statebins – U.S. State Cartogram Heatmaps in R

August 27, 2014
By
statebins – U.S. State Cartogram Heatmaps in R

UPDATE The statebins package is now available on CRAN I became enamored (OK, obsessed) with a recent visualization by the WaPo team which @ryanpitts tweeted and dubbed statebins: Statebins! RT @kevinschaul: States with the most jobs lost or threatened because of trade. http://t.co/r1pJhudpz3 pic.twitter.com/eMozAgyEAb— Ryan Pitts (@ryanpitts) August 24, 2014 In a very real sense...

Read more »

R Workshops Updated to Include the Latest Packages

August 27, 2014
By
R Workshops Updated to Include the Latest Packages

Two new R packages are quickly becoming standards in the R community: Hadley Wickham’s dplyr and tidyr. The dplyr package almost completely replaces his popular plyr package for data...

Read more »

Adding CITATION to your R package

August 27, 2014
By
Adding CITATION to your R package

Original post from Robin's Blog:Software is very important in science – but good software takes time and effort that could be used to do...

Read more »

Reading the Gauss-Markov theorem

August 26, 2014
By
Reading the Gauss-Markov theorem

What is the Gauss-Markov theorem? From “The Cambridge Dictionary of Statistics” B. S. Everitt, 2nd Edition: A theorem that proves that if the error terms in a multiple regression...

Read more »

TTTAR2: My First Shiny App with Bootstrap – #RUGSMAPS

August 26, 2014
By
TTTAR2: My First Shiny App with Bootstrap – #RUGSMAPS

Thing To Try After useR! part 2 (TTTAR2) Originally, this post was supposed to be a sequel to TTTAR1 about h2o machine learning. Since TTTAR1...

Read more »

Statistics: Losing Ground to CS, Losing Image Among Students

August 26, 2014
By

by Norman Matloff The American Statistical Association (ASA) leadership, and many in Statistics academia. have been undergoing a period of angst the last few years, They worry that the...

Read more »

Coursera course on computational finance with R

August 26, 2014
By
Coursera course on computational finance with R

As of today (Tuesday 26th of August), a new session of Professor Eric Zivot’s course on computational finance and financial econometrics starts on Coursera. Just like the previous run of the...

Read more »

Making Your Code Citable

August 26, 2014
By
Making Your Code Citable

Original post from GitHub Guides:Digital Object Identifiers (DOI) are the backbone of the academic reference and metrics system. If you’re a researcher writing...

Read more »

Statistics: Losing Ground to CS, Losing Image Among Students

August 26, 2014
By
Statistics:  Losing Ground to CS, Losing Image Among Students

The American Statistical Association (ASA)  leadership, and many in Statistics academia. have been undergoing a period of angst the last few years,  They worry that the field of Statistics...

Read more »

ChainLadder 0.1.8 released

August 26, 2014
By
ChainLadder 0.1.8 released

Over the weekend we released version 0.1.8 of the ChainLadder package for claims reserving on CRAN. What is claim reserving?The insurance industry, unlike other industries, does not sell...

Read more »

The Chi-Squared Test of Independence – An Example in Both R and SAS

The Chi-Squared Test of Independence – An Example in Both R and SAS

Introduction The chi-squared test of independence is one of the most basic and common hypothesis tests in the statistical analysis of categorical data.  Given 2 categorical random variables, and...

Read more »

Do Massive Workloads Equal Big Declines in Running Back Productivity?

August 25, 2014
By
Do Massive Workloads Equal Big Declines in Running Back Productivity?

The popular wisdom is that “massive workloads” result in a decline in running back productivity in the following season. For example, anecdotal evidence using Corey Dillon (2004) and Jamaal...

Read more »

Continuous or Discrete Latent Structure? Correspondence Analysis vs. Nonnegative Matrix Factorization

August 25, 2014
By
Continuous or Discrete Latent Structure? Correspondence Analysis vs. Nonnegative Matrix Factorization

A map gives us the big picture, which is why mapping has become so important in marketing research. What is the perceptual structure underlying the European automotive market? All...

Read more »

Spline interpolation of temporal resolution for satellite images.

August 25, 2014
By
Spline interpolation of temporal resolution for satellite images.

This week, I had a discussion with a few of...

Read more »

David Smith, the useR! 2014 Interview

August 25, 2014
By
David Smith, the useR! 2014 Interview

“At one point, the only source for daily R news was David Smith’s blog.” —...

Read more »

Of Needles and Haystacks: Building an Accurate Statewide Dropout Early Warning System in Wisconsin

August 25, 2014
By
Of Needles and Haystacks: Building an Accurate Statewide Dropout Early Warning System in Wisconsin

For the past two years I have been working on the Wisconsin Dropout Early Warning System, a predictive model of on time high school graduation for students in grades...

Read more »

8 new R jobs (for Augest 25th 2014)

August 25, 2014
By
r_jobs

This is the bimonthly R Jobs post (for 2014-08-25), based on the R-bloggers’ sister website: R-users.com. If you are an employer who is looking to hire people from the R community, please visit this link...

Read more »

Some love for ggplot2

August 25, 2014
By
Some love for ggplot2

With all the recent buzz about ggvis (this, this, and this) it’s often easy to forget all that ggplot2 offers as a graphics package. True, ggplot is a static...

Read more »

New in OpenCPU 1.4.4: session namespaces

August 24, 2014
By
New in OpenCPU 1.4.4: session namespaces

The OpenCPU system exposes an HTTP API for embedded scientific computing with R. This provides reliable and scalable foundations for integrating R based...

Read more »

Forecasting with R in WA

August 24, 2014
By

On 23–25 September, I will be running a 3-day workshop in Perth on “Forecasting: principles and practice” mostly based on my book of the same name. Workshop participants will...

Read more »

R: Stem (Pre-Processed) Text Blocks

August 24, 2014
By
R: Stem (Pre-Processed) Text Blocks

Objective I recently needed to stem every word in a block of text i.e. reduce each word to a root form. Problem The stemmer I was using would only...

Read more »

JAGS and Stan

August 24, 2014
By
JAGS and Stan

During the last year I have been running some estimations in both JAGS and Stan. In that period I have seen one example where JAGS could not get me...

Read more »

Computational Actuarial Science, with R

August 24, 2014
By

The book Computational Actuarial Science, with R is officially out. In the introduction of the book, and on the website of CRC, it is mentioned that the datasets can be...

Read more »

VCI — The Value Charts Indicator

August 23, 2014
By
VCI — The Value Charts Indicator

So recently, I was made known of the Value Charts Indicator , which was supposed to be some form of … Continue reading →

Read more »

R OOP – a little privacy please?

August 23, 2014
By

As of late, I’ve been making heavy use of Reference Classes in R. They are easier for me to wrap my mind around since they adopt a usage...

Read more »

An adverse consequence of fitting "maximal" linear mixed models

August 23, 2014
By
An adverse consequence of fitting "maximal" linear mixed models

Distribution of intercept-slope correlation estimates with 37 subjects, 15 itemsDistribution of intercept-slope correlation estimates with 50 subjects, 30 itemsShould one always fit a full variance covariance matrix (a "maximal"...

Read more »

More ESA 2014 Program Text-Mining: Topics as Communities

August 22, 2014
By
More ESA 2014 Program Text-Mining: Topics as Communities

In my first pass at text analysis of the ESA program, I looked at how the frequency of words used in the ESA program differed from...

Read more »

Entering the field as a data scientist with certification

August 22, 2014
By

By Neera Talbert, VP Services and Ben Wiley, R Programmer at Revolution Analytics By now, everyone should be familiar with the data scientist boom. Simply logging onto LinkedIn reveals...

Read more »

Pro Grammar and Devel Hoper

August 22, 2014
By
Pro Grammar and Devel Hoper

I've been teasing about this post for some time now. My next blog post is "Pro Grammar and Devel Hoper". And this not just an empty pun. Stay...

Read more »