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
Lately, David Smith from REvolution Computing set out to challenge the R community with the reprocuction of a beautiful choropleth map (= multiple regions map/thematic map) on US unemployment rates he had seen on the Flowing Data blog. Here you can find the impressing results. Being a fan of beautiful visualizations I tried to produce 
Way back will wrote on this topic. See his previous post for Stata code for doing this. Unfortunately the R package that was used to create QQ-plots here has been removed from CRAN, so I wrote my own using ggplot2 and some code I received from Daniel Shriner at NHGRI. Of course you can use R's built-in qqplot() function, but...
Visualizing user-generated statements from GOP.com to the theme of "I'm a Republican because...", using R.
Strict quality control procedures are extremely important for any genome-wide association study. One of the first steps you should take when running QC on your GWAS is to look for related samples in your dataset. This does two things for you. First, you can get an idea of how many related samples you have in your dataset, and second,...
One of the nicer things about many statistics packages is the extremely granular control you get over your graphical output. But I lack the patience to set dozens of command line flags in R, and I'd rather not power the computer by pumping the mouse trying to set all the clicky-box options in Stata's graphics editor. I want something...
Inspired by this post (suggested here by the always useful Revolutions blog), I attempted to plot the position of CRAN mirrors on a map taking advantage of the nice R package RgoogleMaps (check the dependencies!). Below the code: library(XML) # downlo...
I guess this is not the number one post I would like to start with on this blog, but I feel the time is right for it (community-wise). I’ll move on to the subject matter in a moment, but first a short intro: This blog is written by Tal Galili. I am ...
I guess this is not the number one post I would like to start with on this blog, but I feel the time is right for it (community-wise). I’ll move on to the subject matter in a moment, but first a short intro: This blog is written by Tal Galili. I am an aspiring statistician who
As far as I know there are 3 different systems for producing figures in R: (1) base graphics, included with R, (2) the lattice package, and (3) ggplot2, one of the newer plotting systems which is, according to the creator Hadley Wickham, "based on the grammar of graphics, which tries to take the good parts of base and lattice...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
