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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 AllisonDecember 5, 2017 0

What fuel is 1000 times dirtier than diesel?

I recently read an interesting article about petroleum coke (petcoke). A lot of it is produced in the US, and lately a lot of it is consumed (burned) in India ... contributing to air pollution there. The article mentioned some numbers in the text, but the data was really begging to

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Energy & Utilities | Manufacturing

Data Visualization | Learn SAS | Programming Tips

Sanjay MatangeDecember 4, 2017 0

Little things go a long way

In my previous post, I described a new options to control the widths of the caps for Whiskers, Error and Limit bars. This topic could have been titled "Little things go a long way", as such details really make for a good graph. In a similar manner, another detail issue

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Banking | Energy & Utilities | Government | Health Care | Insurance | Life Sciences | Manufacturing

Programming Tips

Chris Hemedinger

Chris HemedingerDecember 4, 2017 0

How to scrape data from a web page using SAS

The internet is rich with data, and much of that data seems to exist only on web pages, which -- for some crazy reason -- are designed for humans to read. When students/researchers want to apply data science techniques to analyze collect and analyze that data, they often turn to

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Learn SAS | Programming Tips

Jerry LeonardDecember 4, 2017 0

Controlling your formats

During my 35 years of using SAS® software, I have found the CNTLIN and CNTLOUT options in the FORMAT procedure to be among the most useful features that I routinely suggest to other SAS users. The CNTLIN option enables you to create user-defined formats from a SAS data set (input

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Programming Tips

Rick WicklinDecember 4, 2017 0

Mean imputation in SAS

Imputing missing data is the act of replacing missing data by nonmissing values. Mean imputation replaces missing data in a numerical variable by the mean value of the nonmissing values. This article shows how to perform mean imputation in SAS. It also presents three statistical drawbacks of mean imputation. How

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Analytics | Data Visualization | Programming Tips

Robert AllisonNovember 30, 2017 0

Let's analyze Trump's tweets

Since Trump became the US president, many people have noticed that he posts a lot of tweets. While some people choose to analyze and critique the content of those tweets, I was more curious about something a little less controversial - the timing and frequency. Follow along as I dig into

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Communications | Government

Analytics | Data Visualization | Programming Tips

Robert AllisonNovember 29, 2017 0

When and where have they legalized 'it'?

Whether or not to legalize marijuana is a hotly debated topic these days. And no matter which side of the debate you're on, I think you will be interested in seeing several ways to visualize which states have legalized marijuana, and when ... Their Version Here's the original graph that

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Government | Health Care | Retail | Sports & Entertainment | Travel

Data Visualization | Programming Tips

Rick WicklinNovember 29, 2017 0

Visualize patterns of missing values

Missing values present challenges for the statistical analyst and data scientist. Many modeling techniques (such as regression) exclude observations that contain missing values, which can reduce the sample size and reduce the power of a statistical analysis. Before you try to deal with missing values in an analysis (for example,

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Advanced Analytics | Programming Tips

Juthika KharghariaNovember 28, 2017 0

Interacting with the results of PROC CAS

The CAS procedure (PROC CAS) enables us to interact with SAS Cloud Analytic Services (CAS) from the SAS client based on the CASL (the scripting language of CAS) specification. CASL supports a variety of data types including INT, DOUBLE, STRING, TABLE, LIST, BLOB, and others. The result of a CAS

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Data Visualization | Learn SAS | Programming Tips

Sanjay MatangeNovember 27, 2017 0

Customizing cap widths

The SG procedures and GTL statements do a lot of work for us to display the data using the specified statements. This includes setting many details such as arrow heads, line patterns etc, including caps. Often, such details have a fixed design according to what seems reasonable for most use

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Banking | Government | Health Care | Insurance | Life Sciences | Manufacturing

Analytics | Data Visualization | Programming Tips

Robert AllisonNovember 27, 2017 0

What's the most likely location for Amazon's HQ2?

The most highly anticipated business announcement this fall is probably the location for Amazon's second headquarters (dubbed HQ2). Amazon plans to spend $5 billion on their HQ2, and employ about 50,000 people in high-tech jobs. They received 238 proposals before their October 19 deadline, but haven't announced a winner yet.

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Programming Tips

Histogram of data overlaid with a beta density curve, fitted by maximum likelihood estimation

Rick WicklinNovember 27, 2017 0

The method of moments: A smart way to choose initial parameters for MLE

When you run an optimization, it is often not clear how to provide the optimization algorithm with an initial guess for the parameters. A good guess converges quickly to the optimal solution whereas a bad guess might diverge or require many iterations to converge. Many people use a default value

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Analytics | Data Visualization | Programming Tips

Robert AllisonNovember 22, 2017 0

Analysis of Thanksgiving side dish popularity

If you're preparing a big Thanksgiving dinner, then you don't want to leave out the most popular side dish, do you?!? But what is the most popular side dish? ... If you don't already know, then perhaps some data & analytics can help! But before we get started, here's a

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Sports & Entertainment

Data Visualization | Learn SAS | Programming Tips

SAS KoreaNovember 22, 2017 0

[SAS 프로그래밍 팁] ODS 템플릿 수정 기법

이 기사는 SAS Korea가 번역 및 편집했으며 원래 Rick Wicklin이 썼습니다. 원문이 여기에 있습니다. 이번 블로그를 통해 ODS 템플릿을 효율적으로 수정할 수 있는 SAS 프로그래밍 기법, 일명 ‘커펠드 템플릿 수정 기법(Kuhfeld’s Template Modification Technique; TMT)’을 소개하고자 합니다. 다섯 단계만 거치면 20줄 미만의 SAS 코드만으로 이 기법을 구현할 수 있는데요. 방법은 간단하지만

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Programming Tips

Beta-binomial cumulative distribution

Rick WicklinNovember 22, 2017 0

Compute the CDF and quantiles of discrete distributions

A statistical programmer read my article about the beta-binomial distribution and wanted to know how to compute the cumulative distribution (CDF) and the quantile function for this distribution. In general, if you know the PDF for a discrete distribution, you can also compute the CDF and quantile functions. This article

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Programming Tips

Chris Hemedinger

Chris HemedingerNovember 21, 2017 0

Computing a date from the past (or future) with SAS

Social media has brought anniversary dates to the forefront. Every day, my view of Google Photos or Facebook shows me a collection of photos from exactly some number of years ago to remind me of how good things were back then. These apps are performing the simplest of date-based math

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Analytics | Data Visualization | Programming Tips

Robert AllisonNovember 21, 2017 0

How a data guy cooks a Thanksgiving dinner!

Here in the US, we're preparing to celebrate the Thanksgiving holiday. Therefore this Thursday most families in the US will be having a big turkey dinner. Although I'm a bachelor guy and eat out all the time, I'm actually a pretty good cook - and I'd like to share with

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Retail | Sports & Entertainment

Advanced Analytics | Programming Tips

Steven SoberNovember 20, 2017 0

How to Emulate PROC APPEND in CAS

SAS Viya provides a robust, scalable, cloud-ready, distributed runtime engine. This engine is driven by CAS (Cloud Analytic Services), providing fast processing for many data management techniques that run distributive, i.e. using all threads on all defined compute nodes. Note: SAS Viya 3.5+ now supports the data set option APPEND=YES.

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Analytics | Programming Tips

Beta-binomial distribution and expected values in SAS

Rick WicklinNovember 20, 2017 0

Simulate data from the beta-binomial distribution in SAS

This article shows how to simulate beta-binomial data in SAS and how to compute the density function (PDF). The beta-binomial distribution is a discrete compound distribution. The "binomial" part of the name means that the discrete random variable X follows a binomial distribution with parameters N (number of trials) and

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Analytics | Programming Tips

Robert AllisonNovember 17, 2017 0

Does your dashboard measure up?

Information Dashboards were the hot topic a few years ago, but the hype seems to have died down lately. A good dashboard is still a very useful way to summarize, analyze, and share data - so I thought I'd re-visit the topic, and try to improve an old dashboard. Did

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Manufacturing | Retail

Data Visualization | Programming Tips

Jane EslingerNovember 17, 2017 0

The ODS Destination for PowerPoint Has a New Option

Have you heard? The ODS Destination for PowerPoint Has a New Option It’s true. The ODS destination for PowerPoint now has the STARTPAGE= option, which provides you with greater control and flexibility when creating presentations. Added to the ODS POWERPOINT statement in SAS® 9.4TS1M4, the STARTPAGE= option enables you to

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Data Visualization | Programming Tips

Warren F. KuhfeldNovember 17, 2017 0

Advanced ODS Graphics: A deeper dive into item stores

We'll take a deeper dive into understanding item stores--the files in which compiled templates are stored--and ways in which you can access them. At the end, I will show you one of my new examples: displaying percentages in the Kaplan-Meier failure plot.

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Learn SAS | Programming Tips

Rick WicklinNovember 15, 2017 0

Catch run-time errors in SAS/IML programs

Did you know that a SAS/IML function can recover from a run-time error? You can specify how to handle run-time errors by using a programming technique that is similar to the modern "try-catch" technique, although the SAS/IML technique is an older implementation. Preventing errors versus handling errors In general, SAS/IML

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Data Visualization | Learn SAS | Programming Tips

Sanjay MatangeNovember 14, 2017 0

Spark table

In the previous post, I discussed creating a 2D grid of spark lines by Year and Claim Type. This graph was presented in the SESUG conference held last week on SAS campus in the paper ""Methods for creating Sparklines using SAS" by Rick Andrews. This grid of sparklines was actually the

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Banking | Communications | Energy & Utilities | Health Care | Insurance | Life Sciences | Manufacturing

Programming Tips

The PAUSE statement as a debugging tool in SAS/IML Studio

Rick WicklinNovember 13, 2017 0

A tip for debugging SAS/IML modules: The PAUSE statement

Debugging is the bane of every programmer. SAS supports a DATA step debugger, but that debugger can't be used for debugging SAS/IML programs. In lieu of a formal debugger, many SAS/IML programmers resort to inserting multiple PRINT statements into a function definition. However, there is an easier way to query

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Learn SAS | Programming Tips

Jim SimonNovember 10, 2017 0

Simple Proc Print trick for grouped data

Here's a Proc Print trick for grouped data. Suppose your data is divided into groups, such as males and females. You could sort by the grouping variable before printing, like this: Suppose you want to better emphasize the groups. You could add a BY statement, like this: OK, but, personally,

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Data Visualization | Learn SAS | Programming Tips

Sanjay MatangeNovember 10, 2017 0

Spark grid

The 25th annual SESUG conference was held at in the SAS campus this week. I had the opportunity to meet and chat with many users and attend many excellent presentations. I will write about those that stood out (graphically) in my view. One excellent presentation was on "Methods for creating

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Banking | Energy & Utilities | Government | Health Care | Insurance | Life Sciences | Manufacturing | Retail

Analytics | Data Visualization | Programming Tips

Robert AllisonNovember 10, 2017 0

When are the fall leaves at their peak?

One of the great things about living in an area that has seasons is you get to see the leaves change colors in the fall. If you're a big fan of seeing the leaves at their peak, you could actually travel around the country and see the leaves at their

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Data for Good | Data Visualization | Programming Tips

Robert AllisonNovember 9, 2017 0

Graphing mistakes to avoid ... like the plague!

I recently saw an alarming article on social media about an outbreak of airborne plague spreading from Madagascar to Africa (and potentially to the rest of the world). The plague?!? - I thought that only happened hundreds of years ago?!? I don't really trust news on Facebook, so I went

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Data Visualization | Learn SAS | Programming Tips

Sanjay MatangeNovember 8, 2017 0

Long category values

The South East SAS Users Group meeting wound up yesterday. The 25th anniversary conference was held on SAS Campus and it provided a great opportunity to meet with many enthusiastic SAS users and attend many informative presentations. More on this in a follow-up article. During one of these presentations, Mary

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Communications | Health Care | Hospitality | Life Sciences | Sports & Entertainment | Travel

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