Monthly Archives: September 2012

Browse the in-development R sources at GitHub

September 28, 2012
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As an open-source project, the R source code has always been available to download from the R-project website. You can find source code for the latest released version here, and for the changing-daily new version in progress (R-devel) here. But if you don't have the R sources handy, and just want to check on the contents of a file...

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Second Milano R net meeting

September 28, 2012
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Second Milano R net meeting took place on September, 27. More than thirty R users joining both the presentations session and the open bar. If you attended the meeting, please leave a comment in the page of the meeting. You … Continue reading →

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Photos of the second Milano R net meeting

September 28, 2012
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Photos of the second Milano R net meeting

Photos of the second Milano R net meeting Milano; September 27, 2012

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Optimal seriation for your matrices

September 28, 2012
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Optimal seriation for your matrices

In our previous post, we used a quick-and-dirty method for ordering the axes on our heatmap. It has been pointed out to me that There is a Package for That (which is my nominee for a new slogan for R — not that it needs a slogan). seriation offe...

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Presentations of the second Milano R net meeting

September 28, 2012
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Welcome presentation Andrea Spanò, Partner at Quantide (download PDF, 3.0 MB) Introduction to the next Italian BioR event at PTP Andrea Pedretti, Parco Tecnologico Padano (download PDF, 0.2 MB) Applications of technical risk assessment in Food Industry by R Carlo … Continue reading →

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Reading and Text Mining a PDF-File in R

September 27, 2012
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Reading and Text Mining a PDF-File in R

I just added this R-script that reads a PDF-file to R and does some text mining with it to my Github repo..

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3-D animation of the changing Antarctic ice sheet

September 27, 2012
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Last month we shared an visualization showing the changing extent of Arctic sea-ice. This visualization by the multinational Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) switches the view to the Southern pole and takes the visualization to a whole new level, by animating it in 3-D: The amount of sea ice in the Southern Ocean surrounding...

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Histogram + Density Plot Combo in R

September 27, 2012
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Histogram + Density Plot Combo in R

Plotting a histogram using hist from the graphics package is pretty straightforward, but what if you want to view the density plot on top of the histogram? This combination of graphics can help us compare the distributions of groups.Let's use...

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Set package repositories at startup

September 27, 2012
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The below code shows how to configure the 'repos' option in R such that install.packages() etc will locate the packages without having to explicitly specify the repository.  Just add it to the .Rprofile file in your home directory (iff missing, create it). For more details, see help("Startup").local({ repos # http://cran.r-project.org/ # For a list of CRAN...

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The simplest Species Distribution Model in OpenBUGS & R

September 27, 2012
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This post demonstrates the simplest Species Distribution Model based on logistic regression for presence/absence data. I heavily simplified the example from Kéry (2010): Introduction to WinBUGS for Ecologists, Chapter 20.Read more →

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