Listing gene IDs from hyperGTest

October 19, 2010
By

hyperGTest compute Hypergeomtric p-values for over or under-representation of each GO term in the specified category among the specified gene set. *geneSample* was used as an example. Read More: 1329 Words Totally

Read more »

Sunbelt workshop on SNA in R

October 19, 2010
By
Sunbelt workshop on SNA in R

The next Sunbelt Social Networks Conference (XXXI) will take place in February 2011 in St Pete Beach, Florida, USA. The preliminary program is available here. There is still time to submit abstracts (deadline is on October 29, 2010). At the conference I will be teaching the workshop “Introduction to Social Network Analysis with R”. It

Read more »

Ideas for World Statistics Day

October 19, 2010
By
Ideas for World Statistics Day

World Statistics Day is 2010 October 20.  If you work with data (or you should), then you are a statistician and this is a day for you. Try the Monte Hall problem on your mother. Start reading Bad Science.  I mean the book, but here’s the blog. Take a step towards breaking your spreadsheet addiction … Continue reading...

Read more »

NppToR 2.5.0

October 18, 2010
By

NppToR 2.5.0 supports R-2.12.0, improves saved settings and install, also retires the syntax generator.

Read more »

Hadley on a Postage Stamp?

October 18, 2010
By
Hadley on a Postage Stamp?

Yet another reason to check out the ggplot2 wiki!

Read more »

Hadley on a Postage Stamp?

October 18, 2010
By
Hadley on a Postage Stamp?

Yet another reason to check out the ggplot2 wiki!

Read more »

K-Means Redistricting

October 18, 2010
By
K-Means Redistricting

U.S. Congressional districts are today drawn with the aim of maximizing the electoral advantage of the state’s majority party, subject to some constraints, including compactness (which can be measured in numerous ways) and a “one person, one vote” standard. What if, instead of minimizing population variance across districts, we aimed to minimize the mean distance between … Continue reading →

Read more »

RProtoBuf 0.2.1

October 18, 2010
By

A fresh minor release of RProtoBuf, now at version 0.2.1, has appeared earlier today on CRAN. RProtoBuf provides GNU R bindings for the Google Protobuf data encoding library used and released by Google. This releases extends the recent 0.2.0 re...

Read more »

More Graphics with Google earth

October 18, 2010
By
More Graphics with Google earth

Dr. Paul, R graphics guru, blessed us with his rendition of transparent contour maps drawn on a google earth image: Cool stuff. I’ll be taking his code and turning it into a function and sharing it back: here is the picture his code creates: That is just plain slick.  While I was looking over his

Read more »

Cramer’s Stock Pick Recommendations Analyzed (Part II)

October 18, 2010
By
Cramer’s Stock Pick Recommendations Analyzed (Part II)

     This is the second post (previous one here) that provides an analysis of Cramer's stock recommendations based upon the Mad Money Stock Screener as of 10/15/2010.Recommendations by SegmentAs mentioned in the previous post, ...

Read more »

Cramer’s Stock Pick Recommendations Analyzed (Part II)

October 18, 2010
By
Cramer’s Stock Pick Recommendations Analyzed (Part II)

     This is the second post (previous one here) that provides an analysis of Cramer's stock recommendations based upon the Mad Money Stock Screener as of 10/15/2010.Recommendations by SegmentAs mentioned in the previous post, ...

Read more »

The curious case of Oct-Jan NG spreads

October 18, 2010
By
The curious case of Oct-Jan NG spreads

Winners of 2010 ggplot2 case study competition

October 18, 2010
By
Winners of 2010 ggplot2 case study competition

The winners of this year's ggplot2 case study competition have been announced. I was honoured to be asked to be a judge of the competition this year, but it was a difficult job with so many excellent entries. In the end, the judging panel (which included Heike Hoffman and Hadley Wickham and me) selected three entries which each demonstrated...

Read more »

New Housedata release with October 2010 filings.

October 18, 2010
By

The latest Offensive Politics Housedata file has been released. This file covers 51,463 individual electronic FEC filings for US House committees from 2001 to 10/18/2010.

Read more »

Welcome Rumpel!

October 18, 2010
By

Ladies and gentlemen, waiting is finally over. I'm proud to introduce Rumpel!

Read more »

The BMS Add-ons Section

October 18, 2010
By

This section will be updated irregularly with pages on applications of BMS. It intends to concentrate on two things: Some add-on code to extend the functionality of BMS in a certain direction, such as e.g. BMA and spatial filtering Usage of BMS to re...

Read more »

Fast matrix multiplication in R: Strassen’s algorithm

October 18, 2010
By

I tried to implement the Strassen's algorithm for big matrices multiplication in R.Here I present a pdf with some theory element, some example and a possible solution in R.I'm not a programmer, so the function is not optimize, but it works.I want to th...

Read more »

Fast matrix multiplication in R: Strassen’s algorithm

October 18, 2010
By

I tried to implement the Strassen's algorithm for big matrices multiplication in R.Here I present a pdf with some theory element, some example and a possible solution in R.I'm not a programmer, so the function is not optimize, but it works.I want to th...

Read more »

American TV does cointegration

October 18, 2010
By
American TV does cointegration

Fringe provides an excellent example of cointegration.  This is a television show in which there are two adjacent universes.  The universes are almost alike but not exactly. Now, everyone knows that history is chaotic.  If a butterfly does an extra flap of its wings, then that difference spreads out to change subsequent events everywhere.  But … Continue reading...

Read more »

Giss Nightlights Replicated

October 18, 2010
By
Giss Nightlights Replicated

UPDATE: holy open source to the rescue. I posted a question yesterday on a idea peter had. Transaprency for overlaying light maps onto google maps. reminds me of the old Quake days. Well, I know John Carmack, John is an old friend of mine, but I’m no John Carmack. Neither am I Dr Paul Murrell.

Read more »

On the Gory Loops in R

October 17, 2010
By

his blog post is mainly for Stat 579 students on the homework for week 7, since I received too many “gory” loops in the homework submissions and I think it would help a bit to write my thoughts on R loops for beginners. The immortal motto for newbies in programming is: If you want to

Read more »

Getting arm and lme4 running on the Mac

October 17, 2010
By

Our "arm" package in R requires Doug Bates's "lme4" which fits multilevel models. lme4 is currently having some problems on the Mac. But installation on the Mac can be done; it just takes a bit of work. I have two...

Read more »

Generating graphs of retweets and @-messages on Twitter using R and Gephi

October 17, 2010
By
Generating graphs of retweets and @-messages on Twitter using R and Gephi

After recently discovering the excellent methods section on mappingonlinepublics.net, I decided it was time to document my own approach to Twitter data. I’ve been messing around with R and igraph for a while, but it wasn’t until I discovered Gephi that things really moved forward. R/igraph are great for preprocessing the data (not sure how

Read more »

Le Monde puzzle [41]

October 17, 2010
By
Le Monde puzzle [41]

The current puzzle in Le Monde this week is again about prime numbers: The control key on a credit card is an integer η(a) associated with the card number a such that, if the card number is c=ab, its key η(c) satisfies η(c)=η(a)+η(b)-1. There is only one number with a key equal to 1 and

Read more »

R-bloggers for other languages – wanna join?

October 17, 2010
By
R-bloggers for other languages – wanna join?

Hello everyone. Recently I’ve been toying with the idea of extending R-bloggers to other languages then English.  After running some checks, I believe it is possible to do (under a sub website inside R-bloggers.com), where people would be able to follow R content on a “language category” of their choosing. Such a project could help map out all the...

Read more »

RPostgreSQL 0.1-7

October 17, 2010
By

After a somewhat long hiatus, RPostgreSQL version 0.1-7 has now been released to CRAN. RPostgreSQL connects R to PostgreSQL database systems using the standard DBI interface. This version fixes a number of issues that had been compiled in the issu...

Read more »

Boundary conditions Dominate

October 16, 2010
By
Boundary conditions Dominate

In part 1 and part 2 we went over the background of nightlights and the fundamental problem: Station inventory data had errors in it: In Hansen 2010, Hansen writes: “ Station location in the meteorological data records is provided with a resolution of 0.01 degrees of latitude and longitude, corresponding to a distance of about 1

Read more »

2010 ggplot2 Case Study Competition Winners

October 16, 2010
By

The 2010 ggplot2 Case Study Competition Winners have been announced!  Congratulations to the winners!Grand Prize: David Kahle, Rice UniversityFinalist: Michael Lavine, UMass Amherst Finalist: Claudia Beleites, TU Dresden & Uni....

Read more »

2010 ggplot2 Case Study Competition Winners

October 16, 2010
By

The 2010 ggplot2 Case Study Competition Winners have been announced!  Congratulations to the winners!Grand Prize: David Kahle, Rice UniversityFinalist: Michael Lavine, UMass Amherst Finalist: Claudia Beleites, TU Dresden & Uni....

Read more »