Diving into H2O

April 17, 2014
By

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 on other platforms display what looks like inexhaustible creativity in providing seamless interfaces to software that complements R’s strengths. The H2O R package that connects to 0xdata’s H2O software (Apache...

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 »

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 »

Oracle’s Strategy for Advanced Analytics

April 15, 2014
By

At Oracle our goal is to enable you to get timely insight from all of your data. We continuously enhance Oracle Database to allow workloads that have traditionally required...

Read more »

Investigating the relationship between gold and bitcoin prices with R.

April 15, 2014
By
Investigating the relationship between gold and bitcoin prices with R.

Image by Ennio Pozzetti   In this post I will explore some of the movements in markets in recent years, these movements have caught many by surprise resulting in...

Read more »

Wealth and Skill | A Talk to Students

April 15, 2014
By

I enjoyed talking to University of Alabama students this morning about wealth, skill, and luck.  I tried to synthesize a whole lot of research into something meaningful.  Of course,...

Read more »

Quantitative Finance Applications in R – 5: an Introduction to Monte Carlo Simulation

April 15, 2014
By
Quantitative Finance Applications in R – 5: an Introduction to Monte Carlo Simulation

by Daniel Hanson Last time, we looked at the four-parameter Generalized Lambda Distribution, as a method of incorporating skew and kurtosis into an estimated distribution of market returns, and...

Read more »

googleVis 0.5.1 released on CRAN

April 15, 2014
By
googleVis 0.5.1 released on CRAN

GoogleVis 0.5.1 was released on CRAN yesterday. New Features New functions gvisSankey, gvisAnnotationChart, gvisHistogram,gvisCalendar and gvisTimeline to support the new Google charts of the same names (without 'gvis'). New...

Read more »

Use of freqparcoord for Regression Diagnostics

April 14, 2014
By
Use of freqparcoord for Regression Diagnostics

This is the third in my series of three posts on my package freqparcoord with Yingkang Xie. (My next post after this will show how to use R to...

Read more »

Video: Mining Tweets with R

April 14, 2014
By

This post shares the video from the talk presented in 2014 by Eu Jin Lok on mining tweets with R presented at Melbourne R Users. Twitter is currently ranked...

Read more »

BH release 1.54.0-2

April 14, 2014
By

Yesterday's release of RcppBDT 0.2.3 lead to an odd build error. If one used at the same time a 32-bit OS, a compiler as recent as g++ 4.7 and the Boost...

Read more »

Interfacing R with Web technologies

April 14, 2014
By

A new Task View on CRAN will be of anyone who needs to connect R with Web-based applications. The Web Technologies and Services Task View lists R functions and...

Read more »

Transitioning to Stan

April 14, 2014
By

Kevin Cartier writes: I’ve been happily using R for a number of years now and recently came across Stan. Looks big and powerful, so I’d like to pick an...

Read more »

Modeling "This Time is Different" in R

April 14, 2014
By
Modeling "This Time is Different" in R

Check out PDF for...

Read more »

Example 2014.4: Hilbert Matrix

April 14, 2014
By
Example 2014.4: Hilbert Matrix

Rick Wicklin showed how to make a Hilbert matrix in SAS/IML. Rick has a nice discussion of these matrices and why they might be interesting; the value of...

Read more »

Modeling "This Time is Different"

April 14, 2014
By
Modeling "This Time is Different"

Check out PDF for Equations And Code to run yourselfIntroduction: “This Time is different” by Reinhart and Rogoff is an empirical history of financial crises and panics....

Read more »

Public Universities Should Use Open Source Software

April 14, 2014
By
Public Universities Should Use Open Source Software

(This article was first published on Econometrics by Simulation, and kindly contributed to R-bloggers) The Homeless Econometrician: Black Box SoftwareChoosing to go open source is a big deal.  It...

Read more »