Monthly Archives: September 2010

Bot Botany – K-Means and ggplot2

September 2, 2010
By
Bot Botany – K-Means and ggplot2

So if you had a robot that was an expert at botany - would you have a bot botanist?  Among other things, it would need to to distinguish flowers through vision and image processing, and be able to classify various kinds of plants based upon specif...

Read more »

Bot Botany – K-Means and ggplot2

September 2, 2010
By
Bot Botany – K-Means and ggplot2

So if you had a robot that was an expert at botany - would you have a bot botanist?  Among other things, it would need to to distinguish flowers through vision and image processing, and be able to classify various kinds of plants based upon specif...

Read more »

New R User Group in New Jersey

September 2, 2010
By

Folks in the New Jersey area no longer need to trek over to New York City to meet other R users. Now there's NewJerseyR, a new R user group put together by Mango Solutions. The first meeting will in Iselin on September 16, with speakers from Mango, Pfizer, and Bristol Myers Squibb. Full details at the NewJerseyR website, linked...

Read more »

Statisfaction

September 2, 2010
By
Statisfaction

A collective blog has been started by the statistics students and postdocs at CREST, in the wake of the Valencia meeting. It is called Statisfaction. (The Rolling Stones of Statistics?! Actually, Andrew Gelman also has a post with that title… And it is even part of the Urban Dictionnary!) Since I have no responsability nor

Read more »

Update

September 2, 2010
By
Update

I tried using my own little palette with more traditional looking heatmap colors (red and pink are the densest, blue and green are less so, yellow in the middle, etc.). I also included the actual points, but would recommend it for more than a single g...

Read more »

How the expiration of the assault weapon ban affected Mexico

September 2, 2010
By
How the expiration of the assault weapon ban affected Mexico

There has been a lot of attention paid to the role of US guns exacerbating the violence in Mexico. The assault-weapon ban expired on September 14, 2004, but with the recent spiraling of violence in Mexico the ban has attracted renewed attention. Just recently the Mexican President stood before the American Congress and blamed the assault weapon...

Read more »

How the expiration of the assault weapon ban affected Mexico

September 2, 2010
By
How the expiration of the assault weapon ban affected Mexico

There has been a lot of attention paid to the role of US guns exacerbating the violence in Mexico. The assault-weapon ban expired on September 14, 2004, but with the recent spiraling of violence in Mexico the ban has attracted renewed attention. Just recently the Mexican President stood before the American Congress and blamed the assault weapon...

Read more »

R-bloggers announcement – maintenance mode – site might be down

September 2, 2010
By

Hello dear followers of R-bloggers.com Today (and probably in the next few days), R-bloggers will be down part of the time due to maintenance work. (Technical stuff: I am moving the site from shared hosting to VPS, and there seem to be a few bumps in the road) Sorry for the inconvenience, I will update once it would look...

Read more »

Third, and Hopefully Final, Post on Correlated Random Normal Generation (Cholesky Edition)

September 2, 2010
By
Third, and Hopefully Final, Post on Correlated Random Normal Generation (Cholesky Edition)

When I did a brief post three days ago I had no plans on writing two more posts on correlated random number generation. But I’ve gotten a couple of emails, a few comments, and some Twitter feedback. In response to my first post, Gappy, calls me out and says, “the way mensches do multivariate (log)normal

Read more »

Stochastic approximation in Bristol

September 2, 2010
By
Stochastic approximation in Bristol

This is very short notice, but for those in the vicinity and not at the RSS conference, there is a highly interesting workshop taking place in Bristol in ten days (I would certainly have gone, had I not been at the same time in Banff!): We would like to invite you to contribute to our

Read more »