Blogs

Blogs

Data Visualization

Get the right information, with visual impact, to the people who need it

Data for Good | Data Visualization

Robert AllisonFebruary 3, 2020 0

Improving the Wuhan Coronavirus dashboard

The COVID-19 Coronavirus outbreak has been in the news a lot lately, and everyone is probably looking for a quick/easy way to see the data. The best visualization I've seen so far is this dashboard by Johns Hopkins. Here's a screen-capture: But before we dive into the data analysis, let's

Read More

Advanced Analytics | Artificial Intelligence | Data Visualization | Internet of Things

Charlie ChaseFebruary 3, 2020 0

How analytics takes wine from grape to grocery

Almost everyone enjoys a good glass of wine after a long day, but did you ever stop to wonder how the exact bottle you're looking for makes its way to the grocery store shelf? Analytics has a lot to do with it, as SAS demonstrated to attendees at the National

Read More

Manufacturing | Retail

Data Visualization | Programming Tips

Robert AllisonJanuary 31, 2020 0

Magnetic north moved 50 miles last year (let's map it!)

I've read several articles that mentioned the north magnetic pole has been moving more in the past few decades, than in the previous few hundred years. And as a Map Guy, I knew I just had to plot this data on a map, and see it for myself! I provide

Read More

Analytics | Data Visualization | Programming Tips

Rick WicklinJanuary 27, 2020 0

The Johnson SU distribution

The Johnson system (Johnson, 1949) contains a family of four distributions: the normal distribution, the lognormal distribution, the SB distribution (which models bounded distributions), and the SU distribution (which models unbounded distributions). Note that 'B' stands for 'bounded' and 'U' stands for 'unbounded.' A previous article explains the purpose of

Read More

Data for Good | Data Visualization | Programming Tips

Robert AllisonJanuary 24, 2020 0

Creating a map to track the coronavirus

The coronavirus has been a big item in the news lately - it's a pneumonia-like illness that has killed several people. It's thought to have started in China, and has spread to several other countries (including at least one case in the U.S.). The World Health Organization says the coronavirus

Read More

Data for Good | Data Visualization | Programming Tips

Robert AllisonJanuary 23, 2020 0

How to prepare (your graphs) for flu season

The flu season has started here in the U.S., and according to the Centers for Disease Control and Prevention (CDC) data it has caused 214 deaths in the first week of 2020. Is this number higher, or lower, than usual? When does the flu season start, and how long does

Read More

Analytics | Data Visualization

Datos analítica

Ivan Fernando Herrera

Ivan Fernando HerreraJanuary 22, 2020 0

Visualizando los datos de manera más efectiva e inteligente

Cuando hablamos de convertir datos en inteligencia no solamente estamos haciendo referencia a obtener de ellos conocimiento para tomar las mejores decisiones. También se trata de tener formas de comunicación mucho más efectivas e impactantes a través de capacidades avanzadas de visualización, para lograr que el conocimiento sea realmente usado

Read More

Banking | Communications | Education | Government | Health Care | Insurance | Manufacturing | Retail

Analytics | Data Visualization | Programming Tips

Rick WicklinJanuary 20, 2020 0

The Johnson SB distribution

From the early days of probability and statistics, researchers have tried to organize and categorize parametric probability distributions. For example, Pearson (1895, 1901, and 1916) developed a system of seven distributions, which was later called the Pearson system. The main idea behind a "system" of distributions is that for each

Read More

Customer Intelligence | Data Visualization

Andrew ChristianJanuary 15, 2020 0

How to utilize Customer Lifetime Value with SAS Visual Analytics

Some business models will segment the worth of their customers into categories that will often give different levels of service to the more “higher worth” customers. The metric most often used for that is called Customer Lifetime Value (CLV). CLV is simply a balance sheet look at the total cost spent versus the total revenue earned over a customer’s projected tenure or “life.”

Read More

Data Visualization | Programming Tips

Robert AllisonJanuary 15, 2020 0

Where's the best place to retire, in the U.S.?

As I get older, a few of my buddies are starting to retire. And this makes me think about my own retirement (not that I'm anywhere near old enough to retire, mind you!) Therefore when I saw a list of the "Best & Worst Cities for Retiring" it caught my

Read More

Advanced Analytics | Data Visualization

simplified moment-ratio diagram in SAS

Rick WicklinJanuary 15, 2020 0

The moment-ratio diagram

In my book Simulating Data with SAS, I show how to use a graphical tool, called the moment-ratio diagram, to characterize and compare continuous probability distributions based on their skewness and kurtosis (Wicklin, 2013, Chapter 16). The idea behind the moment-ratio diagram is that skewness and kurtosis are essential for

Read More

Analytics | Data Visualization | Machine Learning

Rick WicklinJanuary 13, 2020 0

10 posts from 2019 that deserve a second look

Did you add "learn something new" to your list of New Year's resolutions? Last week, I wrote about the most popular articles from The DO Loop in 2019. The most popular articles are about elementary topics in SAS programming or univariate statistics because those topics have broad appeal. Advanced topics

Read More

Data Visualization | Programming Tips

Robert AllisonJanuary 7, 2020 0

Are winters colder in North Carolina, or Canada?

If someone proposes a bet to you, then you should be suspicious that they already know they're going to win. And one frequent topic of such bets is the weather... What if I bet you there's a city in Canada with a warmer average January temperature than Raleigh, NC? You

Read More

Data Visualization | Learn SAS | Programming Tips

Rick WicklinJanuary 6, 2020 0

Top posts from The DO Loop in 2019

Last year, I wrote more than 100 posts for The DO Loop blog. The most popular articles were about SAS programming tips for data analysis, statistical analysis, and data visualization. Here are the most popular articles from 2019 in each category. SAS programming tips Create training, testing, and validation data

Read More

Data Visualization | Programming Tips

Robert AllisonDecember 23, 2019 0

What restaurant is always open on holidays? - Waffle House!

Do you find yourself on the road during the holidays, and looking for a place to eat that's still open? Or perhaps you're like me - I don't cook at home, and I'm not really into visiting family for the holidays and eating with them. Well then, you probably know

Read More

Data Visualization | Programming Tips

Robert AllisonDecember 19, 2019 0

Cracking the code, of the Star Wars timeline!

The Rise of Skywalker, the final movie in the third set of the three Star Wars trilogies, will finally be released tomorrow (December 20, 2019). That's 9 movies, in about 42 years. And, if the first movies aren't still fresh in your mind (or perhaps you weren't even born when

Read More

Sports & Entertainment

Analytics | Data Visualization

Alison BolenDecember 18, 2019 0

Our top 10 data visualizations of 2019

From sports and health data to environmental and policy data, our data visualization experts have used SAS technologies to explore and present analyses on hundreds of topics throughout the year. We've selected some of the best in this end-of-year roundup to showcase their skills and SAS technologies, and to demonstrate

Read More

Energy & Utilities | Government | Sports & Entertainment

Analytics | Data Visualization

Rick WicklinDecember 18, 2019 0

Create a conditional quantile bin plot in SAS

A 2-D "bin plot" counts the number of observations in each cell in a regular 2-D grid. The 2-D bin plot is essentially a 2-D version of a histogram: it provides an estimate for the density of a 2-D distribution. As I discuss in the article, "The essential guide to

Read More

Data Visualization | Programming Tips

Robert AllisonDecember 12, 2019 0

What areas in NC have growing/shrinking population?

I can tell that my area (Wake county, NC) has a growing population, because the traffic keeps getting worse and worse. But it's a little difficult to quantitatively gauge growth by looking at traffic congestion. Therefore let's have a look at a more direct measurement - the actual population data!

Read More

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

Read More

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.

Read More

Data Visualization | Learn SAS

Rick WicklinDecember 9, 2019 0

Visualize data before and after a treatment

Recently I showed how to visualize and analyze longitudinal data in which subjects are measured at multiple time points. A very common situation is that the data are collected at two time points. For example, in medicine it is very common to measure some quantity (blood pressure, cholesterol, white-blood cell

Read More

Analytics | Data Visualization

Rick WicklinDecember 5, 2019 0

Longitudinal data: The mixed model

This is a second article about analyzing longitudinal data, which features measurements that are repeatedly taken on subjects at several points in time. The previous article discusses a response-profile analysis, which uses an ANOVA method to determine differences between the means of an experimental group and a placebo group. The

Read More

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

Read More

Analytics | Data Visualization

Rick WicklinNovember 27, 2019 0

Evaluate a function on a linear subspace

This article discusses how to restrict a multivariate function to a linear subspace. This is a useful technique in many situations, including visualizing an objective function that is constrained by linear equalities. For example, the graph to the right is from a previous article about how to evaluate quadratic polynomials.

Read More

Data Visualization

Robert AllisonNovember 25, 2019 0

Plotting NC's new congressional districts maps for 2020

North Carolina recently re-drew the congressional district boundaries for the upcoming 2020 election. Here's a copy of the new map, from the ncleg.gov website: A couple of years ago, I created an enhanced version of the 2016/18 map, and I thought I'd do the same for the new 2020 map...

Read More

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).

Read More

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,

Read More

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

Read More

Previous 1 … 8 9 10 11 12 … 60 Next