R Articles at Pluralsight The first two articles in a series of posts on R for Business users are available at Pluralsight. R For Business Users Part 1: Importing Data R For Business Users Part 2: Data Cleaning  [Read more...]

A new blog post over at Pluralsight describes reasons R has been generating a great deal of interest in recent days:  http://blog.pluralsight.com/r-programming-language. [Read more...]

A new blog post over at Pluralsight describes reasons R has been generating a great deal of interest in recent days:  http://blog.pluralsight.com/r-programming-language. [Read more...]

Just had an article published over at Simple Talk about the 3 R Major R Graphical Systems:https://www.simple-talk.com/content/article.aspx?article=2271 [Read more...]

Just had an article published over at Simple Talk about the 3 R Major R Graphical Systems:https://www.simple-talk.com/content/article.aspx?article=2271 [Read more...]

Have you ever read a file into R and then encountered strange problems filtering and sorting because the strings were converted to factors?  For instance, you might think the two data frames, df and df2 below are contain the same data__ df-data____ write.csv(df, 'df.csv')__ df2-read__But ... [Read more...]

Have you ever read a file into R and then encountered strange problems filtering and sorting because the strings were converted to factors?  For instance, you might think the two data frames, df and df2 below are contain the same data__ df-data____ write.csv(df, 'df.csv')__ df2-read__But ... [Read more...]

News that Microsoft will acquire Revolution Analytics has raised interest about R among SQL Server and .NET developers and administrators.  Simple-Talk is an online technical journal and hub for a community of such users.  I just wrote a... [Read more...]

With today's announcement that Microsoft will acquire Revolution Analytics, it is worthwhile to consider the commercial support that has existed in different forms throughout the history of this open source language. R was based on S, which w... [Read more...]

I just wrapped up a course introducing R and RStudio with Pluralsight!  RStudio: Get Started covers  a range of topics on R itself and RStudio.  My fellow Pluralsight author Abhishek Kumar recently produced an introductory cour... [Read more...]

A number of people have asked me about the amount of time and effort involved in writing a book as I just completed one for O'Reilly (published in April and is available on Amazon).   The process at O'Reilly is unique in that a book is written and initially formatted on ... [Read more...]

Post also available with code executed inline at rpubs.com. O'Reilly recently published the results of a survey from attendees of the Strata Conference related to tool usage and salary.  The entire survey is available for download.  In the survey results, R was heralded as second only to SQL as ... [Read more...]

Well, I am tuning back in after a brief hiatus (what's a year-or-two-or-four between friends)?  Among other things, I just wrapped up a book for O'Reilly Media (Client-Server Web Apps with JavaScript and Java) due out in the Spring.   Please ... [Read more...]

Graph a github user's followers (and follower's followers).Each programming language tends to develop its own idiomatic set of data structures.  In R, data frames are often the structure of choice.  JSON (a subset of Javascript) has emerged a... [Read more...]

There has been a lot of chatter during the past week on HN generated by with Jeff Atwood's "Please don't learn to code".  Actual posts included:Please don't learn to code (www.codinghorror.com) Please Don't Become Anything, Especially Not A P... [Read more...]

 R often comes up in discussions of heavy duty scientific and statistical analysis (and so it should).  However, it is also incredibly handy for a variety of more routine developer activities.   And so I give you… log file analysis with R!  I was just involved in the launch of gradesquare.... [Read more...]

Crazy busy  - no time to blog recently. Time enough for pretty pictures based upon previous words though...(thanks http://www.wordle.net). [Read more...]

Significance MagazineAccording to Significance Magazine (jointly published by Royal Statistical Society and the American Statistical Association) the following are the top ten stories of 2010.1. Progress in the preven... [Read more...]

Thanks to everyone who visited and commented here at R-Chart over the last year!  Blogging has forced me to crystallize my thoughts and I hope others have benefited a bit from these meanderings.  It it great to interact with the&nbs... [Read more...]

A quick follow up to the previous post: about the the scores in the 2010 Google AI competition relative to programming language.  The chart above makes each language visible and discrete - and the scales are the same.library(ggplot2)df [Read more...]