Monthly Archives: August 2010

New R Package ‘aqp’: Algorithms for Quantitative Pedology [updates]

August 9, 2010
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New R Package ‘aqp’: Algorithms for Quantitative Pedology [updates]

  Soils are routinely sampled and characterized according to genetic horizons (layers), resulting in data that are associated with principal dimensions: location (x,y), depth (z), and property space (p). The high dimensionality and grouped nature...

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Installing RApache on Mac OS X Snow Leopard

August 9, 2010
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Hi Folks,for a research project I needed to install RApache on my Mac OS X 10.6.4 (Snow Leopard) machine.It did take some time, a lot of beeping in the video documentary, a lot of recompiles…Here is the way to do it:1. Install Gnu Fortran on your MacYou need to install Gnu Fortran on your Mac, because you have...

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Installing RApache on Mac OS X Snow Leopard

August 9, 2010
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Hi Folks,for a research project I needed to install RApache on my Mac OS X 10.6.4 (Snow Leopard) machine.It did take some time, a lot of beeping in the video documentary, a lot of recompiles…Here is the way to do it:1. Install Gnu Fortran on your MacYou need to install Gnu Fortran on your Mac, because you have...

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Handling Large CSV Files in R

A follow-up of my previous post Excellent Free CSV Splitter. I asked a question at LinkedIn about how to handle large CSV files in R / Matlab. Specifically, Quotationsuppose I have a large CSV file with over 30 million number of rows, both Matlab / R lacks memory when importing the data. Could you...

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Iris Data Set Visualization Web App in < 100 LOC

August 7, 2010
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Iris Data Set Visualization Web App in < 100 LOC

The iris data set pops up pretty regularly in statistical literature.  It consists of 50 records from three species of Iris flowers (Iris setosa, Iris virginica and Iris versicolor).   I came across it recently while reading

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Wikileaks Attack Data by Year and Type Projected on Afghanistan Regional Map

August 7, 2010
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Wikileaks Attack Data by Year and Type Projected on Afghanistan Regional Map

Below is a visualization of the Wikileaks data produced in collaboration with Michael Dewar. This plot shows attacks in the data set by year and type, projected onto a map of Afghanistan with district boundaries.This visualization is certainly not perfect, i.e., some colors are difficult to discern, but it does provide added insight to the

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Creating a Presentation with LaTeX Beamer – Including Images from Graphics Files

August 7, 2010
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Creating a Presentation with LaTeX Beamer – Including Images from Graphics Files

It will often be more efficient to generate graphics in an external software package and then include these files in a LaTeX beamer presentation. The standard LaTeX approach to including graphics can be utilised to perform this task. Fast Tube by Casper The graphicx is useful for including graphics files in a presentation and this package has

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Julian Besag 1945-2010

August 7, 2010
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Julian Besag 1945-2010

I have just learned that Julian Besag passed away last morning in Bristol after being admitted to the hospital two weeks ago. He was a leading figure of our field, a fiercely independent thinker, a brilliant statistician, and undoubtedly the clearest pretendent to having fathered MCMC. His influence on the field of spatial statistics will

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RInside release 0.2.3

August 6, 2010
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A new 0.2.3 release of RInside is now on CRAN. RInside is a set of convenience classes which facilitate embedding of R inside of C++ applications and programs. RInside works particularly well with Rcpp and now depends on it. This is the first release ...

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RInside release 0.2.3

August 6, 2010
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A new 0.2.3 release of RInside is now on CRAN. RInside is a set of convenience classes which facilitate embedding of R inside of C++ applications and programs. RInside works particularly well with Rcpp and now depends on it.This is the first re...

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