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Monthly Archives: December 2014

Why Backtesting On Individual Legs In A Spread Is A BAD Idea

December 31, 2014
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Why Backtesting On Individual Legs In A Spread Is A BAD Idea

So after reading the last post, the author of quantstrat had mostly critical feedback, mostly of the philosophy that prompted … Continue reading →

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Play Data, Play Ball! – Exploring Baseball Data with R

December 31, 2014
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Play Data, Play Ball! – Exploring Baseball Data with R

Demo day: Dec 9, 2014. No photos available. Contributed by Summit Suen & Wayne Chen. They took the CORP-R 002 class with Vivian Zhang (Taiwan Open

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R in Nature, Mashable

December 31, 2014
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R in Nature, Mashable

R was recently the subject of a feature article in the prestigious science magazine Nature: Programming tools: Adventures with R. Besides being free, R is popular partly because it presents different faces to different users. It is, first and foremost, a programming language — requiring input through a command line, which may seem forbidding to non-coders. But beginners can...

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Interactive Simple Networks

December 31, 2014
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Interactive Simple Networks

This post isn't anything new in terms of analysis, but just a cooler look at a previous post. ?I looked at board members of large companies in a previous blog post?and showed via a simple network how they share board members and provided some...

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digest 0.6.8

December 31, 2014
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Release 0.6.8 of digest package is now on CRAN and will get to Debian shortly. This release opens the door to also providing the digest functionality at the C level to other R packages. Wush Wu is going to use the murmurHash C implementation in his r...

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DataVis with Plot.ly (@plotlygraphs) – Meetup Summary

December 30, 2014
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It pains me to admit it, but even though I had visited their site, created...

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SAS is #1…In Plans to Discontinue Use

December 30, 2014
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SAS is #1…In Plans to Discontinue Use

I’ve been tracking The Popularity of Data Analysis Software for many years now, and a clear trend is the decline of the market share?of the bigger analytics firms, notably SAS and SPSS. Many people have interpreted my comments as implying … Continue reading →

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Plot with ggplot2 and plotly within knitr reports

December 30, 2014
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Plot with ggplot2 and plotly within knitr reports

Plotly is a platform for making, editing, and sharing graphs. If you are used to making plots with ggplot2, you can call ggplotly() to make your plots interactive, web-based, and collaborative. For example, see plot.ly/~marianne2/166, shown below. Notice the hover text! The “plotly” R package lets you use plotly with R. Want to try it out? Just copy and paste...

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Widgets For Christmas

December 30, 2014
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For Christmas, I generally want electronic widgets, but after six months of development, all I wanted this Christmas was htmlwidgets, and Santa RStudio/jj,joe,yihui and Santa Ramnath delivered early with this RStudio tweet on December 17th. htmlwidget...

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The 6th Spanish R Users Conference

December 30, 2014
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The 6th Spanish R Users Conference

by Emilio L. Cano The VI Spanish R Users Conference took place on October 23 and 24 in Santiago de Compostela (Spain). It was a two-day event with a variety of talks and workshops about the R statistical software and programming language and its applications. First of all, let me thank all the local organizers, the melisa association and...

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