Tag: R-project
-
Digitizing data from old plots using ‘digitize’
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 which you don’t have the raw data. There are…
-
Extracting sea surface temperatures from NOAA’s OISSTv2
Update, 2015-11-30 It appears that NOAA has gone through and upgraded all of the OISST files to the newer version of the NetCDF file format. As a result, the functions outlined in this post don’t work any longer. Instead, see the updated functions in my newer post, https://lukemiller.org/index.php/2014/11/extracting-noaa-sea-surface-temperatures-with-ncdf4/. The concepts are the same as described…
-
RStudio – another integrated development environment for R
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 X (for R versions 2.11 and later). If you’re not familiar with the idea of an…
-
Converting MATLAB and R date and time values
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’s POSIX time values are stored internally as the elapsed seconds since 00:00…
-
Accessing NOAA tide data with R
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.
-
Book Review: Mixed Effects Models and Extensions in Ecology with R
A brief review of Zuur et al.’s book “Mixed Effects Models and Extensions in Ecology with R”.
-
Book Review: A Beginner’s Guide to R
A review of Zuur et al.’s “A Beginner’s Guide 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.
-
Book Review: R in a Nutshell
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.
-
R 2.12.0 and Eclipse with StatET installation
A while back I outlined the setup process for running R under the Eclipse integrated development environment with the help of WalWare.de’s StatET plugin for Eclipse, in Windows 7. This post is an update on that procedure for the newer versions of each of the programs now available. Specifically, this information pertains to an installation…