Monthly Archives: February 2011

Enhancing R Graphic packages

February 12, 2011
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Enhancing R Graphic packages

This will be the last thing I’ll post prior starting to connect R with Metatrader. Indeed, as you may suspect already I use this blog as my lab-book. The following might be quite general, but it fits in my overall ambition to build a personal quant-trading architecture as professional as I can. Graphic visualization is

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Algorithmic Trading in R: Available Information

February 12, 2011
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Algorithmic Trading in R: Available Information

After digging through different blogs and info on the web I found an amazingly strong and developping community supporting R for specific applications in algorithmic trading. Thereafter I present some of the major information that I believe are essenti...

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Simulating second difference using Zelig

February 11, 2011
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I am trying to simulate second difference using Zelig, here is my code:--------------------------------------------------------data(turnout)# estimationz.out <- zelig(vote ~ race*age + educate + income,            ...

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Simulating second difference using Zelig

February 11, 2011
By

I am trying to simulate second difference using Zelig, here is my code:--------------------------------------------------------data(turnout)# estimationz.out <- zelig(vote ~ race*age + educate + income,            ...

Read more »

Where should you publish that next paper?

February 11, 2011
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Where should you publish that next paper?

Like many academics, Arthur Charpentier thinks a lot about publishing papers in journals. Specifically, we wondered if there was a way to figure out which journal was the best place to publish his next paper and have it accepted: I was wondering if there were clusters of journals, i.e. journals that publish almost the same kind of articles (so...

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UseR Meetup at Google San Francisco

February 11, 2011
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UseR Meetup at Google San Francisco

Earlier this week, Google hosted the Bay Area useR Group at our San Francisco office. Over 40 attendees showed up to hear Dylan Beaudette from UC Davis give a presentation about investigating soil genesis and geography with R (PDF). Dylan has been using...

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UseR Meetup at Google San Francisco

February 11, 2011
By
UseR Meetup at Google San Francisco

Earlier this week, Google hosted the Bay Area useR Group at our San Francisco office. Over 40 attendees showed up to hear Dylan Beaudette from UC Davis give a presentation about investigating soil genesis and geography with R (PDF). Dylan has been using...

Read more »

Rounded Corners in ggplot2 Graphics

February 11, 2011
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Rounded Corners in ggplot2 Graphics

Last night, while working on something else that I want to finish, I ended up indulging in a bit of "yak shaving". I wondered how easy it would be to generate graphics in ggplot2 with rounded corners. I don't think that there is any nativ...

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Rounded Corners in ggplot2 Graphics

February 11, 2011
By
Rounded Corners in ggplot2 Graphics

Last night, while working on something else that I want to finish, I ended up indulging in a bit of "yak shaving". I wondered how easy it would be to generate graphics in ggplot2 with rounded corners. I don't think that there is any nativ...

Read more »

Le Monde puzzle [#5]

February 10, 2011
By
Le Monde puzzle [#5]

Another Sudoku-like puzzle from the weekend edition of Le Monde. The object it starts with is a 9×9 table where each entry is an integer and where neighbours take adjacent values. (Neighbours are defined as north, west, south and east of an entry.) The question is about whether or not it is possible to find

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