Blog Archives

R gui Revisited

May 27, 2014
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A couple months ago I wrote about switching my class from using SPSS to one that uses R with a gui frontend (original post). Since the semester has wrapped up, below are my thoughts on how the course went with respect to the students using R. Things ...

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AERA Preview

April 2, 2014
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The American Educational Research Association (AERA) annual conference is this weekend in Philadelphia. I was lucky to have a paper accepted into the conference. I am presenting a meta analysis that I have been working on for the past two years or so titled: Model misspecification and assumption violations with the linear mixed model: A meta analysis. In...

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Evolution of Code

March 27, 2014
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Recently while scraping some data from the college football data warehouse site, I started to realize the evolution of my code. To preface this, I am definitely not a trained programmer, just a self taught junky who enjoys doing it when I have time. ...

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Update to highlightHTML package

March 14, 2014
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I've added a new functionality to my highlightHTML package. This package post-processes HTML files and injects CSS and adds tags to create some further customization (for example highlight cells of a HTML table). This is most useful when writing a document using markdown and converting it into a HTML document using a tool like knitr, slidify, or...

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rCharts with slidy

March 3, 2014
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My last post I talked about using rCharts to create interactive graphics for my interview presentations. They seemed to go over pretty well in my interviews and helped me greatly as I did not need to remember or write down specific numbers to talk about. I use slidy to create my HTML slideshows and there was some...

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Interactive charts with rCharts

February 15, 2014
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I have a few upcoming presentations as a part of job interviews. To prepare for these interviews, I'm attempting to make my figures a bit more interactive within my presentations. The aim is to be able to limit any large cumbersome tables I would need to include in my presentations and replace them with interactive plots that can...

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Picking a gui interface for R

February 3, 2014
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Recently I decided to switch statistical programs used introductory statistics course for masters students that I teach at the University of Arkansas. Historically this course has been taught with SPSS, but I am attempting the switch to R this semeste...

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When I use plyr/dplyr

January 24, 2014
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My last post I talked about how I use the data.table package for aggregating and removing duplicate observations. Although I use the data.table package quite often, there are many times when I use plyr (and now the new dplyr) package, primarily becaus...

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Two of my favorite data.table features

January 6, 2014
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When I started to use the data.table package I was primarily using it to aggregate. I had read about data.table and its blazing speed compared to the other options from base or the plyr package especially with large amounts of data. As an example, I ...

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Guessing Correlations: A shiny app

December 30, 2013
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Guessing Correlations: A shiny app

A recent hobby of mine (as with many other R users) is to play around with the relatively new R package: shiny. I started creating demo applications about a year ago just to figure out how powerful the platform could be, but it was not until this fall that I started creating some applications for others to use. I...

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