pgfSweave now on CRAN

December 6, 2009
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At long last pgfSweave has finally made its way to CRAN. http://cran.r-project.org/web/packages/pgfSweave/index.html The pgfSweave R package is about speed and style of graphics. For speed, the package provides capabilities for “caching” graphics generated with Sweave on top of the caching funcitonality of cacheSweave. For style the pgfSweave package facilitates the integration of R graphics with

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Create factor variables in R

December 6, 2009
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Create factor variables in R

Instead of the factor() function which usually applies after defining a vector there’s the gl() base function to do this in one step, eg freq <- c(204,6,1,211,13,5,357,44,38,92,34,49) row <- gl(4,3,length=12) col <- gl(3,1,length=12) > col 1 2 3 1 2 3 1 2 3 1 2 3 Levels: 1 2 3 tt <- data.frame(freq,row,col) > xtabs(tt) col row   1   2   3 1 204   6  

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digest 0.4.2

December 6, 2009
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digest version 0.4.2 is now on CRAN. This new version features a fix by Henrik Bengtsson who also joined the R-Forge-hosted digest project.

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digest 0.4.2

December 6, 2009
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digest version 0.4.2 is now on CRAN. This new version features a fix by Henrik Bengtsson who also joined the R-Forge-hosted digest project.

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digest 0.4.2

December 6, 2009
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digest version 0.4.2 is now on CRAN. This new version features a fix by Henrik Bengtsson who also joined the R-Forge-hosted digest project.

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Design of Experiments – Blocking and Full Factorial Experimental Design Plans

December 6, 2009
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When considering using a full factorial experimental design there may be constraints on the number of experiments that can be run during a particular session, or there may be other practical constraints that introduce systematic differences into an experiment that can be handled during the design and analysis of the data collected during the experiment. Blocking

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The animation package

December 5, 2009
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The animation package

The "animation" package is a good teaching tool to demonstrate some key concepts in a introductory statistics course.

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Two more R related web sites

December 5, 2009
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Two more R related web sites

R bloggersFree statistics e-booksPlanet R

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R twitts…

December 5, 2009
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R twitts…

You may already know this… #rstats I think I might get an account when get to connect to the Internet in my mobile phone

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Advances in Social Science Research Using R

December 5, 2009
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Advances in Social Science Research Using R

This seems to be a book worth buying: http://www.springer.com/statistics/business/book/978-1-4419-1763-8It will come out in May 2010.

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Because it’s Friday: The Earth, with rings

December 4, 2009
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To wind down your afternoon, relax and enjoy the view from various places around the globe of the Earth's rings in the sky ... if the Earth, like Saturn, had rings subject to the Roche Limit. YouTube: What Earth Would Look Like With Rings Like Saturn

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[S. Lynch] Introduction to Applied Bayesian Statistics and Estimation for Social Scientists

December 4, 2009
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[S. Lynch] Introduction to Applied Bayesian Statistics and Estimation for Social Scientists

Well, that’s a good book that you shouldn’t miss “Introduction to Applied Bayesian Statistics and Estimation for Social Scientists”. Why you shouldn’t miss it? Coz, it’s practical and I mean p r a c t i c a l big time!!! I don’t own tons of (traditionally) printed books but that’s one of the few breaking

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How R is disrupting a billion-dollar market

December 4, 2009
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Zack Urlocker, the EVP for Products at MySQL before it was acquired by Sun (and now an executive at Sun) has written an article at InfoWorld suggesting that the recent rash of articles looking at how IBM's acquisition of SPSS is affecting the BI market dominated by SAS are downplaying the real agent of change in the space: R....

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R information

December 4, 2009
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R information

http://romainfrancois.blog.free.fr/index.php?

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In case you missed it: November roundup

December 4, 2009
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In case you missed them, here are some articles from last month of particular interest to R users. This post demonstrated reader Paul Bleicher's code for visualizing a time series as a heat-map calendar. This post and followup showed (with thanks to Drew Conway) how to use R to perform social network analysis on live data from Twitter. This...

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swfDevice: Help Wanted (Windows Build) and Outlook

December 3, 2009
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swfDevice is an R package I am developing that produces swf (flash) files natively from R. If anyone can step up and help get a working windows build up and running that would be great! I have little expertise with windows and I am just about stuck as what to do next. The task involved

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Using Git with R-Forge OR Adding an local Git branch to track an Subversion Repo

December 3, 2009
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These instructions were originally from instructions from my friend Charlie. I really like to use Github but R-Forge has alot of nice features for package development, so why not get the best of both worlds. Say you have a git repo (with an R package or something else) but want to create a local brach

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R2admb

December 3, 2009
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R2admb

I gave R2admb a test run and found it quite promising. The design is simple: to have a simple interface between R and ADMB so ADMB can get input from R and can send output back to R for further processing. This does not eliminate the trouble of writing...

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My Five Rules for Data Visualization

December 3, 2009
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My Five Rules for Data Visualization

Tonight the NYC R Meetup will be discussing data visualization in R using ggplot2. As part of tonight’s meeting I will be providing a very brief show and tell, which includes mostly code examples and external resources. This exercise has had me thinking quite a bit about data visualization. In addition, a

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ggplot2: Overplotting In a Faceted Scatterplot

December 3, 2009
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ggplot2: Overplotting In a Faceted Scatterplot

Hadley Wickham recently shared a nice tip on how to get a faceted scatterplot plot with all points in the background of each plot. This technique makes a clever use of setting the faceting variable to NULL so that all points are plotted in light grey in all the facets. > library(ggplot2) > ggplot(mtcars, aes(cyl,

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ohloh

December 2, 2009
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I've been invited me to create my account on ohloh

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LaTeX and Sweave

December 1, 2009
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LaTeX is a typesetting language that is known for its beautiful mathematical formulas. It is similar to HTML in that you write your document in plain text and process (or compile) it to create a postscript or PDF file. You will need to download a LaTeX processor for your platform. On Windows, TeXnicCenter (http://www.texniccenter.org/) is

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Design of Experiments – Full Factorial Designs

December 1, 2009
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In designs where there are multiple factors, all with a discrete group of level settings, the full enumeration of all combinations of factor levels is referred to as a full factorial design. As the number of factors increases, potentially along with the settings for the factors, the total number of experimental units increases rapidly. In many

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Get Started with Machine Learning in R

December 1, 2009
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A Beautiful WWW put together a great set of resources for getting started with machine learning in R.  First, they recommend the previously mentioned free book, The Elements of Statistical Learning.  Then there's a link to a list of dozens of machine learning and statistical learning packages for R.  Next, you'll need data.  Hundreds of free real datasets are...

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Updated slides for ‘Introduction to HPC with R’ (now with correct URLs)

December 1, 2009
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This is an updated version of yesterday's post with corrected URLs -- by copy-and-pasting I had still referenced the previous slides from UseR! 2009 in Rennes instead of last Friday's slides from the ISM presentation in Tokyo. The presentations page h...

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Updated slides for ‘Introduction to HPC with R’ (now with correct URLs)

December 1, 2009
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This is an updated version of yesterday's post with corrected URLs -- by copy-and-pasting I had still referenced the previous slides from UseR! 2009 in Rennes instead of last Friday's slides from the ISM presentation in Tokyo. The presentations page ha...

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Updated slides for ‘Introduction to HPC with R’ (now with correct URLs)

December 1, 2009
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This is an updated version of yesterday's post with corrected URLs -- by copy-and-pasting I had still referenced the previous slides from UseR! 2009 in Rennes instead of last Friday's slides from the ISM presentation in Tokyo. The presentations page had the correct URLs, and this has been corrected below for this re-post. My apologies! As mentioned yesterday, I spent a few days last week...

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OpenMX, again

November 30, 2009
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OpenMX, again

With help from Michael Spiegel, the lead developer of OpenMX, I was able to get it compiled and installed on my 64-bit Ubuntu system. Now it runs beautifully.

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An OpenSSH software for Windows 7 / Vista

November 30, 2009
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Here is an OpenSSH software I personally found useful and working well under Windows 7 / Vista.  It is copSSH. Besides it is free and open source, it is still actively maintained.  It works well with the UAC (user account control setting) of Windows...

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