Blog Archives

SAS, SPSS, Stata Users: Learn R from Home June 17

May 8, 2013
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SAS, SPSS, Stata Users: Learn R from Home June 17

Has learning R been driving you a bit crazy? If so, it may be that you’re “lost in translation.” On June 17 and 19, I’ll be teaching a webinar, R for SAS, SPSS and Stata Users. With each R concept, … Continue reading →

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Knoxville R Users Group Formed, Free Training Offered

April 8, 2013
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Knoxville R Users Group Formed, Free Training Offered

R is popular free and open-source software for graphics and data analytics. The Knoxville R Users Group is being formed to help people learn R and improve their skills with it. Three departments of The University of Tennessee are working together … Continue reading →

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R Tackles Big Garbage

April 1, 2013
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R Tackles Big Garbage

April 1, 2013 – Although the capabilities of the R system for data analytics have been expanding with impressive speed, it has heretofore been missing important fundamental methods. A new function works with the popular plyr package to provide these missing … Continue reading →

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R’s 2012 Growth in Capability Exceeds SAS’ All Time Total

March 19, 2013
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R’s 2012 Growth in Capability Exceeds SAS’ All Time Total

by Robert A. Muenchen I’m slowly gathering all the data needed to update my ongoing article, The Popularity of Data Analysis Software. The section below is the latest installment. Growth in Capability The capability of all the software in this … Continue reading →

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What Analytic Software are People Discussing?

February 12, 2013
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What Analytic Software are People Discussing?

by Robert A. Muenchen How can we measure the popularity or market share of analytic software? One way is to see what people are discussing. I’m in the process of updating my annual article, The Popularity of Data Analysis Software. Below … Continue reading →

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Comparing Transformation Styles: attach, transform, mutate and within

January 22, 2013
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Comparing Transformation Styles: attach, transform, mutate and within

There are several ways to perform data transformations in R. Each has its own set of advantages and disadvantages. Let’s take one variable, square it and add 100. How many ways might an R beginner screw up such a simple … Continue reading →

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R for SAS, SPSS, Stata Users Workshop Redesigned

October 2, 2012
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R for SAS, SPSS, Stata Users Workshop Redesigned

My workshop R for SAS, SPSS and Stata Users has been popular over the years, but it’s time for an overhaul. A common request has been to simplify it, so I have moved data management to a separate 4-hour workshop, … Continue reading →

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Specifying Variables in R

September 25, 2012
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Specifying Variables in R

R has several ways to specify which variables to use in an analysis. Some of the most frustrating errors can result from not understanding the order in which R searches for variables. This post demonstrates that order, hopefully smoothing your … Continue reading →

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SAS Beats R on July 2012 TIOBE Rankings

July 10, 2012
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SAS Beats R on July 2012 TIOBE Rankings

The TIOBE Community Programming Index ranks the popularity of programming languages, but from a programming language perspective rather than as analytical software (http://www.tiobe.com). It extracts measurements from blogs, entries in Wikipedia, books on Amazon, search engine results, etc. and combines them into a single index. … Continue reading →

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Why R is Hard to Learn

June 13, 2012
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Why R is Hard to Learn

The open source R software for analytics has a reputation for being hard to learn. It certainly can be, especially for people who are already familiar with similar packages such as SAS, SPSS or Stata. Training and documentation that leverages … Continue reading →

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