I suspect I am not unique in not being able to remember how to control the point shapes in R. Part of this is a documentation problem: no package ever seems to write the shapes down. All packages just use the “usual set” that derives from S-Plus and was carried through base-graphics, to grid, lattice Related posts:
In this short post I take a look at how to use R and ggplot2 to visualize effect sizes (Cohen’s d) and how to shade the overlapping area of two distributions.
The common approach to estimating a binary dependent variable regression model is to use either the logit or probit model. Both are forms of generalized linear models (GLMs), which can be seen as modified linear regressions that allow the dependent variable to originate from non-normal distributions. The coefficients in a linear regression model are marginal 
Ever wanted to look at PubMed trends and make elegant graphs of them? Here’s an R script that will do it automatically for you.
Ok so I have now done two iterations on the a better way to visualize term frequencies using R, ggplot2 and plyr. The first was ok but ugly, the second was better but still ugly. How to read it: Frequency is segmented in to 20% quantiles The frequency ...
Cognitive Behavioral Therapy is the psychological treatment of choice for many, if not all, mental disorders. Nonetheless a majority of US clinical psychologist do not primarily identify themselves as either cognitive or behavioral therapists. Looking at data from PubMed publication counts a clear picture emerges; psychodynamic researchers might just be research loafers.
Here is an alternative to word clouds that makes it easier to get insights, but also has some of the aesthetic appeal of the traditional word cloud. My first attempt at this looked pretty bad and this is not too much better, but hopefully someone else ...
How do you easily get beautiful calendar heatmaps of time series in ggplot2? E.g:From MarginTaleI was impressed by the lattice-based implementation from Paul Bleicher of Humedica, which you can find referenced in http://blog.revolutionanalytics.c...
In this R tutorial you will learn how to work with Google n-gram data sets with the help of MySQL. The complete R code is included in this post.
With print() If you are an advanced R user, you probably know the lattice and the ggplot2 packages. They allow you to plot elegant graphics with less code (Hocking, 2009 and Sueur, 2010). If you know these two packages, you should hardly use plot() for your graphs. If you read my article on FastRWeb, you
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
