The Current Golden Era of the NBA

April 18, 2014
By
The Current Golden Era of the NBA

We are in the midst of what many are calling a "golden age" of the NBA.  Being in the midst of a time where attention to the sport has seemingly increased is difficult to quantify.  For most people who have had an interest in the NBA over a l...

Read more »

Old tails: a crude power law fit on ebook sales

April 18, 2014
By
Old tails: a crude power law fit on ebook sales

We use R to take a very brief look at the distribution of e-book sales on Amazon.com. Recently Hugh Howey shared some eBook sales data spidered from Amazon.com: The...

Read more »

R and the weather in the local news

April 18, 2014
By
R and the weather in the local news

The Mountain View Voice is a weekly newspaper serving the Silicon Valley area, and is a familiar sight to anyone wandering the streets of Palo Alto or Menlo Park....

Read more »

DM Radio on Data Science

April 18, 2014
By

A couple of weeks ago, I participated in a panel discussion for DM Radio: "Still Sexy? How's that Data Scientist Gig Working Out?". The title was provocative, but the...

Read more »

My talks @ Universitat de Girona

April 18, 2014
By
My talks @ Universitat de Girona

Just after Easter, I'll go for a very quick trip to lovely Girona, where Marc Saez has invited me to give two talks.The first one will be a re-run...

Read more »

Date formating in R

April 18, 2014
By

As I often manipulate time series from different sources, I rarely come across the same date format twice. Having to reformat the dates every time is a real waste...

Read more »

Reot: Empirical Orthogonal Teleconnections in R

April 18, 2014
By
Reot: Empirical Orthogonal Teleconnections in R

We are happy to introduce Reot, an R package designed for empirical orthogonal teleconnection (EOT) analysis of gridded geo-scientific space-time data based on the method by van den Dool...

Read more »

Using Gitbook with R Markdown

April 18, 2014
By
Using Gitbook with R Markdown

Gitbook has been getting some (deserved) attention. For those who haven’t seen it, Gitbook is a system to create really beautiful interactive web (or PDF and ebook) books....

Read more »

Publishing in GitHub

April 17, 2014
By

Publishing in GitHub Publishing in GitHubI struggled to make my first repository in GitHub. I finally found out the steps to...

Read more »

Database for chronic malignancies

April 17, 2014
By

Dear all, recently I have designed a database for Multiple Myeloma, which can easily be extended to include other malignancies and chronic diseases.The database and its guide can be...

Read more »

Physignal Input is 3D Array Only

April 17, 2014
By

Geomorph users,The function physignal() in version 2.0 has a mistake in the manual regarding the input matrix: only 3D array can be used at this time. The next version will have...

Read more »

Diving into H2O

April 17, 2014
By
H2O

by Joseph Rickert One of the remarkable features of the R language is its adaptability. Motivated by R’s popularity and helped by R’s expressive power and transparency developers working...

Read more »

dplyr Example #1

April 17, 2014
By
dplyr Example #1

Hadley Wickam released the dplyr package in January 2014. Since then I have been itching to give it a try as it has been suggested to speed up some...

Read more »

R Interface to Myfxbook

April 17, 2014
By
R Interface to Myfxbook

Myfxbook provides an interface to your FOREX trading accounts as well as an active trading community. It has a broad range of functionality including a responsive interface to the...

Read more »

Make your ggplots shareable, collaborative, and with D3

April 17, 2014
By
Make your ggplots shareable, collaborative, and with D3

Editor's note: This is a guest post from Matt Sundquist form the Plot.ly team.You can access the source code for this post at https://gist.github.com/sckott/10991885Ggplotly and

Read more »

How Fast the Fastest Human Would Run 100m?

April 16, 2014
By
How Fast the Fastest Human Would Run 100m?

Ethan Siegel wrote a post entitled The Math of the Fastest Human Alive five years ago, using regressions. An alternative is too use extreme value models (I wrote a post a...

Read more »

Bitsanity

April 16, 2014
By
Bitsanity

BitsanityThe awesome folks at Quandl (an amazing data collection and distribution service) have been so kind as to allow me to write for their blog.In my first post for...

Read more »

Why writing vectorized code in R is a good idea

April 16, 2014
By

As a language for statistical computing, R has always had a bias towards linear algebra, and is optimized for operations dealing in complete vectors and matrixes. This can be...

Read more »

Using R — Working with Geospatial Data (and ggplot2)

April 16, 2014
By
Using R — Working with Geospatial Data (and ggplot2)

This is a follow-up blog-post to an earlier introductory post by Steven Brey: Using R: Working with Geospatial Data. In this post, we’ll learn how to plot geospatial data in...

Read more »

Modeling Data With Functional Programming In R – Chapter 1

April 16, 2014
By
Modeling Data With Functional Programming In R – Chapter 1

I’m pleased to announce that a rewrite of my first chapter of “Modeling Data With Functional Programming In R” is …Continue reading →

Read more »

Vectorization in R: Why?

April 16, 2014
By

Here are my notes from a recent talk I gave on vectorization at a Davis R Users’ Group meeting. Thanks to Vince Buffalo, John...

Read more »

Geomorph 3D Visualization

April 16, 2014
By
Geomorph 3D Visualization

Dear geomorph users,version 2.0 of geomorph brings new developments in how shape deformations from 3D coordinate shape data can be viewed. We have implemented warping of 3D surface files...

Read more »

Geomorph Version 2.0 Now Available!

April 16, 2014
By

Geomorph users,We have uploaded version 2.0 to CRAN. The windows and mac binaries have been compiled and the tarball is available.Version 2.0 comes with substantial changes and new features: New function...

Read more »

R Courses in Milan (Italy): May 2014

April 16, 2014
By

Dear R users, the May 2014 public training course schedule for Milano (Italy) based courses is as follows: Web Applications with R and Shiny May 15, 2014 Reports in...

Read more »

Errors on percentage errors

April 16, 2014
By
Errors on percentage errors

The MAPE (mean absolute percentage error) is a popular measure for forecast accuracy and is defined as     where denotes an observation and denotes its forecast, and the...

Read more »

Checking (G)LM model assumptions in R

April 16, 2014
By
Checking (G)LM model assumptions in R

(Generalized) Linear models make some strong assumptions concerning the data structure: Independance of each data points Correct distribution of the residuals Correct specification of the variance structure Linear relationship...

Read more »

Topic Modeling In R

April 16, 2014
By

Editor's note: This is the first in a series of posts from rOpenSci's recent hackathon.I recently had the pleasure of participating in rOpenSci's hackathon. To be honest,...

Read more »

Accessing Open Data Portal (India) using APIs

April 15, 2014
By

As I mentioned in my previous blog post, Government of India have started an Open Data Portal for making various data public. Most of the data-sets on the portal...

Read more »

Visualizing Age-Length Keys — More

April 15, 2014
By
Visualizing Age-Length Keys — More

I recently posted on the addition of ageKeyPlot() to the FSA package for visualizing age-length keys. Since that post, I have added one more type of plot as illustrated...

Read more »