August 2014

Summer Summary

August 13, 2014 | aschinchon

The universe is full of magical things patiently waiting for our wits to grow sharper (Eden Phillpots) I launched this blog 7 months ago and published 30 posts during this time. These are some of my figures until now: more than 15.000 views from 125 countries (below you can find my map of the ... [Read more...]

Strange behavior from the cut function with dates in R

August 12, 2014 | Patrick

I recently encountered some strange behavior from R when using the cut.POSIXt method with “day” as the interval specification. This function isn’t working as I intended and I doubt that it is working properly. I’ll show you the behavior I’m seeing (and what I was expecting) ... [Read more...]

Visit of Di Cook

August 12, 2014 | Rob J Hyndman

Next week, Professor Di Cook from Iowa State University is visiting my research group at Monash University. Di is a world leader in data visualization, and is especially well-known for her work on interactive graphics and the XGobi and GGobi software. See her book with Deb Swayne for details. For ... [Read more...]

Venn figures go wrong

August 12, 2014 | nsaunders

I thought nothing could top the classic “6-way Venn banana”, featured in The banana (Musa acuminata) genome and the evolution of monocotyledonous plants. That is until I saw Figure 3 from Compact genome of the Antarctic midge is likely an adaptation to an extreme environment. What’s odd is that Figure 2 ... [Read more...]

Knoxville R Users’ Group Meets September 3rd

August 12, 2014 | Bob Muenchen

The Knoxville R Users Group (KRUG) is hosting a brown bag viewing of RStudio’s webinar “Interactive Reporting” at 11am, Weds 3-Sept-2014 in 427 Hesler on the UTK campus “Hill” .  Per RStudio.net, data scientist Garrett Grolemund and software engineer Joe … Continue reading → [Read more...]

Quantitative Finance applications in R – 8

August 12, 2014 | Joseph Rickert

The latest in a series by Daniel Hanson Introduction Correlations between holdings in a portfolio are of course a key component in financial risk management. Borrowing a tool common in fields such as bioinformatics and genetics, we will look at how to use heat maps in R for visualizing correlations ...
[Read more...]

GrapheR: A GUI for base graphics in R

August 12, 2014 | Markus Gesmann

How did I miss the GrapheR package? The author, Maxime Hervé, published an article about the package [1] in the same issue of the R Journal as we did on googleVis. Yet, it took me a package update notification on CRANbeeries to look into GrapheR in more detail - 3 years later! ... [Read more...]

John Chambers: Interfaces, Efficiency and Big Data

August 11, 2014 | David Smith

Joe wrote about this already, but now the recording of John Chambers' keynote presentation from the useR! 2014 conference, Interfaces, Efficiency and Big Data, is now available for viewing thanks to Data Science LA. In the video, John dives into the history of the S language for which he won the ... [Read more...]

Fama/French Factors in 1 line of code

August 11, 2014 | klr

In the past, getting Fama/French factors from the Kenneth French dataset involved a convoluted procedure to download the zip file, unzip the file, clean the data, and convert to xts.  Now with Quandl, we can do it simply in one line of code.  Note: ... [Read more...]

Opening Up Access to Data: Why APIs May Not Be Enough…

August 11, 2014 | Tony Hirst

Last week, a post on the ONS (Office of National Statistics) Digital Publishing blog caught my eye: Introducing the New Improved ONS API which apparently “mak[es] things much easier to work with”. Ooh… exciting…. maybe I can use this to start hacking together some notebooks?:-) It was followed ... [Read more...]
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