screen in ubuntu 9.04

April 29, 2009
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screen in ubuntu 9.04

As I told in a previous post, I consider the unix tool screen essential for my work. It seems that the just released Ubuntu 9.04  contains a package that make it easier to configure and use. You can find the full story here.

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Introducing Influence.ME: Tools for detecting influential data in mixed models

April 29, 2009
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I’m highly excited to announce that influence.ME is now available. Influence.ME is a new software package for R, providing statistical tools for detecting influential data in mixed models. It has been developed by Rense Nieuwenhuis, Ben Pelzer, a...

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Google Summer of Code 2009: R / Quantlib

April 28, 2009
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With everything that has been going on of late, I have yet to mention that Khanh Nguyen, a Ph.D. student in Computer Science at U Mass / Boston, will be working with me on RQuantLib as part of the Google Summer of Code program this year. We had twenty...

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Google Summer of Code 2009: R / Quantlib

April 28, 2009
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With everything that has been going on of late, I have yet to mention that Khanh Nguyen, a Ph.D. student in Computer Science at U Mass / Boston, will be working with me on RQuantLib as part of the Google Summer of Code program this year. We had twenty-two applications to review for the R project, including three for the RQuantLib...

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2009 Chambers award winner announced

April 28, 2009
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We are pleased to announce that the judges of the Chambers Award have selected the winner of the 2009 competition: Yihui Xie, from the Renmin University of China. Yihui received this year's award for his submission "animation," an R package for using g...

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2009 Chambers award winner announced

April 28, 2009
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We are pleased to announce that the judges of the Chambers Award have selected the winner of the 2009 competition: Yihui Xie, from the Renmin University of China. Yihui received this year's award for his submission "animation," an R package for using g...

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R/Finance 2009 Overview

April 28, 2009
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R/Finance 2009 Overview

The first international R/Finance 2009 conference in Chicago, IL was a huge success! David Smith from REvolution Computing has written a great summary of the entire event. I'll take the lazy route and point you to his blog post. :)The first internati...

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Tips from the R-help list : shadow text in a plot and bumps charts

April 28, 2009
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Tips from the R-help list : shadow text in a plot and bumps charts

Stumbling across the R-help mailing-list I found, as often happens,  two threads in the spirit of this blog (of course, since they come from the list, the quality is higher): here you can find a function allowing  a shadow outline style for a...

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Review of ‘Analysis of Integrated and Cointegrated Time Series with R (2nd ed)’ in JSS

April 27, 2009
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A few weeks ago I wrote up a short review of Bernhard Pfaff's nice (but somewhat dry) Analysis of Integrated and Cointegrated Time Series with R (2nd ed) on unit root and cointegration modeling with R. This is now online at the Journal of Statistical S...

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Review of ‘Analysis of Integrated and Cointegrated Time Series with R (2nd ed)’ in JSS

April 27, 2009
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A few weeks ago I wrote up a short review of Bernhard Pfaff's nice (but somewhat dry) Analysis of Integrated and Cointegrated Time Series with R (2nd ed) on unit root and cointegration modeling with R. This is now online at the Journal of Statistical Software.

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Interesting R Packages

April 27, 2009
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  CHNOSZ Chemical thermodynamics library and activity diagram software   read more

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R / Finance 2009

April 26, 2009
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Our inaugural R / Finance conference, mentioned here twice is now over. We were fortunate to get seven outstanding invited keynote speakers, as well as eleven excellent presentations. This was preceded by four short tutorials (and I'll post slides fro...

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R / Finance 2009

April 26, 2009
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Our inaugural R / Finance conference, mentioned here twice is now over. We were fortunate to get seven outstanding invited keynote speakers, as well as eleven excellent presentations. This was preceded by four short tutorials (and I'll post slides from my Introduction to High-Performance Computing with R soon). With about 150 registered participants, plus keynoters, presenters, committee members, representatives from the sponsors (a quick shout of...

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Colors in the R terminal

April 24, 2009
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Colors in the R terminal

Today, I'd like to suggest a new R package that you can download from here. Still in its early development, the xterm256 package allows to print text in the R terminal using different colours. You can find more information here. The picture below depic...

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Real nice Boston Marathon writeup

April 23, 2009
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This article from the Boston Globe gives an excellent description of what running Boston last Monday was like, and why we keep coming back, almost regardless. The writer, for whom it was the fifth Boston and ninth total, expresses the range of emotions, expectations, frustrations, excitements, ups, downs, ... all of which form the challenge of racing a marathon in general, and...

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useR! 2009 acceptance: presenting influence.ME

April 23, 2009
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The organizing committee of the useR! 2009 conference just informed me, that my submission for presenting my extension package influence.ME, has been accepted! Influence.ME is a new R package that I’m currently developing, with the indispensable ...

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How to get ESS style indentation in textmate

April 23, 2009
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This should be standard in Textmate, I don't know why one has to go through so many steps to get it working:http://gragusa.wordpress.com/2007/11/11/textmate-emacs-like-indentation-for-r-files/

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How to get ESS style indentation in textmate

April 23, 2009
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This should be standard in Textmate, I don't know why one has to go through so many steps to get it working:http://gragusa.wordpress.com/2007/11/11/textmate-emacs-like-indentation-for-r-files/

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Boston Marathon 2009

April 22, 2009
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Monday was the 113th Boston Marathon. Just like in 2007 (and having skipped last year as I ran London the week before), I went as part of a group of local running friends. We once again had a blast---Boston on Marathon weekend is a real spectacle. Lots of people, lots of excitement, and this time even great weather. The race...

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Visulization of correlation matrix 2

April 22, 2009
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The plot.corr() function was updated, now it can1. Add colorkey and text labels more flexible.2. Reorder the variables using PCA or hierarchical clustering methods.3. Excellent in details.4. Other.What's more, I found a new method to display correlatio...

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Visulization of correlation matrix 2

April 22, 2009
By

The plot.corr() function was updated, now it can1. Add colorkey and text labels more flexible.2. Reorder the variables using PCA or hierarchical clustering methods.3. Excellent in details.4. Other.What's more, I found a new method to display correlatio...

Read more »

R 2.9.0 is Out!

April 21, 2009
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R 2.9.0 is Out!

The new R 2.9.0 is out! Get it here. If you like take a look at these posts for some miscellaneous advices to make the upgrade easier.

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Getting at the internals of R functions

April 20, 2009
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I got asked the question the other day about how to get to the internals of a function. I realized that this was not something that I had covered yet on my tips blog. read more

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opentick is no more

April 17, 2009
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opentick is no more

After a year of "we plan to accept new subscribers shortly", opentick has shut its doors completely. As of March 20th, the opentick service is no longer available.From opentick.com:3/16/2009To opentick subscribers, friends, supporters, contributors an...

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Barry3-Apdex Also Lives in R

April 17, 2009
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Barry3-Apdex Also Lives in R

As a by-product of my presentation on the Apdex Index at the NorCal CMG meeting, back in February, Guerrilla graduate, Stephen O'Connell, went off and did an implementation in R. You can read about it in this month's CMG MeasureIT and download his R-s...

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Webscraping using readLines and RCurl

April 14, 2009
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Webscraping using readLines and RCurl

There is a massive amount of data available on the web. Some of it is in the form of precompiled, downloadable datasets which are easy to access. But the majority of online data exists as web content such as blogs, news stories and cooking recipes. With precompiled files, accessing the data is fairly straightforward; just The post Webscraping...

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Webscraping using readLines and RCurl

April 14, 2009
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There is a massive amount of data available on the web. Some of it is in the form of precompiled, downloadable datasets which are easy to access. But the majority of online data exists as web content such as blogs, news stories and cooking recipes. ...

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Testing RSI(2) with R, First Steps

April 13, 2009
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Testing RSI(2) with R, First Steps

This is the first of a series of posts that will demonstrate how to build, test, and implement a trading strategy using my favorite FOSS, R. I chose the RSI(2) strategy because it has gotten considerable attention on trading blogs over the past 6 mont...

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Using partial name matching and match.arg

April 13, 2009
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Sorry it has been so long to write an R tip. I've been really busy with my research, which you would think would produce lots of tips, but apparently not. Anyway here is a little tip to look at. read more

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