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Monthly Archives: December 2009
In case you missed it: November roundup
In case you missed them, here are some articles from last month of particular interest to R users. This post demonstrated reader Paul Bleicher's code for visualizing a time series as a heat-map calendar. This post and followup showed (with thanks to Drew Conway) how to use R to perform social network analysis on live data from Twitter. This...
swfDevice: Help Wanted (Windows Build) and Outlook
swfDevice is an R package I am developing that produces swf (flash) files natively from R. If anyone can step up and help get a working windows build up and running that would be great! I have little expertise with windows and I am just about stuck as what to do next. The task involved
Using Git with R-Forge OR Adding an local Git branch to track an Subversion Repo
These instructions were originally from instructions from my friend Charlie. I really like to use Github but R-Forge has alot of nice features for package development, so why not get the best of both worlds. Say you have a git repo (with an R package or something else) but want to create a local brach
R2admb
I gave R2admb a test run and found it quite promising. The design is simple: to have a simple interface between R and ADMB so ADMB can get input from R and can send output back to R for further processing. This does not eliminate the trouble of writing...
My Five Rules for Data Visualization
Tonight the NYC R Meetup will be discussing data visualization in R using ggplot2. As part of tonight’s meeting I will be providing a very brief show and tell, which includes mostly code examples and external resources. This exercise has had me thinking quite a bit about data visualization. In addition, a
ggplot2: Overplotting In a Faceted Scatterplot
Hadley Wickham recently shared a nice tip on how to get a faceted scatterplot plot with all points in the background of each plot. This technique makes a clever use of setting the faceting variable to NULL so that all points are plotted in light grey in all the facets. > library(ggplot2) > ggplot(mtcars, aes(cyl, 
ohloh
I've been invited me to create my account on ohloh
LaTeX and Sweave
LaTeX is a typesetting language that is known for its beautiful mathematical formulas. It is similar to HTML in that you write your document in plain text and process (or compile) it to create a postscript or PDF file. You will need to download a LaTeX processor for your platform. On Windows, TeXnicCenter (http://www.texniccenter.org/) is
Design of Experiments – Full Factorial Designs
In designs where there are multiple factors, all with a discrete group of level settings, the full enumeration of all combinations of factor levels is referred to as a full factorial design. As the number of factors increases, potentially along with the settings for the factors, the total number of experimental units increases rapidly. In many
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
