R and Data Mining – Examples and Case Studies now in Chinese

December 1, 2014
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R and Data Mining – Examples and Case Studies now in Chinese

My book titled R and Data Mining – Examples and Case Studies now has its Chinese version, translated by researchers at South China University of Technology, and published by China Machine Press in September 2014. It is sold in China … Continue reading →

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Bio7 2.0 for Windows Released!

December 1, 2014
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Bio7 2.0 for Windows Released!

01.12.2014 A new Windows version of Bio7 is available. Many new features have been added to Bio7 2.0 which is now based on Eclipse 4.4. Highlights are the improved R editor, the R debugging Graphical User Interface (using the standard R debugger), the integrated Java Development Tools (JDT) to create Java simulation models with a

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Eight Christmas Gift Ideas for the Statistically Interested

December 1, 2014
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Eight Christmas Gift Ideas for the Statistically Interested

Christmas is soon upon us and here are some gift ideas for your statistically inclined friends (or perhaps for you to put on your own wish list). If you have other suggestions please leave a comment! :) 1. Games of probability A recently released game where probability takes the main role is Pairs, an easy going press-your-luck game that can...

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magrittr 1.5

December 1, 2014
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2014-12-02 22_48_10-Clipboard

(Posted on behalf of Stefan Milton Bache) Sometimes it’s the small things that make a big difference. For me, the introduction of our awkward looking friend, %>%, was one such little thing. I’d never suspected that it would have such an impact on the way quite a few people think and write R (including my

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Romain Francois at MilanoR meeting

December 1, 2014
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Romain Francois is a 32-years old R developer and consu

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Interview with SERATRON – Lego EV3 robot driven by R

November 30, 2014
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Interview with SERATRON – Lego EV3 robot driven by R

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 R and

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Turn R (Shiny) Scripts Into Double-clickable OS X Applications With One Line of Code

November 30, 2014
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Turn R (Shiny) Scripts Into Double-clickable OS X Applications With One Line of Code

I was playing with some non-security-oriented R+Shiny code the other day, and thought that Shiny apps would be even more useful if they were double-clickable applications that you could “just run”—provided R was installed on the target system—vs have to cut/paste code into R. Now, I know it’s not hard to enter: shiny::runGist('95ec24c1b0cb433a76a5', launch.browser=TRUE) at an R console, but I’ll wager...

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Book Review: R Object-oriented Programming

November 30, 2014
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Book Review: R Object-oriented Programming

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...

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Change in temperature in Netherlands over the last century

November 30, 2014
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Change in temperature in Netherlands over the last century

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...

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Storing Forecasts in a Database

November 29, 2014
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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’s assume we are running a long

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RcppArmadillo 0.4.550.1.0

November 29, 2014
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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 are as always...

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

November 28, 2014
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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...

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Some R Highlights from H20 World

November 28, 2014
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Some R Highlights from H20 World

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 Flow and Play there were quite a few sessions devoted to R...

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R Object-oriented Programming – Book Review

November 28, 2014
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R Object-oriented Programming – Book Review

(This article was first published on R Video tutorial for Spatial Statistics, and kindly contributed to R-bloggers) I have been asked to review the book “R Object-oriented Programming” by Kelly Black, edited by Packt publishing (£14.45 for the E-Book, £27.99 for Print+E-Book).The scope of the book is “to provide a resource for programming using the R language” and therefore...

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R Package or Library

November 28, 2014
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In these days, I was talking about an R package I devel

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R, an Integrated Statistical Programming Environment and GIS

November 27, 2014
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R, an Integrated Statistical Programming Environment and GIS

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 behave as a fully featured Geographical Information System...

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Le Monde puzzle [#887quater]

November 27, 2014
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Le Monde puzzle [#887quater]

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 of any consecutive pair is a

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Eggnog for Thanksgiving

November 27, 2014
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Eggnog for Thanksgiving

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 app to scale your eggnog recipe, however many people...

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New Australian data on the HMD

November 26, 2014
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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 the care taken to maintain

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How About a “Snowdoop” Package?

November 26, 2014
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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 databases, and also convenient to create … Continue reading...

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Confidence vs. Credibility Intervals

November 26, 2014
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Confidence vs. Credibility Intervals

Tomorrow, for the final lecture of the Mathematical Statistics course, I will try to illustrate - using Monte Carlo simulations - the difference between classical statistics, and the Bayesien approach. The (simple) way I see it is the following, for frequentists, a probability is a measure of the the frequency of repeated events, so the interpretation is that parameters are...

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Happy Thanksgiving | More Examples of XML + rvest with SVG

November 26, 2014
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I did not intend for this little experiment to become a post, but I think the code builds nicely on the XML + rvest combination (also see yesterday’s post) for working with XML/HTML/SVG documents in R. It all started when I was playing on my iPhone i...

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Slightly Advanced rvest with Help from htmltools + XML + pipeR

November 26, 2014
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Hadley Wickham’s post “rvest: easy web scraping with R” introduces the fine new package rvest very well.  For those now yearning a slightly more advanced example with a little help from pipeR + htmltools + XML, I thought this might fill your yea...

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MilanoR meeting: 18th December

November 26, 2014
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MilanoR meeting: 18th December

MilanoR staff is happy to announce the next MilanoR mee

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The beautiful R charts in London: The Information Capital

November 26, 2014
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The beautiful R charts in London: The Information Capital

If you've lived in or simply love London, a wonderful new book for your coffee-table is London: The Information Capital. In 100 beautifully-rendered charts, the book explores the data that underlies the city and its residents. To create most of these charts, geographer James Cheshire and designer Oliver Uberti relied on programs written in R. Using the R programming...

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Extracting NOAA sea surface temperatures with ncdf4

November 25, 2014
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I’ve written previously about some example R scripts I created to extract sea surface temperature data from NOAA’s Optimum Interpolated Sea Surface Temperature products. If you want daily global sea surface temperatures on a 0.25×0.25° grid, they gather those into 1-year files available at http://www.esrl.noaa.gov/psd/data/gridded/data.noaa.oisst.v2.highres.html. If you want weekly average SST values on a 1×1°

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The gridGraphics Package (2014-03)

November 25, 2014
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2014-11-24 22_56_08-Clipboard

The gridGraphics package provides a function, grid.echo(), that can be used to convert a plot drawn with the graphics package to the same result drawn using grid. This provides access to a variety of grid tools for making customisations and … Continue reading →

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RStudio shortcuts (Windows) – for cleaner and faster coding

November 25, 2014
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RStudio shortcuts (Windows) – for cleaner and faster coding

RStudio has a number of keyboard shortcuts that make for cleaner and faster coding. I put all the Windows shortcuts that I use onto a single page so that I can pin them next to my computer. (PDF) Some favourites of mine are: Using code sections/chunks - Use Ctrl+Shift+R to insert a code section and a popup

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An Update on Flexible Asset Allocation

November 25, 2014
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An Update on Flexible Asset Allocation

A few weeks back, after seeing my replication, one of the original authors of the Flexible Asset Allocation paper got … Continue reading →

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