Brazilian Presidential Election

September 3, 2014
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Brazilian Presidential Election

I hope to have finished the major load on my forecasting model algorithm. I also conclude this project with a new set of clear graphs, although, I still feel working on the colors and scales. I’ve received a few emails asking for more details on the simulations and to make the code available, which is

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Google Charts in R Markdown

September 3, 2014
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Introduction Extrapolation Introduction An excellent little post (Zoom, zoom googleVis) showed up recently on R-Bloggers. The author Markus Gesmann is the maintainer of the googleVis package that links R to the Google Charts API. My first thought was: could I embed charts like those in R Markdown documents that could knit to...

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Hortonworks Seminar Series: The Modern Data Architecture

September 3, 2014
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As more companies explore the benefits that Hadoop may provide, the opportunities to better understand the technology are myriad and unequal. As a provider of in-Hadoop analytics, Revolution Analytics is participating in the coming Hortonworks seminar series. We will be on site to discuss how to deploy R-based analytics within Hadoop clusters using Revolution R Enterprise. The seminar series...

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Notifications from R

September 3, 2014
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Notifications from R

You just sent a long R job running. How to know when it’s done? Have it notify you by beeping, sending you a text, or sending you a notification via pushbullet! beepr You can use Rasmus Bååth’s beepr package to have your computer play a sound. Install it from CRAN with Then, at the bottom

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httr 0.5

September 3, 2014
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httr 0.5

httr 0.5 is now available on CRAN. The httr packages makes it easy to talk to web APIs from R. Learn more in the quick start vignette. This release is mostly bug fixes and minor improvements, but there is one major new feature: you can now save response bodies directly to disk. library(httr) # Download

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rNOMADS 2.0.2 released

September 3, 2014
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rNOMADS 2.0.2 released

I uploaded the newest version of rNOMADS to CRAN yesterday. This one has a new plotting function for wind altitude azimuth, and magnitude (see below for plot and source code). I also added a function for reading GRIB inventories, fixed a few typos, and tweaked a few functions. In other news, the rNOMADS subversion repository

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Scratching that itch from ifelse

September 3, 2014
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Okay, as I wrote yesterday, ifelse is rather slow, at least compared to working in C++. As my current project is using ifelse rather a lot, i decided to write a small utility function. In the expectation that I will … Weiterlesen →

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littler is faster at doing nothing!

September 2, 2014
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With yesterday's announcement of littler 0.2.0, I kept thinking about a few not-so-frequently-asked but recurring questions about littler. And an obvious one if of course the relationship to Rscript. As we have pointed out before, littler preceded Rscript. Now, with Rscript being present in every R installation, it is of course by now more widely known. But there...

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Resources for the FPP book

September 2, 2014
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The FPP resources page has recently been updated with several new additions including R code for all examples in the book. This was already available within each chapter, but the examples have been collected into one file per chapter to save copying and pasting the various code fragments. Slides from a course on Predictive Analytics from the University of Sydney....

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Baseball: Probability of winning conditional on runs, hits, walks and errors

September 2, 2014
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Baseball: Probability of winning conditional on runs, hits, walks and errors

If a team scores X runs, what's the probability it will win the game? The post Baseball: Probability of winning conditional on runs, hits, walks and errors appeared first on Decision Science News.

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The Limit of ATR Order Sizing

September 2, 2014
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The Limit of ATR Order Sizing

Before beginning this post, I’d like to notify readers that I have a webcast tomorrow (Wednesday, Sep. 3) at 4:30 … Continue reading →

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The Importance of ‘Janitorial Work’ in Research

September 2, 2014
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As someone who has spent a significant amount of time ‘data wrangling’ outside the field...

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Win Books and T-shirts in Our DataScience.LA Meetup Raffles, Powered by R and dplyr!

September 2, 2014
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We have a few pieces of swag that we are raffling off to the community...

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New R course on Coursera: Data Analysis and Statistical Inference

September 2, 2014
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New R course on Coursera: Data Analysis and Statistical Inference

Yesterday (Monday 1st of September), a new session of Data Analysis and Statistical Inference, taught by Doctor Mine Çetinkaya-Rundel from Duke university, has started on Coursera. Just like with the previous run, all labs take place in DataCamp’s interactive learning environment. Data Analysis and Statistical Inference will teach you how to make use of data

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“sinkr” – a collection of functions featured on “me nugget”

September 2, 2014
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“sinkr” – a collection of functions featured on “me nugget”

The R package sinkr (version 1.0) has now been released:  https://github.com/menugget/sinkrI have finally gotten around to learning how to create an R package and decided to start by bundling functions that I have featured on the blog. Thanks to the R Studio team for making this so easy (in combination with...

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Using R to simulate the finances of public sector pension funds

September 2, 2014
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by Don Boyd, Senior Fellow, Rockefeller Institute of Government The Rockefeller Institute of Government is excited to be developing models to simulate the finances of public pension funds, using R. Public pension funds invest contributions from governments and public sector workers in an effort to ensure that they can pay all promised benefits when due. State and local government...

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Zoom, zoom, googleVis

September 2, 2014
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Zoom, zoom, googleVis

The Google Charts API is quite powerful and via googleVis you can access it from R. Here is an example that demonstrates how you can zoom into your chart. In the example below I set the maximum zoom level to 5% of the chart. Drag and pan with a left mo...

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analyze the world values survey (wvs) with r

September 2, 2014
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a global barometer of public opinion, the world values survey (wvs) clocks in as your best source of cross-cultural moods, attitudes.   you might find its most famous product sweepingly general, but who among us has never ever swept a smidgen of n...

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Labor day distribution fun

September 1, 2014
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Labor day distribution fun

Pinned, entropy augmented, digitally normal distribution, of no particular work-related use and thus perfectly suitable for today. Code in R: iters = 1000 sd = 2 precision = 20   results = rep(0,iters)   for(i in 1:iters) { x = floor(rnorm(20,5,sd) %% 10) results = paste(c('.',x),sep="",collapse="") }   results = as.numeric(results)   plot(density(results,bw=.01),col="blue",lwd=3,bty="n")

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RSiteCatalyst Version 1.4 Release Notes

September 1, 2014
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RSiteCatalyst Version 1.4 Release Notes

It felt like it would never happen, but RSiteCatalyst v1.4 is now available on CRAN! There are numerous changes in this version of the package, so unlike previous posts, there won’t be any code examples. THIS VERSION IS ONE BIG BREAKING CHANGE While not the most important improvement, it can’t be stressed enough that migrating Related posts:

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Attention Is Preference: A Foundation Derived from Brand Involvement Segmentation

September 1, 2014
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Attention Is Preference: A Foundation Derived from Brand Involvement Segmentation

"A wealth of information creates a poverty of attention."Herbert SimonWe categorize our world so that we can ignore most of it. In order to see figure, everything else must become ground. Once learned, the process seems automatic, and we forget how har...

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5 Ways to Do 2D Histograms in R

September 1, 2014
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5 Ways to Do 2D Histograms in R

Introduction Lately I was trying to put together some 2D histograms in R and found that there are many ways to do it, with directions on how to do so scattered across the internet in blogs, forums and of course, Stackoverflow.As such I thought I'd give each a go and also put all of them together here...

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EditorConfig: force unified coding style from all your contributors

September 1, 2014
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EditorConfig: force unified coding style from all your contributors

In the past 10 years since I started using R, there were a series of things that changed the way I code (in chronological sequence): my first R function, different IDEs, my first R package, roxygen, GitHub, the devtools wiki, StackOverflow, my first useR! conference, continuous integration tools and e.g. participating in the Google Summer of Code. Probably I will...

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littler 0.2.0

September 1, 2014
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littler 0.2.0

We are happy to announce a new release of littler. A few minor things have changes since the last release: A few new examples were added or updated, including use of the fabulous new docopt package by Edwin de Jonge which makes command-...

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Yihui Xie, the useR! 2014 Interview

September 1, 2014
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yyyyyyyyyyyyyyyyyyihui

In science consensus is irrelevant. What is relevant is reproducible results. The greatest scientists in history...

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Points Per Touch (PPT): Running Backs

September 1, 2014
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Points Per Touch (PPT): Running Backs

Overview American writer Lewis Grizzard once said that “The game of life is a lot like football. You have to tackle your problems, block your fears, and score your points The post Points Per Touch (PPT): Running Backs appeared first on Fantasy Football Analytics.

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Rmetrics Software News

September 1, 2014
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(This article was first published on Rmetrics blogs, and kindly contributed to R-bloggers) To leave a comment for the author, please follow the link and comment on his blog: Rmetrics blogs. R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave, LaTeX, SQL, Eclipse, git, hadoop, Web...

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Introducing H2O Lagrange (2.6.0.11) to R

September 1, 2014
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From my perspective the most important event that happened at useR! 2014 was that I got to meet the 0xdata team and now, long story short, here I am introducing the latest version of H2O, labeled Lagrange (2.6.0.11), to the R and greater data science communities. Before joining 0xdata, I was working at a competitor on a rival project and was repeatedly asked...

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A new candidate for worst figure

August 31, 2014
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A new candidate for worst figure

Today I read a paper that had been submitted to the IJF which included the following figure along with several similar plots. (Click for a larger version.) I haven’t seen anything this bad for a long time. In fact, I think I would find it very difficult to reproduce using R, or even Excel (which is particularly adept at...

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