Monthly Archives: January 2010

Announcing r-ORM: A Pure R Object-Relational Mapper

January 5, 2010
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My apologies for the long break between posts. Before the end of this week I’ll return to my series of posts on image processing in R. In the intervening time, I’ve finished a piece of code that I’d like to officially release to the public. The code in question is a very minimal object-relational mapper

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Analyzing a FriendFeed group with Ruby and R

January 5, 2010
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Analyzing a FriendFeed group with Ruby and R

FriendFeed is a social media service, where groups of people can post interesting information from the Web, and "like" or comment posts from others. Statistical Bioinformatician Neil Saunders is a member of the "Life Scientists" group, and has posted an analysis of the group's activity in 2009 to his blog. He used Ruby and the FriendFeed API to extract...

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R Journal 1/2

January 5, 2010
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R Journal 1/2

R Journal 1/2 is out! Grab it from here.

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R: Memory usage statistics by variable

January 4, 2010
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R: Memory usage statistics by variable

Do you need a way to find out which individual variables in R consume the most memory? # create dummy variables for demonstration x <- 1:1000 y <- 1:10000 z <- 1:100000 # print aggregate memory usage statistics print(paste('R is using', mem...

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Example 7.20: Simulate categorical data

January 4, 2010
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Example 7.20: Simulate categorical data

Both SAS and R provide means of simulating categorical data (see section 1.10.4). Alternatively, it is trivial to write code to do this directly. In this entry, we show how to do it once. In a future entry, we'll demonstrate writing a SAS Macro (section A.8.1) and a function in R (section B.5.2) to do it...

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O’Reilly’s R is a Harpy Eagle

January 4, 2010
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O’Reilly’s R is a Harpy Eagle

Today marks the hardcopy availability of the first book dedicated to R from O'Reilly, R in a Nutshell. In the familiar O'Reilly style, the cover is adorned with an illustration of an animal, in this case a harpy eagle: The book is written by Joe Adler, a data analyst and the author of Baseball Hacks. In contrast to the...

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Welcome!

January 4, 2010
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Welcome to my new blog, Byte Mining! Data is all around us, all the time. It flows in from places you would least expect it, and more times that not, it remains in its original form untouched by human and machine. When data simply flows in and out of our lives, we miss out on the story that it...

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Soical Network Analysis in R

January 3, 2010
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Presentation by Drew Conway on August 6, 2009 at the NYC R Statistical Programming Meetup on how to perform basic social network analysis in R using the igraph package.

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directlabels: Adding direct labels to ggplot2 and lattice plots

January 3, 2010
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directlabels: Adding direct labels to ggplot2 and lattice plots

Sometimes it is preferable to label data series instead of using a legend. This post demonstrates one way of using labels instead of legend in a ggplot2 plot. > library(ggplot2) > p <- ggplot(dfm, aes(month, value, group = City, colour = City)) + geom_line(size = 1) + opts(legend.position = "none") > p + geom_text(data =

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Rcpp 0.7.1

January 2, 2010
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Two weeks after the Rcpp 0.7.0 release, Romain and I are happy to announce release 0.7.1 of Rcpp. It is currently in the incoming section of CRAN and has been accepted into Debian. Mirrors will catch up over the next few days, in the meantime the local page is available for download too. A lot has...

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