Data Visualization | Learn SAS

Rick WicklinFebruary 27, 2019 0

3 ways to create nested box plots in SAS

Box plots are a great way to compare the distributions of several subpopulations of your data. For example, box plots are often used in clinical studies to visualize the response of patients in various cohorts. This article describes three techniques to visualize responses when the cohorts have a nested or

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Analytics | Data Visualization | Learn SAS

Rick WicklinFebruary 25, 2019 0

Graphs of bootstrap statistics in PROC TTEST

When I run a bootstrap analysis, I create graphs to visualize the distribution of the bootstrap statistics. For example, in my article about how to bootstrap the difference of means in a two-sample t test, I included a histogram of the bootstrap distribution and added reference lines to indicate a

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Samantha GidlowFebruary 22, 2019 0

Thinking about getting SAS® certified? Check out the new SAS certification guide!

Find out about the new SAS Certified Specialist credential, and all the ways you can prepare for it.

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Data Visualization | Learn SAS | Programming Tips

Martin MinceyFebruary 15, 2019 0

Embed scalable graphics using the ODS HTML5 destination

Beginning with SAS® 9.4, you can embed graphics output within HTML output using the ODS HTML5 destination. This technique works with SAS/GRAPH® procedures (such as GPLOT and GCHART), SG procedures (such as SGPLOT and SGRENDER), and when you create graphics output with ODS Graphics enabled. Most (if not all) existing

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Mark StevensFebruary 13, 2019 0

New Performance-Based Certification: Write SAS Code During Your Exam

SAS has worked with our exam delivery partners to integrate a live lab into an exam, which can be delivered anywhere, anytime, on-demand.

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Analytics | Learn SAS | Programming Tips

Rick WicklinFebruary 13, 2019 0

3 ways to obtain the Hessian at the MLE solution for a regression model

When you use maximum likelihood estimation (MLE) to find the parameter estimates in a generalized linear regression model, the Hessian matrix at the optimal solution is very important. The Hessian matrix indicates the local shape of the log-likelihood surface near the optimal value. You can use the Hessian to estimate

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Sian RobertsFebruary 12, 2019 0

Isn’t SAS Romantic?

SAS Press gets in the Valentine's Day spirit.

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Analytics | Learn SAS

Rick WicklinFebruary 11, 2019 0

4 reasons to use PROC PLM for linear regression models in SAS

Have you ever run a regression model in SAS but later realize that you forgot to specify an important option or run some statistical test? Or maybe you intended to generate a graph that visualizes the model, but you forgot? Years ago, your only option was to modify your program

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Data Visualization | Learn SAS

Scott HicksFebruary 8, 2019 0

Fundamentals of SAS Visual Analytics geo maps

Creating a map with SAS Visual Analytics begins with the geographic variable. This blog post explains the first type of geography variable that VA supports: predefined. Future posts will cover the other two types of geography variables in VA: custom coordinates and custom polygons.

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Data Management | Learn SAS | Programming Tips

Leonid BatkhanFebruary 6, 2019 0

How to split a raw file or a data set into many external raw files

Recently, I worked on a cybersecurity project that entailed processing a staggering number of raw text files about web traffic. Millions of rows had to be read and parsed to extract variable values. The problem was complicated by the varying records composition. Each external raw file was a collection of

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K. Matthew WindhamFebruary 5, 2019 0

Webpage scraping made easy with PROC HTTP

SAS Press author Matt Windham shows you how to use the SAS procedure PROC HTTP to grab raw data from a website.

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Data Visualization | Learn SAS | Programming Tips

Kelly MillsFebruary 4, 2019 0

Use PROC GREMOVE and GREDUCE for Nice SGMAP Regions

In the previous Graphically Speaking blog for PROC SGMAP, you used PROC GPROJECT so map regions would match OpenStreetMap and Esri background images. This time, the same British Columbia shapefile is used with: PROC GREMOVE to remove unwanted boundary lines PROC GREDUCE to reduce map data PROC GPROJECT to zoom

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Learn SAS | Programming Tips

Rick WicklinJanuary 28, 2019 0

Simulate data for a regression model with categorical and continuous variables

This article shows how to use SAS to simulate data that fits a linear regression model that has categorical regressors (also called explanatory or CLASS variables). Simulating data is a useful skill for both researchers and statistical programmers. You can use simulation for answering research questions, but you can also

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Michelle HomesJanuary 24, 2019 0

SAS Press books changed my life story!

Michelle Homes explains how SAS Press books changed her life, and how she donates her books and time to the SAS community whenever she can.

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Suzanne MorgenJanuary 22, 2019 0

Secrets from a SAS Expert: An Interview with Leonid Batkhan

You’re probably already familiar with Leonid Batkhan from his popular blog right here on The Learning Post. In fact, he’s one of our most engaging authors, with thousands of views and hundreds of comments. Leonid is a true SAS Sensei. He has been at SAS for nearly 25 years and

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Learn SAS | Programming Tips

Kathryn McLawhornJanuary 18, 2019 0

Navigating SAS documentation to find out about new, modified, and updated features

Learn about the latest product features, changes and upgrade information in new sections of SAS product documentation for SAS® 9.4 and SAS® Viya®. SAS' Kathryn McLawhorn tells us all about them.

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Don HendersonJanuary 15, 2019 0

Four more tips about hash tables

Now is your chance to learn even more about SAS hash tables with four additional articles on the subject.

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Data Visualization | Learn SAS

Rick WicklinJanuary 14, 2019 0

How to align the Y and Y2 axes in PROC SGPLOT

When you overlay two series in PROC SGPLOT, you can either plot both series on the same axis or you can assign one series to the main axis (Y) and another to a secondary axis (Y2). If you use the Y and Y2 axes, they are scaled independently by default,

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Gerhard SvolbaJanuary 10, 2019 0

Favorite SAS Press books from a SAS Press author

Does this situation sound familiar? You have a complex analysis that must be finished urgently. The data was delivered late and its quality and structure are far from the expected standard. The time pressure to present the results is huge, and your SAS program is not giving you the expected

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Data Visualization | Learn SAS | Programming Tips

Kelly MillsJanuary 10, 2019 0

Use PROC GPROJECT to Project Choromap Regions Successfully in PROC SGMAP

Sometimes it is difficult to know what parameters to use when projecting map data onto Esri or OpenStreetMaps in PROC SGMAP. The shapefile .PRJ file contains everything you need to set these parameters in PROC GPROJECT. In a previous blog, you saw how to lookup projections at a web site,

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Data Management | Learn SAS | Programming Tips

Leonid BatkhanJanuary 9, 2019 0

Simplify data preparation using SAS data templates

My New Year's resolution: “Unclutter your life” and I hope this post will help you do the same. Here I share with you a data preparation approach and SAS coding technique that will significantly simplify, unclutter and streamline your SAS programming life by using data templates. Dictionary.com defines template as

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Learn SAS | Programming Tips

Rick WicklinJanuary 2, 2019 0

Top posts from The DO Loop in 2018

Last year, I wrote more than 100 posts for The DO Loop blog. Of these, the most popular articles were about data visualization, SAS programming tips, and statistical data analysis. Here are the most popular articles from 2018 in each category. Data Visualization Visualize repetition in song lyrics: In one

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Data Visualization | Learn SAS | Programming Tips

Sanjay MatangeDecember 20, 2018 0

A Graphical Journey

The ODS Graphics software, first released with SAS 9.2, supported creating graphs directly from statistical procedures.  Prior to this, very few statistical procedures created graphs on their own, and in most cases creating graphs was a post process or creating the graphs from the saved data using SAS/GRAPH procedures. With

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Banking | Communications | Energy & Utilities | Health Care | Manufacturing | Retail | Travel

Learn SAS | Students & Educators

Markus GrauDecember 19, 2018 0

Die eierlegende Wollmilchsau für datengetriebene Entscheidungen – es gibt sie!

Sie lebt in der Cloud und ist sehr genügsam. Als Allesfresser nimmt sie jegliche Art von Daten dankbar entgegen. Seien das nun strukturierte oder unstrukturierte Daten in allen Formen und Facetten … Sie ist einerseits mit sehr wenig zufrieden und holt das Bestmögliche aus wenigen Daten heraus, kann allerdings, wenn

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Sian RobertsDecember 18, 2018 0

The Model Gift – Transforming Data into Actionable Insights!

SAS for Mixed Models: Introduction to Basic Applications takes you step-by-step through the journey of creating models, enabling you to transform scores of data into actionable insights.

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Analytics | Data Management | Learn SAS | Machine Learning

Michael HerrmannDecember 17, 2018 0

DevOps & SAS: Entwicklung und Betrieb aus einer Hand?

K(o)ennen Sie schon „DevOps“? Machen Sie SAS? Dann lohnt sich eventuell ein frischer Blick auf die Kombination! Denn immer mehr Unternehmen probieren, ihren produktiven Betrieb auch in die Hände der Software-Entwickler zu legen (2 von 3 laut Jenkins) – speziell in der Analyse, insbesondere beim agilen Modellieren und dem Veredeln

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Analytics | Data Visualization | Learn SAS

Rick WicklinDecember 17, 2018 0

Create a probability plot in SAS

Many data analysts use a quantile-quantile plot (Q-Q plot) to graphically assess whether data can be modeled by a probability distribution such as the normal, lognormal, or gamma distribution. You can use the QQPLOT statement in PROC UNIVARIATE to create a Q-Q plot for about a dozen common distributions. However,

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Learn SAS | Programming Tips

Kim WilsonDecember 13, 2018 0

FAQs about SAS dates, arrays and managing local PC files

Every so often, SAS Technical Support highlights questions that come in on a regular basis. This is one of those times. Here Kim Wilson describes answers to questions covering SAS dates, arrays, and how to reference local PC files from SAS® Enterprise Guide® and SAS® Studio when those applications connect to a SAS® server in UNIX operating environments.

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Analytics | Learn SAS | Programming Tips

Rick WicklinDecember 12, 2018 0

The essential guide to bootstrapping in SAS

This article describes best practices and techniques that every data analyst should know before bootstrapping in SAS. The bootstrap method is a powerful statistical technique, but it can be a challenge to implement it efficiently. An inefficient bootstrap program can take hours to run, whereas a well-written program can give

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Data Visualization | Learn SAS | Programming Tips

Kelly MillsDecember 11, 2018 0

PROC SGMAP using CSV Files, GINSIDE and GEODIST to Plot Places of Interest

As mentioned in other PROC SGMAP blogs, several SAS/GRAPH procedures have been moved to 9.4M6 Base SAS to be used with PROC SGMAP. You can use these to create PROC SGMAP output even when using the free SAS University edition. In this blog you will use the: IMPORT procedure for

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