Monthly Archives: January 2011

R-bloggers

January 5, 2011
By
R-bloggers

Just a quick FYI note in case you haven't seen this site.R-bloggers is an awesome site, bringing together more than 140 blogs (including mine) about R in a single location. See Tal Galili's motivation for creating the site, and his notes on the site here.

Read more »

New approach to analysis of phylogenetic community structure

January 5, 2011
By
New approach to analysis of phylogenetic community structure

Anthony Ives, of University of Wisconsin-Madison, and Matthew Helmus of the Xishuangbanna Tropical Botanical Garden, present a new statistical method for analyzing phylogenetic community structure in an early view paper in Ecological Monographs. See th...

Read more »

Adap’skiii [day 2]

January 5, 2011
By
Adap’skiii [day 2]

Another exciting day at Adap’skiii!!! Yves Atchadé presented a very recent work on the fundamental issue of estimating the asymptotic variance estimation for adaptive MCMC algorithms, with an intriguing experimental observation that a non-converging bandwidth with rate 1/n was providing better coverage than the converging rate. (I always found the issue of estimating the asymptotic

Read more »

How many gifts did my true love give to me on all twelve nights…

January 5, 2011
By

How many gifts did my true love give to me on all twelve nights of Christmas? After seeing Information is Beautiful’s recent information animation, I decided that I’d make my own. I used R to generate a PDF and then did a screencast of the PDF with ffmpeg to make a video with the appropriate timings. The code for the PDF...

Read more »

Customizing the Theme of Your R HTML Help

January 4, 2011
By
Customizing the Theme of Your R HTML Help

R’s default theme of the HTML help pages is too plain for me to read, but we can easily modify the theme, which is essentially a CSS file. You can find the file under: file.path(R.home('doc'), 'html', 'R.css') Simply replace this file with my version: which looks like: Of course you can design your own R.css

Read more »

The R Journal: December 2010

January 4, 2011
By

Issue 2 of The R Journal (the peer-reviewed journal devoted to R) was published over the Christmas break. In addition to news about the latest release of R, it also includes contributed articles on using GPU processing to fit Bayesian models in R, processing text data in R, solving differential equations in R, and much more. Follow the link...

Read more »

Revised market prediction distributions

January 4, 2011
By
Revised market prediction distributions

This provides revised plots of the prediction distributions published yesterday.  The previous plots of prediction distributions should be ignored — they are not doing as advertised. We show the prediction distribution of levels of several equity indices (plus oil price) at the end of 2011 assuming nothing happens.  That is, we’ve taken out market trends … Continue reading...

Read more »

Creating prediction distributions

January 4, 2011
By
Creating prediction distributions

Here we give details and code for the prediction distributions exhibited in yesterday’s blog post Tis the season to predict. Eight years of returns The equity indices use daily closing levels from the start of 2003.  This data comes from Yahoo. A roughly equivalent technique of selecting the last 2000 daily prices is used for … Continue reading...

Read more »

Customizing the Theme of Your R HTML Help

January 4, 2011
By
Customizing the Theme of Your R HTML Help

R's default theme of the HTML help pages is too plain for me to read, but we can easily modify the theme, which is essentially a CSS file. You can find the file under:file.path(R.home('doc'), 'html', 'R.css')Simply replac...

Read more »

How many of each gift did my true love give to me?

January 4, 2011
By
How many of each gift did my true love give to me?

How many of each gift did my true love give to me?

Read more »