Brazilian Presidential Election

September 20, 2014
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Brazilian Presidential Election

TweetFor those who follow this tale, the chart below shows the hitherto of vote intentions among the viable candidates as reported in various polls. Data collected over 2012 were simply disregarded and those from 2013 enter in the model as prior values (covariance) for the 2014 estimates. The big dots at the end of the … Read More...

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Charting/Mapping the Scottish Vote with R (an rvest/dplyr/tidyr/TopoJSON/ggplot tutorial)

September 20, 2014
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Charting/Mapping the Scottish Vote with R (an rvest/dplyr/tidyr/TopoJSON/ggplot tutorial)

The BBC did a pretty good job live tracking the Scotland secession vote, but I really didn’t like the color scheme they chose and decided to use the final...

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Using the Debug Option in readDICOMfile()

September 20, 2014
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Using the Debug Option in readDICOMfile()

Some recent activity in stackoverflow was brought to my attention.  Specifically, several questions were raised with reading files into R using readDICOMFile() in the oro.dicom package. The questions did...

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momentify R package

September 19, 2014
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momentify R package

I presented today an arxived paper of my postdoc at the big success Young Bayesian Conference in Vienna. The big picture of the talk is simple: there are situations in Bayesian nonparametrics...

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Yep. He made it; country voted No.

September 19, 2014
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Yep. He made it; country voted No.

Tweet Yesterday, more Scots than ever since universal suffrage was introduced cast a ballot on the matter of independence. The turnout was itself phenomenal and that implicating a series...

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Webinar September 25: Data Science with R

September 19, 2014
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A quick heads up that if you'd like to get a great introduction to doing data science with the R language, Joe Rickert will be giving a free webinar...

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What does CNN have in common with Carmen Reinhart, Kenneth Rogoff, and Richard Tol: They all made foolish, embarrassing errors that would never have happened had they been using R Markdown

September 19, 2014
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What does CNN have in common with Carmen Reinhart, Kenneth Rogoff, and Richard Tol:  They all made foolish, embarrassing errors that would never have happened had they been using R Markdown

Rachel Cunliffe shares this delight: Had the CNN team used an integrated statistical analysis and display system such as R Markdown, nobody would’ve needed to type in the numbers...

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The New Consumer Requires an Updated Market Segmentation

September 18, 2014
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The New Consumer Requires an Updated Market Segmentation

The new consumer is the old consumer with more options and fewer prohibitions. Douglas Holt calls it the postmodern market defined by differentiation: "consumer identities are being fragmented, proliferated, recombined, and...

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Pander tables inside of knitr

September 18, 2014
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Pander tables inside of knitr

Hadley Wickham opened my eyes that calling pander to generate nifty markdown tables inside of knitr requires a special chunk option, which bothersome extra step might be saved by updating pander...

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“Do You Want to Steal a Snowman?” – A Look (with R) At TorrentFreak’s Top 10 PiRated Movies List #TLAPD

September 18, 2014
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“Do You Want to Steal a Snowman?” – A Look (with R) At TorrentFreak’s Top 10 PiRated Movies List #TLAPD

We leave the Jolly Roger behind this year and turn our piRate spyglass towards the digital seas and take a look at piRated movies as seen...

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Interactive Visualizations from R using rCharts

September 18, 2014
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At useR! 2014 Ramnath Vaidyanathan gave a tutorial and a presentation on one of his...

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Comparing machine learning models in R

September 18, 2014
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Comparing machine learning models in R

by Joseph Rickert While preparing for the DataWeek R Bootcamp that I conducted this week I came across the following gem. This code, based directly on a Max Kuhn...

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Stay on track: Plotting GPS tracks with R

September 18, 2014
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Stay on track: Plotting GPS tracks with R

Many GPS devices and apps have the capability to track your current position via GPS. If you go walking, running, cycling, flying or driving, you can take a look...

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Space Invaders

September 17, 2014
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Space Invaders

I burned through all of my extra lives in a matter of minutes, and my two least-favorite words appeared on the screen: GAME OVER (Ernest Cline, Ready Player One)...

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Fun with .Rprofile and customizing R startup

Fun with .Rprofile and customizing R startup

Over the years, I've meticulously compiled–and version controlled–massive and extensive configuration files for virtually all of my most used utilities, most notably vim, tmux, and zsh. In fact, one...

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Animated choropleths to visualize mortality rates of children under 5 and gender differences using rMaps

September 17, 2014
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This post displays two animated choropleths. One for global mortality rates for children under 5 (per 1000 live births) and the second for the difference in global mortality rates...

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BCEA 2.1

September 17, 2014
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BCEA 2.1

We're about to release the new version of BCEA, which will contain some major changes.A couple of changes in the basic code that should improve the computational speed. In...

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Applications of R presentations at Dataweek

September 17, 2014
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I'm speaking at the DataWeek conference in San Francisco today. My talk follows Skylar Lyon from Accenture — I'm really looking forward to hearing how he uses Revolution R...

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Migrating Table-oriented Web Scraping Code to rvest w/XPath & CSS Selector Examples

September 17, 2014
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I was offline much of the day Tuesday and completely missed Hadley Wickham’s tweet about the new rvest package: Are you an #rstats user who misses python's...

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Bayes says “don’t worry” about Scotland’s Referendum

September 17, 2014
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Bayes says “don’t worry” about Scotland’s Referendum

Just few hours before Scots head to the polls, there is not an overwhelming advantage of the anti-independence vote. Actually, the margin is shorter than last time I looked...

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Using great circles and ggplot2 to map arrival/departure of 2014 US Open Tennis Players

September 17, 2014
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Using great circles and ggplot2 to map arrival/departure of 2014 US Open Tennis Players

Please click on the image for information on how to use R and ggplot2 to generate this plot. 

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Maximal Information Coefficient (Part II)

September 17, 2014
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Maximal Information Coefficient (Part II)

A while back, I wrote a post simply announcing a recent paper that described a new statistic called the "Maximal Information Coefficient" (MIC),...

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Changes to FSA — Size Structure

September 16, 2014
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Changes to FSA — Size Structure

I have added a (very rough) first draft to the Size Structure chapter of the forthcoming Introductory Fisheries Science with R book on the book’s fishR webpage.  Accompanying this...

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PerformanceAnalytics update released to CRAN

September 16, 2014
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PerformanceAnalytics update released to CRAN

Version number 1.4.3541 of PerformanceAnalytics was released on CRAN today. If you’ve been following along, you’ll note that we’re altering our version numbering system.  From here on out, we’ll...

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New members for R-core and R Foundation

September 16, 2014
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The R Foundation for Statistical Computing, the Vienna-based non-profit organization that oversees the R Project, has just added several new "ordinary members". (Ordinary members participate in R Foundation meetings...

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R package to convert statistical analysis objects to tidy data frames

September 16, 2014
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I talked a little bit about tidy data my recent post about dplyr, but you should really go check out Hadley’s paper on the subject. R expects inputs...

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3D Sine Wave

September 16, 2014
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3D Sine Wave

Had a headache last night, so decided to take things easy and...

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Notes from the Kölner R meeting, 12 September 2014

September 16, 2014
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Notes from the Kölner R meeting, 12 September 2014

Last Friday we had guests from Belgium and the Netherlands joining us in Cologne. Maarten-Jan Kallen from BeDataDriven came from The Hague to introduce us to Renjin, and...

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Using SQLite in R

September 16, 2014
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Using SQLite in R

Working on big data requires a clean and robust approach on storing and accessing the data. SQLite is an all inclusive server-less database system in a single file. This...

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