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Monthly Archives: August 2010

Using XML package vs. BeautifulSoup

August 31, 2010
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Using XML package vs. BeautifulSoup

A while back I posted something about scraping a webpage using the BeautifulSoup module in Python. ?One of the comments to that post was by Larry — a blogger over at IEORTools — suggesting that I take a look at … Continue reading →

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Better than Average

August 31, 2010
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Better than Average

The NIST's?The Engineering Statistics Handbook?includes?an?Introduction to Time Series Analysis?which?provides a great way of demonstrating how R can be used to make such calculations. ?This post replicates the analys...

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apply functions in R

August 31, 2010
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Getting to know the "apply"s in R is extremely handy for using the language efficiently and effectively. Unfortunately, the help files tend to be rather information-dense and are fairly overwhelming for newcomers. A recent blog post by Neil Saunders pr...

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Birds of a feather shop together

August 31, 2010
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Birds of a feather shop together

PREDICTING CONSUMER BEHAVIOR FROM SOCIAL NETWORKS This week, Decision Science News is doing a special cross-posting with Messy Matters. The post below is by Sharad Goel and describes work that he and your Decision Science News editor Dan Goldstein are jointly undertaking at Yahoo! Do you know what the #$*! your social media strategy is?

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R is indispensable, because it’s reproducible

August 31, 2010
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Maria Wolters, self-styled "Science-Mum of two" and speech and language technology researcher, has a great blog post about the one tool she couldn't live without: R. Maria says R is her "favourite tool for analysing experimental results and modelling the resulting patterns of behaviour and preferences", and explains why: R is a programming language for everything statistical. It’s free,...

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Soil Properties Visualized on a 1km Grid

August 31, 2010
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Soil Properties Visualized on a 1km Grid

Fresno Area Urban Areas vs Irrigated LCC: grey regions are current urban areas A couple of maps generated from a 1km gridded soil property database, derived from SSURGO data where available with holes filled with STATSGO data. Soil properties visualize...

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Namespaces and name conflicts

August 31, 2010
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Namespaces and name conflicts

R packages ‘igraph’ and ‘network’ are good examples of two R packages providing similar but complementary functionalities for which there are a lot of name conflicts. As for now the ‘igraph’ package has a namespace while the ‘network’ package (version 1.4-1) does not. This became an issue when I was working on the ‘intergraph‘ package.

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Writing my Thesis – Follow me on Twitter

August 31, 2010
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A few weeks ago I suddenly reached the point that every graduate student once thought would never come - time to start writing my thesis. With a blank page and a blinking cursor staring me in the face it's time to compile all of my published and unpubl...

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Even Simpler Multivariate Correlated Simulations

August 31, 2010
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Even Simpler Multivariate Correlated Simulations

So after yesterday’s post on Simple Simulation using Copulas I got a very nice email that basically begged the question, “Dude, why are you making this so hard?” The author pointed out that if what I really want is a Gaussian correlation structure for Gaussian distributions then I could simply use the mvrnorm() function from

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Zurich 2010: R Course for Students

August 31, 2010
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(This article was first published on Rmetrics blogs, and kindly contributed to R-bloggers) To leave a comment for the author, please follow the link and comment on their blog: Rmetrics blogs. R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: Data science, Big Data, R jobs, visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave,...

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