Blog Archives

Digitizing data from old plots using ‘digitize’

June 23, 2011
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The June 2011 issue of The R Journal contains an article on the R package digitize (link to pdf) by Timothée Poisot. This might prove to be a handy tool if you occasionally find yourself needing to retrieve data points from figures in old articles for...

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One minor detail for getting 64-bit R-2.13 running with Eclipse/StatET

May 9, 2011
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Upgrading from R-2.12 to R-2.13 was fairly painless, except for one minor hiccup in trying to get the 64-bit version running on my installation of Eclipse + StatET under Windows 7. The setup instructions are almost entirely the same as I have outlined ...

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Extracting sea surface temperatures from NOAA’s OISSTv2

March 1, 2011
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NOAA’s Physical Sciences Division produces a global map of weekly averaged sea surface temperatures, derived from satellite sources. The data can be found at http://www.esrl.noaa.gov/psd/data/gridded/data.noaa.oisst.v2.html. I’ve put togeth...

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RStudio – another integrated development environment for R

February 28, 2011
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If you’re in the market for a very easy-to-setup integrated development environment for R, wander over to RStudio.org. They’ve just released a beta version of their freely-available front end for R that runs under Windows, Linux and Mac OS ...

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Converting MATLAB and R date and time values

February 20, 2011
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For some unknown reason, MATLAB codes its date/time values as the number of elapsed days starting from January 1 in the year 0000. R uses the equally arbitrary, but much more widespread POSIX/Unix epoch as a reference for time keeping, so that R’...

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Accessing NOAA tide data with R

February 18, 2011
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Here's some R code that can be used to download archived tide height data from NOAA's CO-OPS OPeNDAP server. The code makes use of RCurl to send a URL query to the server, and then splits apart the resulting data into a data frame.

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A lightweight object browser for R

January 15, 2011
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Get access to a simple object browser in R so that you can see what variables, data frames, model objects and other junk you have in memory currently. If you don't want to install a full-fledged integrated development environment, this option may be fo...

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Book Review: Mixed Effects Models and Extensions in Ecology with R

January 14, 2011
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A brief review of Zuur et al.'s book "Mixed Effects Models and Extensions in Ecology with R".

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Book Review: A Beginner’s Guide to R

December 29, 2010
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A review of Zuur et al.'s "A Beginner's Guid to R". This book quickly and efficiently introduces you to the peculiarities of the R programming language so that you can soon move on to what you actually want to use R for.

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Book Review: R in a Nutshell

December 29, 2010
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A brief review of R in a Nutshell by Joseph Adler. This book continues to serve as a useful reference that sits on my desk next to my computer, waiting to tell me the name of that command I've just forgotten.

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