November 2014

Interview with SERATRON – Lego EV3 robot driven by R

November 30, 2014 | 0 Comments

Next meeting of Warsaw R Enthusiasts (SER = Spotkania Entuzjastów R) will take place on December 8. We are going to start with Roger Bivand talk about spatial statitics (R Foundation / NHH, author of many R packages). The second talk, by Bartosz Meglicki (IPI PAN), will introduce the SERATRON – fusion of ... [Read more...]

Book Review: R Object-oriented Programming

November 30, 2014 | 0 Comments

Recently, Packt Publishing publish the book R Object-oriented Programming. The eleven chapter book covers from basic data types in R to a more advanced method such as simulation and writing functions.  Different data types (i.e. integer, character...
[Read more...]

FOMC Dates – Scraping Data From Web Pages

November 30, 2014 | 0 Comments

Before we can do some quant analysis, we need to get some relevant data - and the web is a good place to start. Sometimes the data can be downloaded in a standard format like .csv files or available via an API e.g. http://www.quandl.com but often ... [Read more...]

Change in temperature in Netherlands over the last century

November 30, 2014 | 0 Comments

I read a post 'race for the warmest year' at sargasso.nl. They used a plot, originating from Ed Hawkins to see how 2014 progressed to be warmest year. Obviously I wanted to make the same plot using R. In addition, I wondered which parts of the year had... [Read more...]

Storing Forecasts in a Database

November 29, 2014 | 0 Comments

In my last post I mentioned that I started using RSQLite to store computed results. No rocket science here, but my feeling is that this might be useful to others, hence, this post. This can be done using any database, but I will use (R)SQLite as an illustration. Let’... [Read more...]

RcppArmadillo 0.4.550.1.0

November 29, 2014 | 0 Comments

A week ago, Conrad provided another minor release 4.550.0 of Armadillo which has since received one minor correction in 4.550.1.0. As before, I had created a GitHub-only pre-release of his pre-release which was tested against the almost one hundred CRAN dependents of our RcppArmadillo package. This passed fine as usual, and results ... [Read more...]

CRAN Task Views for Finance and HPC now (also) on GitHub

November 28, 2014 | 0 Comments

The CRAN Task View system is a fine project which Achim Zeileis initiated almost a decade ago. It is described in a short R Journal article in Volume 5, Number 1. I have been editor / maintainer of the Finance task view essentially since the very beginning of these CRAN Task Views, and ... [Read more...]

Some R Highlights from H20 World

November 28, 2014 | 0 Comments

by Joseph Rickert H2O.ai held its first H2O World conference over two days at the Computer History Museum in Mountain View, CA. Although the main purpose of the conference was to promote the company's rich set of Java based machne learning algorithms and announce their new products ... [Read more...]

Instagram a Termoli (CB)

November 28, 2014 | 0 Comments

div__Salvino A. Salvaggio, PhDSe Facebook, WhatsApp, Viber, Twitter e SnapChat —per citarne solo alcuni— fanno integralmente parte della vita quotidiana di giovani e meno giovani, non sono gli unici social networks sul mercato. Instagram, per esempio, e' stato adottato in massa perché consente di condividere facilmente su Internet foto ... [Read more...]

R, an Integrated Statistical Programming Environment and GIS

November 27, 2014 | 0 Comments

This article was originally published in Geoinformatics magazine. R is well known as a powerful, extensible and relatively fast statistical programming language and open software project with a command line interface (CLI). What is less well known is that R also has cutting edge spatial packages that allow it to ...
[Read more...]

Le Monde puzzle [#887quater]

November 27, 2014 | 0 Comments

And yet another resolution of this combinatorics Le Monde mathematical puzzle: that puzzle puzzled many more people than usual! This solution is by Marco F, using a travelling salesman representation and existing TSP software. N is a golden number if the sequence {1,2,…,N} can be reordered so that the sum ...
[Read more...]

Mango Movember

November 27, 2014 | 0 Comments

This month the Mango Movember team have done a fantastic job of growing the most impressive moustaches. All cash raised is for research and awareness of, prostate cancer, testicular cancer and mental health problems. You can sponsor them using the following link: … Continue reading → [Read more...]

Eggnog for Thanksgiving

November 27, 2014 | 0 Comments

It's Thanksgiving Day here in the US, so we're taking the day off to spend some time with our families and to eat far too much food. If you're in the US or celebrating Thanksgiving elsewhere, enjoy the day! And for everyone in this season of joy, here's a handy ... [Read more...]

New Australian data on the HMD

November 26, 2014 | 0 Comments

The Human Mortality Database is a wonderful resource for anyone interested in demographic data. It is a carefully curated collection of high quality deaths and population data from 37 countries, all in a consistent format with consistent definitions. I have used it many times and never cease to be amazed at ... [Read more...]

How About a “Snowdoop” Package?

November 26, 2014 | 0 Comments

Along with all the hoopla on Big Data in recent years came a lot of hype on Hadoop.  This eventually spread to the R world, with sophisticated packages being developed such as rmr to run on top of Hadoop. Hadoop made it convenient to process data in very large distributed ... [Read more...]
1 2 3 12

Never miss an update!
Subscribe to R-bloggers to receive
e-mails with the latest R posts.
(You will not see this message again.)

Click here to close (This popup will not appear again)