New R User Group in Slovenia

July 20, 2010
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The new R User Group in Ljubljana, Slovenia is giving the Sydney group a run for the money when it comes to the best user group name. It's called Anonymous Rcoholics -- great name! You can join the group at the link below. Discussions are in English and Slovene. Google Groups: Anonymous Rcoholics

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userR! 2010 Videos to be Hosted at Rchive

July 20, 2010
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Today, I am packing up the car and heading south to my old home, Washington, DC, for the useR! 2010 conference, which is being held at the National Institute of Standards and Technology. Incidentally, where I was an intern in the Information Technology Lab during college. If you are not able to make the trip to

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Analysing the ISMB 2010 meeting using R

July 20, 2010
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Analysing the ISMB 2010 meeting using R

The colossus of bioinformatics meetings, ISMB, convened in Boston this year from July 9 – 13. As in recent years, the meeting was covered online at its website, FriendFeed and Twitter. I thought it would be fun to run a quick analysis of activity at the FriendFeed room using R. 1. Fetch the data We

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The wonderful world of vim

July 20, 2010
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The wonderful world of vim

When searching for a way to recover control carriage return symbols ^M into genuine ones (under vim), I found this handy page of vim tips. And then saw that the enthusiastic author had even a blog about vim! Obviously, this post will be meaningless for all readers not aware of the joys of the vim

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R: Clash of the cannon cycles

July 19, 2010
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R: Clash of the cannon cycles

Imagine a unit square. Every side has length 1, perfectly square. Now imagine this square was really a fence, and you picked two spots at random along the fence, with uniform probability over the length of the fence. At each of these two locations, set down a special kind of cannon. Just like the light

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Indian state population plot

July 19, 2010
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Indian state population plot

Here's a quick R plot of population in Indian states and the breakdown by the religion people practice. The data was obtained from this Indian government site. I'm looking for other state-level data to overlay on this to find interesting patterns e.g....

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Analyze Online R User Conference Data

July 19, 2010
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Analyze Online R User Conference Data

The R User Conference 2010 will be underway shortly - and what better way to commemorate the event than to  blast out some R code related to the conference?  HTML tables on websites for the past three years list participants an...

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R Beginner’s Guide Book Update 7/19/2010

July 19, 2010
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R Beginner’s Guide Book Update 7/19/2010

Update: Statistical Analysis with R is now available!I am excited to announce that I have submitted the entire first draft of my R Beginner's Guide book, which is to be published through Packt. The tenth and final chapter was submitted a full month ahe...

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R Beginner’s Guide Book Update 7/19/2010

July 19, 2010
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R Beginner’s Guide Book Update 7/19/2010

Update: Statistical Analysis with R is now available!I am excited to announce that I have submitted the entire first draft of my R Beginner's Guide book, which is to be published through Packt. The tenth and final chapter was submitted a full month ahe...

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Welcome to Gosset’s student

July 19, 2010
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Welcome to Gosset’s student

Welcome to Gosset’s student, a blog about statistics, with a focus on using R.  We’re all learning R, as it’s constantly being improved.  The blog will aim for brevity, and a focussed approach to getting some stats done, rather than elegance of code.  Discussions which show how to replicate the result in a more elegant fashion, or

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Creating a Presentation with LaTeX Beamer – Boxes

July 19, 2010
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Creating a Presentation with LaTeX Beamer – Boxes

We can add coloured boxes with text or mathematics into a LaTeX beamer presentation which is particularly useful if we have definitions, theorem or computer code to highlight this information that may not be so accessible within a paragraph of text. Fast Tube by Casper The easiest way to create a box is to use the various

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New StackOverflow site for Statistics

July 19, 2010
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Since launching StackOverflow.com as a Q&A forum for programmers, the StackExchange network is now launching about three new sites a week on topics as specialized as cooking, jobs, and many many more. There's a well-defined, community-oriented process for setting up a new site: first it must be proposed, and then enough potential users must commit to the site and...

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Using R for Data Management, Statistical Analysis and Graphics soon to start shipping

July 19, 2010
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Using R for Data Management, Statistical Analysis and Graphics soon to start shipping

Our newest book, Using R for Data Management, Statistical Analysis and Graphics, is anticipated to soon start shipping from Amazon, CRC Press, and other fine retailers. The book complements our existing SAS and R book, particularly for users less inte...

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Flexmix taks long time…

July 19, 2010
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Flexmix taks long time…

I am running a mixture logit model on a sample of 10,000 cases. The model takes a long time (3-4 hours) to run, which makes it nearly impossible to try different specifications and such. It probably makes sense to use a subsample for exploratory analys...

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Npmlreg and Flexmix

July 18, 2010
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Npmlreg and Flexmix

In my attempt to estimate a mixture regression model for the long-term impact of prenatal famine exposure, I compared results obtained from NPMLREG and Flexmix using the "rainfall" data set came with the package "forward" and was able to achieve identi...

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Join the Statistical analysis Q&A beta

July 18, 2010
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Join the Statistical analysis Q&A beta

Statistical Analysis Q&A is a web page dedicated to exchange questions, answers and ideas primarily on statistics.

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Cherry Picking to Generalize ~ retrospective meta-power analysis using Cohen’s f^2 of NASA temp + visualization

July 17, 2010
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Cherry Picking to Generalize ~ retrospective meta-power analysis using Cohen’s f^2 of NASA temp + visualization

Previously, I plotted a grid of NASA GISS global temps in ggplot2 to show general trends by the brute force method. Here, I will again use the brute force method to do a simple power analysis on a portion of the data (data here). The general aim is to figure out what the minimum sample

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Latent variable analysis package for R

July 17, 2010
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Latent variable analysis package for R

This is another R package for latent variable analysis. I hope it can soon include multilevel and mixture modeling capacity. Another promising package is OpenMx, which is also under active development and very promising. At this moment, OpenMx seems to...

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What (Search Engines Think) People Want

July 17, 2010
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What (Search Engines Think) People Want

R O How G8 U R!Hey, R U there? Having used the R language for awhile now, I would like to let you know that R works - in fact R works really well. If you keep up with R news this should be no surprise...this is, after all...an r blog! R and R alone c...

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CoRe in CiRM [end]

July 17, 2010
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CoRe in CiRM [end]

Back home after those two weeks in CiRM for our “research in pair” invitation to work on the new edition of Bayesian Core, I am very grateful for the support we received from CiRM and through it from SMF and CNRS. Being “locked” away in such a remote place brought a considerable increase in concentration

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Distorting the Electoral Connection? Partisan Representation in Confirmation Politics

July 17, 2010
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John Kastellec, Jeff Lax, and Justin Phillips write: Do senators respond to the preferences of their states' median voters or only to the preferences of their co-partisans? We study responsiveness using roll call votes on te...

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More StackExchange sites

July 16, 2010
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More StackExchange sites

The StackExchange site on Statistical Analysis is about to go into private beta testing. This is your last chance to commit if you want to be part of the private beta testing. Don’t worry if you miss out — it will only be a week before it is then open to the public. There is

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Documenting R‘s Connections Internals

July 16, 2010
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Documenting R‘s Connections Internals

In studying R‘s connections source code, I’ve put together a series of notes about their workings. Rather than let the notes go where most of my notes go (I have no idea ), I decided to do some proofreading and make the notes available to others who might be interested. These notes should make the

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Starting an EC2 Machine Then Setting Up a Socks Proxy… From R!

July 16, 2010
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Starting an EC2 Machine Then Setting Up a Socks Proxy… From R!

I do some work from home, some work from an office in Chicago and some work on the road. It’s not uncommon for me to want to tunnel all my web traffic through a VPN tunnel. In one of my previous blog posts I alluded to using Amazon EC2 as a way to get around

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In case you missed it: June Roundup

July 16, 2010
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Wow, is it the middle of July already? Anyway, in case you missed them, here are some articles from June of particular interest to R users. We noted that the program for the annual R user conference, useR! 2010, has been announced. (I and the rest of the Revolution team are looking forward to seeing all the R folks...

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Because it’s Friday: Analytics of an Engagement

July 16, 2010
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Because it’s Friday: Analytics of an Engagement

The always-interesting R blogger and political scientist Drew Conway -- and self-styled luckiest man on earth -- just announced some very happy news: he just got engaged to his future wife! Congratulations, Drew! (Drew proposed the traditional way, on a lovely European vacation. But if he'd just held off a couple of days he could have proposed via towel-clad...

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Generating Balanced Incomplete Block Designs (BIBD)

July 16, 2010
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The Balanced Incomplete Block Design (BIBD) is a well studied experimental design that has various desirable features from a statistical perspective. The crossdes package in R provides a way to generate a block design for some given parameters and test wheter this design satisfies the BIBD conditions. For a BIBD there are v treatments repeated r

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Want to join the closed BETA of a new Statistical Analysis Q&A site – NOW is the time!

July 16, 2010
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The bottom line of this post is for you to go to: Stack Exchange Q&A site proposal: Statistical Analysis And commit yourself to using the website for asking and answering questions. (And also consider giving the contender, MetaOptimize a visit) * * * * Statistical analysis Q&A website is about to go into BETA A month ago I invited...

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Rcpp 0.8.4

July 15, 2010
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Romain and I wrapped up release 0.8.4 of Rcpp last Friday. However, given the time of year, it only appeared on CRAN this morning, and then only after some prodding as CRAN processing is more or less closed this week and probably next. This release bu...

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