Monthly Archives: April 2013

Interview by DecisionStats

April 5, 2013
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Ajay Ohri interviewed me on his popular DecisionStats blog. Topics discussed ranged widely from Fellows Statistics, to Deducer, to statnet, to Poker A.I., to Big Data.    

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Extending RevoScaleR for Mining Big Data – Hexbins

April 5, 2013
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Extending RevoScaleR for Mining Big Data – Hexbins

by Derek McCrae Norton, Senior Sales Engineer It is my job to help potential clients see that the tasks they are used to completing can be completed on big data in Revolution R Enterprise (and that it is easy). Honestly, this is my dream job, and in my eyes it is sort of like playing and getting paid for...

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Import/Export data to and from xlsx files

April 5, 2013
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Import/Export data to and from xlsx files

As Ive already written, getting data into R from your precious xlsx files is really handy. No need to clutter up your computer with txt or csv files. The previous post I wrote about the gdata package for importing data from xlsx files and was pointed to, among others, the xlsx package. xlsx seems to

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Estimated Follower Accession Charts for Twitter

April 5, 2013
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Estimated Follower Accession Charts for Twitter

Just over a year or so ago, Mat Morrison/@mediaczar introduced me to a visualisation he’d been working on (How should Page Admins deal with Flame Wars?) that I started to refer to as an accession chart (Visualising Activity Around a Twitter Hashtag or Search Term Using R). The idea is that we provide each entrant

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R, D3.js and SNA Course

I took the SNA course by Lada Adamic in coursera. It's a super interesting course. In fact, I was using the networks only how a visualization tool, and that is what it make me little bit embarrassing because there are more, a lot of more. You can detec...

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d3 Lifeline from vega and clickme

April 4, 2013
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This has been an exciting week for d3.js and R with the release of vega by the data vis powerhouses at Trifacta launch of clickme and already significant rewrite to accommodate vega inception of a very promising d3 templates DexCharts described in multiple posts. I am glad to have had...

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Announcing eeptools 0.2

April 4, 2013
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My R package eeptools has reached version 0.2. As with the last release, this is still a preliminary release which means that functionality is not full, function names and code behavior may still change from version to version, and I am still looking f...

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Subtraction Is Crazy

April 4, 2013
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Subtraction Is Crazy

I was re-reading Michael Murray’s explanation of cointegration: and marvelling at the calculus. Calculus blows my mind sometimes. Like, hey guess how much we can do with subtraction. — protëa(@isomorphisms) March 28, 2013 Of course it’s not any subtraction. It’s subtracting a function from a shifted version of itself. Still doesn’t sound like a universal revolution. (But of course the...

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Tutorial- Building Biological Networks

April 4, 2013
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Tutorial- Building Biological Networks

I love networks! Nothing is better for visualizing complex multivariate relationships be it social, virtual or biological. I recently gave a hands-on network building tutorial using R and Cytoscape to build large biological networks. In these networks Nodes represent metabolites and edges can be many things, but I specifically focused on biochemical relationships and chemical

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Demographic analysis using the `popbio` library and some other fun stuff

April 4, 2013
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Demographic analysis using the `popbio` library and some other fun stuff

This week at the Davis R Users’ Group we had a great presentation by Kara Moore O’Leary on using the popbio package to examine rare plant demographics. The following is her script run through knitr. You can download the original script and associated data here. Find out more about Kara and her work at...

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