Further Adventures in Visualisation with ggplot2

April 25, 2011 | hayward

So I previously took a look at some data of player performance from a computer game. In this post, I’m going to do some further visualisations using ggplot2. The data consists of different types of player character, different roles for those characters, and their overall damage output (the unit ... [Read more...]

Sexy, Geeky Graphs using ggplot2 in R

April 22, 2011 | hayward

So I’ve been looking for some data to play with while learning R, other than the data I’m analysing for various experiments and papers I’m working on. I thought to myself, “Hey, this R stuff is pretty geeky. Can I engage in a higher level of geekiness?” ... [Read more...]

Progress reading SAS sas7bdat files (natively) in R

April 18, 2011 | BioStatMatt

This post describes some preliminary results from a compatibility study of the SAS sas7bdat file format. The most current results stored in a github repository here: sas7bdat The ultimate goal is a native solution to the incompatibility between open-source statistical software (e.g. R) and sas7bdat database ... [Read more...]

Pivot Tables and Medians in R

April 16, 2011 | hayward

Pivot Tables are a useful way of aggregating data into the format that you’re after. In this example, I’m going to be using R to pivot some data and calculate medians for me. This is useful because Excel can calculate medians (the =MEDIAN(values)) function, but what it ... [Read more...]

RStudio 0.93 Beta Available

April 15, 2011 | JeroldHaas

In case you miseed, 0.93 Beta of RStudio is released! A good set of fixes, including vignette() (sorry edit() not compatible yet). The panel layout is fully customizable, and there are a load of bug fixes. See the Release Notes for more info.
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April 6, 2011 | BioStatMatt

A recent R-help post asks for examples of Sweave use for web appliations. I think there is very little out there; maybe nothing. Below is a proof of concept for web-based Sweave-ing with rApache. But, it will soon be possible to do this with R's built-in web server. The idea ... [Read more...]

A Request for Foursquare Data

March 25, 2011 | John Myles White

[UPDATE 3/28/2011: Fixed an enormous bug in the R code.] I’m trying to collect data sets that showcase how the classical statistical distributions appear in modern contexts. I’ve already got some data that shows how the gamma distribution appears in video game scores, and now I’m hoping to ... [Read more...]

A Short Side-by-side Comparison of the R and NumPy Array Types

March 22, 2011 | BioStatMatt

Feature NumPy R contiguous (virtual) memory ✔ ✔ 'view' memory model ✔ ✘ subset-assignment ✔ ✔ vectorized operations ✔ ✔ memory-mapping ✔ ✘* broadcasting rules ✔ ✔ index arrays ✔ ✔ This comparison is current as of R 2.13.0, NumPy version 1.4.1, and other web resources to date. Because this post was motivated by a [...] [Read more...]

A 3D Version of R’s curve() Function

March 21, 2011 | John Myles White

I like exploring the behavior of functions of a single variable using the curve() function in R. One thing that seems to be missing from R’s base functions is a tool for exploring functions of two variables. I asked for examples of such a function on Twitter today and ...
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Updated tty Connection for R

March 17, 2011 | BioStatMatt

Below are some links to a patch against the R-2.12.2 source code that implements a tty connection for R. Since the release of R-2.13.0 is coming soon, I’ll have a patch for it soon also. What’s a tty connection? The tty connection is an R interface to computer ... [Read more...]

A quick look at #march11 / #saudi tweets

March 12, 2011 | mjbommar

Well, so much for that #march11 #Saudi day of rage.  Whether it was really the "tempest in a teacup" that  Prince Al-Waleed suggested on CNBC (video below, transcript here) or not, the oil complex and Saudi markets seem to have shrugged … Continue reading → [Read more...]

Yet another R report generator, and more!

March 4, 2011 | BioStatMatt

I recently uploaded some code to R-forge related to an R package I’ve been working on, titled yarr. The work was motivated by a desire to embed R code and output within my HTML blog posts! Months ago, I wrote about a potential solution to this using the brew ... [Read more...]

Review of R Graphs Cookbook

March 1, 2011 | John Myles White

The kind people at Packt Publishing recently asked me to review one of their newest R books: the R Graphs Cookbook. In general, I think pretty highly of the book: it provides a nice overview of the basic tools for visualizing data in R. If you’re just getting started ... [Read more...]

The RStudio IDE: first impressions are positive

February 28, 2011 | nsaunders

Integrated development environments (IDEs) are software development tools, providing an interface that enables you to write, debug, run and view the output of your code. Whether you need an IDE or find them useful depends very much on your own preferences and style of working. In my own case for ... [Read more...]
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