of things that can go wrong. It's useful to have a simple program that verifies that the "basic plumbing" is working before

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Programming Tips

Chris Hemedinger

Chris HemedingerJanuary 22, 2018 0

A Valentine challenge: express your <3 with SAS

Is it time to add SAS to the list of "romance" languages?*. It's no secret that there are enthusiastic SAS programmers who love the SAS language. So it only makes sense that sometimes, these programmers will "nerd out" and express their adoration for fellow humans by using the code that

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Analytics | Data Visualization | Programming Tips

Robert AllisonJanuary 22, 2018 0

Here are the Amazon HQ2 finalists!

Amazon recently announced the 20 finalists in their search for a location to house their new 2nd headquarters (nicknamed 'hq2'). They showed a map on their web page, but I wanted to create my own map, with a few improvements ... Here's their official map. It's not terrible, but it

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Programming Tips

Rick WicklinJanuary 22, 2018 0

Create lists by using a natural syntax in SAS/IML

SAS/IML 14.3 (SAS 9.4M5) introduced a new syntax for creating lists and for assigning and extracting item in a list. Lists (introduced in SAS/IML 14.2) are data structures that are convenient for holding heterogeneous data. A single list can hold character matrices, numeric matrices, scalar values, and other lists, as

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Data Visualization | Programming Tips

Sue MorrisonJanuary 19, 2018 0

Common annotate pitfalls and how to avoid them

The SAS/GRAPH® Annotate Facility is often viewed as a mysterious programming abyss that many SAS users do not wish to dive into, in part because of some not-so-obvious pitfalls that they might experience when using it. I view annotation as a frequently misunderstood and needlessly feared but powerful tool that

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Data Visualization | Programming Tips

Warren F. KuhfeldJanuary 19, 2018 0

Advanced ODS Graphics: DRAW statements (part 2)

This post provides examples of DRAW statement syntax and links to the documentation.

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Analytics | Data Visualization | Programming Tips

Robert AllisonJanuary 19, 2018 0

Polishing up your Bitcoins!

With all the talk about Bitcoin in the news lately, I decided it was time I created a Bitcoin graph! Follow along as I track down the data, create a graph, and then polish up that graph to make it shine. But before we get started, here's a little example

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Analytics | Data Visualization | Programming Tips

Robert AllisonJanuary 17, 2018 0

Shedding some light on the lottery!

Have you ever played the lottery? Have you ever heard people bragging about all the money they've won? Does it make you want to play? ... We've had an Education Lottery here in North Carolina for over 10 years, but I still didn't really know much about it - therefore I

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Banking | Education | Government | Retail | Sports & Entertainment

Programming Tips

Chris Hemedinger

Chris HemedingerJanuary 16, 2018 0

How to secure your REST API credentials in SAS programs

I've used SAS with a bunch of different REST APIs: GitHub, Brightcove, Google Analytics, Lithium, LinkedIn, and more. For most of these I have to send user/password or "secret" application tokens to the web service so that it knows who I am and what data I can retrieve. I do

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Data Visualization | Programming Tips

Warren F. KuhfeldJanuary 15, 2018 0

Advanced ODS Graphics: DRAW statements (part 1)

DRAW statements provide to GTL what SG annotation provides to the SG procedures--a way to add text, shapes, lines, and arrows to graphs.

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Learn SAS | Programming Tips

Lora D. DelwicheJanuary 15, 2018 0

SAS Enterprise Guide tools for programmers

If you are a SAS programmer, you may wonder why you should read this. After all isn’t SAS Enterprise Guide just for folks who don’t want to be bothered writing SAS code? SAS Enterprise Guide is just point, click, and get results, right? Well there is a lot more to

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Analytics | Programming Tips

Rick WicklinJanuary 15, 2018 0

Data unavailable? Use the "eyeball distribution" to simulate

Last week I got the following message: Dear Rick: How can I create a normal distribution within a specified range (min and max)? I need to simulate a normal distribution that fits within a specified range. I realize that a normal distribution is by definition infinite... Are there any alternatives,

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Programming Tips

Chris Hemedinger

Chris HemedingerJanuary 11, 2018 0

How to list your mapped drives in a SAS program

If you work in a team environment, you might be accustomed to using mapped network drives for source data folders or to publish results. If you've recently moved to a SAS server environment, you might not have those mapped drives available. How can you tell? This question was posted on

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Data Visualization | Learn SAS | Programming Tips

Sanjay MatangeJanuary 11, 2018 0

A 3D waterfall chart

A few months ago, a user inquired about a chart that showed tumor response and treatment duration for each subject on 2 different planes of a 3D view. The data was really 2D, with one independent variable (the subject id) and two or more response values. I had provided an

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Health Care | Life Sciences

Analytics | Programming Tips

Chevell ParkerJanuary 10, 2018 0

How to code in Python with SAS 9.4

The SAS® platform is now open to be accessed from open-source clients such as Python, Lua, Java, the R language, and REST APIs to leverage the capabilities of SAS® Viya® products and solutions. You can analyze your data in a cloud-enabled environment that handles large amounts of data in a

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Learn SAS | Programming Tips

Rick WicklinJanuary 10, 2018 0

10 posts from 2017 that deserve a second look

Last week I wrote about the 10 most popular articles from The DO Loop in 2017. My most popular articles tend to be about elementary statistics or SAS programming tips. Less popular are the articles about advanced statistical and programming techniques. However, these technical articles fill an important niche. Not

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Data Visualization | Programming Tips

Warren F. KuhfeldJanuary 9, 2018 0

What you need to know about the graph template and data object in PROC SGPLOT

PROC SGPLOT looks at the PROC statements, it looks at the data, and it writes a template that might depend on the data. If you want to understand how the graph is created, you need to look at the PROC SGPLOT code, the graph template and data objects that it constructs, and the final graph.

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Analytics | Data Visualization | Programming Tips

Robert AllisonJanuary 9, 2018 0

Price of marijuana, across the US

As marijuana has become legal in several states, it's been a frequent topic of interest in the news. And as with any interesting topic, I like to find useful ways to visually analyze the data. In this case, let's have a look at the price of marijuana, and how it

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Sports & Entertainment | Travel

Data Visualization | Programming Tips

Warren F. KuhfeldJanuary 8, 2018 0

Displaying a grouped regression fit plot along with the parameter estimates

Usually, you use axis tables when there is a clear link between the rows of the axis table and the graph. I'll show how to use an axis table to create a table that is independent of the graph. This post also uses discrete attribute maps.

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Analytics | Data Visualization | Programming Tips

Robert AllisonJanuary 8, 2018 0

Which US states require an ID to vote?

The first time I voted (back in the 1980s), I was very surprised that I didn't have to show any kind of identification. I assumed it was because I lived in a small North Carolina town of 300 people where "everybody knew everybody" ... but they told me that nobody

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