# Monthly Archives: September 2013

September 27, 2013
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One of the more common ways that I read vector data into R is via shapefiles.  I tend to use these partly becuase of my own sordid past with Arc/INFO, ArcView and ArcGIS and partly due to their ubiquity.  In any event I have found the R package, rgdal, indespensible for this.  One of the

## Google Summer of Code experiences

September 27, 2013
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In the followings you could hopefully read an enjoyable summary about my summer. Instead of going out regularly, like in the years before, I spent the majority of my time on R package-development. Before that change obviously there were some previous signs which showed me, life is not what it was before. I don't want to land on a...

## Logistic regression and categorical covariates

September 26, 2013
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A short post to get back – for my nonlife insurance course – on the interpretation of the output of a regression when there is a categorical covariate. Consider the following dataset > db = read.table("http://freakonometrics.free.fr/db.txt",header=TRUE,sep=";") > tail(db) Y X1 X2 X3 995 1 4.801836 20.82947 A 996 1 9.867854 24.39920 C 997 1 5.390730 21.25119 D 998 1...

## Perform a Function on Each File in R

September 26, 2013
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Sometimes you might have several data files and want to use R to perform the same function across all of them. Or maybe you have multiple files and want to systematically combine them into one file without having to open each file and manually copy the...

## R 3.0.2 and RStudio 0.9.8 are released!

September 26, 2013
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R 3.0.2 (codename “Frisbee Sailing”) was released yesterday. The full list of new features and bug fixes is provided below. Also, RStudio v0.98 (in a “secret” preview) was announced two days ago with MANY new features, including: Amazing new debugging …Read more »

## Direction of Change Forecasting III: One Signal, Many Markets

September 26, 2013
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In the global economic landscape, national borders have become increasingly blurred. Local economies depend on competitively priced global inputs and on well functioning and prosperous global markets for their exports. This interdependency also means that as a system, a crisis in one area quickly spreads to others areas like a ripple spreading outwards. And sometimes

## Revolution’s 2014 R User Group Sponsorship Program Begins October 1st!

September 26, 2013
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by Joseph Rickert On October 1st, Revolution Analytics opens the 2014 season for sponsoring R user groups. Over the past few months we have seen quite a few new user groups start up and we expect the trend to continue into 2014. We hope that our 2014 sponsorship program will help to sustain the momentum.The following figure shows the...

## Ode to Systematic Clusters

September 25, 2013
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Extending the d3 remixes of the fine work at Systematic Investor, I thought it woud be fun to do some dimple.js and nvd3 scatterplots of clusters of PIMCO mutual funds.  As always, I welcome thoughts, comments, and suggestions.  Click here or...

## R 3.0.2 "Frisbee Sailing" now available

September 25, 2013
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The latest update to the open source R project, R 3.0.2, is now available. This incremental update, codenamed "Frisbee Sailing", mainly fixes some minor bugs, improves the organization of the distribution, improves performance in some areas, and adds a few small features (see the NEWS file for a complete list). There's also new documentation on how to use R...