Monthly Archives: October 2009

Adventures with Comcast: Part ohnoesnotanotherone in an ongoing series

October 31, 2009
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Regular readers of this blog (yes, both of you!) may remember the computer/broadband/ directory that this post appears in as the collection of my Comcastic (yeah right) experiences with my ISP. But I think this week may top everything. I'll just...

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Sorting a matrix/data.frame on a column

October 30, 2009
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Sorting a matrix/data.frame on a column

mat.sort <- function(mat,n) { mat),] <- mat return(mat) } a <- matrix(rnorm(100),ncol=10) mat.sort(a,1)

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useR! 2006

October 30, 2009
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Last week, I attended the 2006 UseR! conference: here is a (long) summary of some of the talks that took place in Vienna -- since there were up to six simultaneous talks, I could not attend all of them... In this note: 0. General remarks 1. Tutorial:...

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R graphics

October 30, 2009
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R graphics

I just finished reading Paul Murrel's book, "R graphics". There are two graphical systems in R: the old ("classical" -- in the "graphics" package) one, and the new ("trellis", "lattice", "grid" -- in the "lattice" and "grid" packages) one. The first...

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The grammar of graphics (L. Wilkinson)

October 30, 2009
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The grammar of graphics (L. Wilkinson)

Though this book is supposed to be a description of the graphics infrastructure a statistical system could provide, you can and should also see it as a (huge, colourful) book of statistical plot examples. The author suggests to describe a statistical...

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Statistics with R

October 30, 2009
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I have just uploaded the new version of my "Statistics with R": http://zoonek2.free.fr/UNIX/48_R/all.htmlThe previous version was one year and a half old, so in spite of the fact I have not had much time to devote to it in the past two years, it might...

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Use R 2009 Conference

October 30, 2009
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Use R 2009 Conference

I did not attend the conference this year, but just read through the presentations. There is some overlap with other R-related conferences, such as R in Finance or the Rmetrics workshop. http://www.agrocampus-ouest.fr/math/useR-2009/ http://www.rinfin...

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Decimal log scale on a plot

October 30, 2009
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Decimal log scale on a plot

R only does natural (neperian) log scales by default, and this is lame. Here is a simple code to do decimal log scale, pretty much a requirement for scientists… The force(x/y)lim options works for natural and log scales (for the later case, you need to specify the power of 10 that you want : c(-2,2)

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Long R, Short Excel

October 29, 2009
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Long R, Short Excel

R is very speedy statistical package that's like an F-18A Hornet, versus Excel which is like a paper airplane. R is professional sports, Excel is Pop Warner. R is Mona Lisa, Excel is stick figures. R is ... okay, you get the idea. I'm long R, and short...

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Income inequality and partisan voting in the United States

October 29, 2009
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Lane Kenworthy, Yu-Sung Su, and I write: Income inequality in the United States has risen during the past several decades. Has this produced an increase in partisan voting differences between rich and poor? We examine trends from the 1940s thr...

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