Hamish Bowman recently posted a new GRASS module (d.barb) that can be used to depict the direction and magnitude components of some vector (e.g. wind field) along a raster surface or at points in space. An example (c/o Hamish): read more

When you first learnt about data frames in R, I’m sure that, like me, you thought “This is a lot of hassle having to type the names of data frames over and over in order to access each column”. library(MASS) anorexia$wtDiff <- anorexia$Postwt - anorexia$Prewt #I have to type anorexia how many times? Indeed, any

Dirk and I gave a full day Rcpp workshop yesterday in Chicago before the R in Finance conference. The pdfs of the slides are available here: part 1 (intro), part 2 (details), part 3 (modules) and part 4 (applications)

Dirk and I gave a full day Rcpp workshop yesterday in Chicago before the R in Finance conference. The pdfs of the slides are available here: part 1 (intro), part 2 (details), part 3 (modules) and part 4 (applications)

Leading analyst firm Gartner has just published its "Cool Vendors in Analytics and Business Intelligence" report for 2011 (download it here if you have a Gartner subscription). In the report, Revolution Analytics is named a Gartner Cool Vendor, and recognizes the company as "innovative, impactful and intriguing": Driven in part by the rise of big data, business intelligence (BI)...

I was recently introduced to RStudio, a new integrated development environment for R, it is just amazing! It is free, and open, compatible with PC/Mac/Linux OSs. You can also choose to run it in the cloud, and access it from your favorite web browser. As you can see, the window divides into four in a

Romain and I just posted our slides from yesterday's Rcpp workshop and class (preceding the now-ongoing R/Finance conference). You can access the slides via my presentation page, or directly from here as Part 1 (Introduction), Part 2 (Details), Part ...

As has been discussed on various blogs the RStudio interface to R has been released. It is definitely worth checking out as it has the potential to improve the user experience for R.

I was reading various R blogs and saw very nice looking plots created with ggplot2 package. Especially this blog was useful because of link to a very interesting book about ggplot2. I want to display and update the latest co-integrated pairs every day ...

I made FRBData package and registerd it on CRAN.This package allow you to download financial data from FRB's website.This website provide many economical data such as consumer credit, money stock.This article show you how to use this package.(But, it has only a function about interest rate now. I will create other functions to download other macro-economical data in next version.)First,...

I made FRBData package and registerd it on CRAN.This package allow you to download financial data from FRB's website.This website provide many economical data such as consumer credit, money stock.This article show you how to use this package.(But, it has only a function about interest rate now. I will create other functions to download other macro-economical data in next version.) First,...

We are happy to report that one of the Google Summer of Code students from last year, Ian Fellows, has been awarded the John M. Chambers Statistical Software Award for his work with the R Project. This award will be presented at the annual Joint Statistical Meeting in August.Ian’s project involved extending...

We are happy to report that one of the Google Summer of Code students from last year, Ian Fellows, has been awarded the John M. Chambers Statistical Software Award for his work with the R Project. This award will be presented at the annual Joint Statistical Meeting in August. Ian’s project involved extending...

August last year I asked on BioStar about how to import RDF into the R statistical package and at the time nothing seemed existing. Over the past few weeks I ported code I wrote for Bioclipse to create the rrdf package for R, which is now available fro...

We're on our way to Chicago for the annual conference for R users in Finance, R/Finance 2011. Revolution Analytics is proud to once again sponsor this conference, and during the sponsor lunch session at noon on Saturday, we're honoured to have Guy Yollin show how the big-data capabilities of Revolution R Enterprise can be used for quantitative finance. Here...

I’ve also previously put up a couple of posts about aggregating data in R. In this post, I’m going to be trying some other alternative methods for aggregating the dataset. Before I begin, I’d like to thank Matthew Dowle for highlighting these to me. It’s a bit daunting at first, deciding which method of aggregating data is

Today I have been playing with the errorbars from knime. To recreate the plot from http://flyordie.sin.khk.be/2011/04/20/day-27-a-lot-of-graphics-in-one-place/ I had to be able to create 2 y-axis, and multiple plots on 1 graph. At the end of the day I ...