July 2015

Roll Your Own Gist Comments Notifier in R

July 25, 2015 | hrbrmstr

As I was putting together the coord_proj ggplot2 extension I had posted a (https://gist.github.com/hrbrmstr/363e33f74e2972c93ca7) that I shared on Twitter. Said gist received a comment (several, in fact) and a bunch of us were painfully reminded of the fact that there ... [Read more...]

New quantmod and TTR on CRAN

July 24, 2015 | Joshua Ulrich

I just sent quantmod_0.4-5 to CRAN, and TTR_0.23-0 has been there for a couple weeks. I'd like to thank Ivan Popivanov for many useful reports and patches to TTR. He provided patches to add HMA (Hull MA), ALMA, and ultimateOscillator functions.Jam... [Read more...]

{Long Vs. Wide} Data Frames

July 24, 2015 | Pablo C.

Introduction This is an excellent resource to understand 2 types of data frame format: Long and Wide. Just take a look at figure 1 inside the article 1) Long format: ggplot2 needs in certain scenarios this kind of format to work (generally grouped... [Read more...]

Why I use Panel/Multilevel Methods

July 24, 2015 | diffuseprior

I don’t understand why any researcher would choose not to use panel/multilevel methods on panel/hierarchical data. Let’s take the following linear regression as an example: , where is a random effect for the i-th group. A pooled OLS regression model for the above is unbiased and consistent. ...
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CACM Highlights R

July 23, 2015 | matloff

The Association for Computing Machinery is the main professional organization for computer science, largely for academia but still with a broad membership. ACM publishes a number of journals, most of them for research but its flagship publication is a magazine, the Communications of the ACM. The current issue of the ... [Read more...]

An alternative presentation of the ProPublica Surgeon Scorecard

July 23, 2015 | Ewen Harrison

ProPublica, an independent investigative journalism organisation, have published surgeon-level complications rates based on Medicare data. I have already highlighted problems with the reporting of the data: surgeons are described as having a “high adjusted rate of complications” if they fall in the red-zone, despite there being too little data to ... [Read more...]

Revolution R Open 3.2.1 now available

July 23, 2015 | David Smith

The latest update to Revolution R Open, RRO 3.2.1, is now available for download from MRAN. This release upgrades to the latest R engine (3.2.1), enables package downloads via HTTPS by default, and adds new supported Linux platforms. Revolution R Open 3.2.1 includes: The latest R engine, R 3.2.1. Improvements in this release include ... [Read more...]

Administrative Maps and Projections in R

July 23, 2015 | Ari Lamstein

Today I will demonstrate how to create maps of “other countries”, and use map projections, with the choroplethr package in R. I write “other countries” in quotes because, like most things, translating a high level wish into software can be complicated. If you want to skip ahead and play with ...
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Waterfall plots – what and how?

July 23, 2015 | jyothi

“Waterfall plots” are nowadays often used in oncology clinical trials for a graphical representation of the quantitative response of each subject to treatment. For an informative article explaining waterfall plots see Understanding Waterfall Plots. In this post, we illustrate the creation of waterfall plots in R. In a typical waterfall ...
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Call for participation: AusDM 2015, Sydney, 8-9 August

July 23, 2015 | Yanchang Zhao

************************************************************* The 13th Australasian Data Mining Conference (AusDM 2015) Sydney, Australia, 8–9 August 2015 URL: http://ausdm15.ausdm.org/ ************************************************************* The Australasian Data Mining Conference is devoted to the art and science of intelligent data mining: the meaningful analysis of (usually large) data … Continue reading → [Read more...]
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