Monthly Archives: December 2009

malapportionment in the U.S. Senate

December 23, 2009
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malapportionment in the U.S. Senate

The 40 Republican senators currently in the U.S. senate represent 36% of the U.S population. See the graph below (click on the thumbnail for PDF). This is something I’ve been meaning to compute for a while now, mapping the cumulative distribution of senators’ ideal points onto the cumulative distribution of state population (each state counts

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The Life Scientists at FriendFeed: 2009 summary

December 23, 2009
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The Life Scientists at FriendFeed: 2009 summary

It’s Christmas Eve tomorrow and so I declare the year over. My Christmas gift to you is a summary of activity in 2009 at the FriendFeed Life Scientists group. It’s crafted using R + Ruby, with raw data and some code snippets available. If you want to see the most popular items from the group

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RInside release 0.2.0

December 22, 2009
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RInside, a set of convenience classes to facilitate embedding of R inside of C++ applications, was updated to release 0.2.0 over the weekend. Sources as well as binary packages are at CRAN; sources are also at my RInside page The biggest news is t...

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Multilevel and Longitudinal Modeling in Stata

December 22, 2009
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For my "off-task" reading I recent perused an excellent book on multilevel and longitudinal modeling in Stata by Sophia Rabe-Hesketh and Anders Skrondal. The second edition (which I read) has been updated by including several chapters providing an over...

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Visualizing Unemployment in Mexico

December 22, 2009
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Visualizing Unemployment in Mexico

What has been the impact of the economic crisis on employment? And how has it affected the different regions of Mexico? To answer the questions the first step was to obtain the unemployment data from the Banco de Información Económica at the INEGI. ...

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CPP package: exposing C++ objects

December 22, 2009
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I've just started working on the new package CPP, as usual the project is maintained in r-forge. The package aims at exposing C++ classes at the R level, starting from classes from the c++ standard template library. key to the package is the CPP f...

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Forecasting the weather with R

December 22, 2009
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Forecasting the weather with R

The US National Centers for Environment Prediction (NCEP) produces weather forecasts for the entire world from a model that's updated every 6 hours. The data is made freely available, and with a couple of free tools to convert the data and R you can easily produce am unpdated global weather forecast like this (click to enlarge): (Check out the...

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Singapore, February 19-20: Computational Topics in Finance

December 21, 2009
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With all of the winter snows in the US this weekend, a trip to equatorial climes sounds pretty good right about now. That makes this email announcement from Rmetrics leader Diethelm Wuertz all the more tempting: Conference on 'Computational Topics in Finance' February 19/20, 2010, National University of Singapore Dear R/Rmetrics Community, We would like to announce the first...

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Animation video of rgl in action

December 21, 2009
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Duncan Murdoch just posted a youtube video presenting an animation clip of a 3d rgl object. Duncan even went further and wrote an explanation on how he made the video: here are the steps I used: 1.  Design a shape to be displayed, and then play with the animation functions to make it change over time.  Use play3d to do

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MCMCglmm

December 21, 2009
By
MCMCglmm

This R packages estimates Generalised Linear Mixed Models via MCMC. It provides a number of random error distributions and can be used for multivariate multilevel models (simultaneous equation model).I will do some tests and compare the results to othe...

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