This post is the last in a series of four on boxplots and some of their extensions. Previous posts in this series have discussed basic boxplots, modified boxplots based on a robust asymmetry measure, and violin plots, an alternative that essentia...

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This first post of the Backtesting in Excel and R series will provide some resources to help smooth the transition from the familiarity and comfort of Excel to the potentially strange and intimidating world of R.I made my voyage from Excel to R more th...

This first post of the Backtesting in Excel and R series will provide some resources to help smooth the transition from the familiarity and comfort of Excel to the potentially strange and intimidating world of R.I made my voyage from Excel to R more th...

The doSMP package (and its companion package, revoIPC), previously bundled only with Revolution R, is now available on CRAN for use with open-source R under the GPL2 license. In short, doSMP makes it easy to do SMP parallel processing on a Windows box with multiple processors. (It works on Mac and Linux too, but it's been relatively easy to...

A few days ago Conrad Sanderson released version 1.1.6 of his Armadillo templated C++ library for linear algebra. Accordingly, I made a new release 0.2.14 of RcppArmadillo, our Rcpp-based integration into R which included a few local fixes. However, ...

Sed is my friend to change fixed-width text files (e.g., from an R screen output) to a comma delimited file using sed 's/ */,/g' file1 >file2.csv Note the two spaces between s/ and */.

This post is contributed by Revolution Analytics CEO Norman Nie, and cross-posted from the Future of Open Source Forum. A lot of attention has been focused recently on Big Data, and rightly so: Big Data is a Big Deal. (See this LinuxInsider article, Big Data, Big Open Source Tools, for a compehensive overview of Big Data issues.) But what,...

Rory Winston provides a detailed introduction to creating R packages. He provides a simple of, from start to finish, as well as how to incorporate native code into your package.

Hello everyone, I’m trying to create a method for calculating the 5 parameters for the 3D anisotropy in an automatic way. Basically I created a loop for analysing the range of the horizontal variogram in every direction and extrapolating the maximum (for the angle p). Then it computes the vertical variogram in the direction of maximum...

Hello everyone, I’m trying to create a method for calculating the 5 parameters for the 3D anisotropy in an automatic way. Basically I created a loop for analysing the range of the horizontal variogram in every direction and extrapolating the maximum (for the angle p). Then it computes the vertical variogram in the direction of maximum...

A casualty of cut-and-paste in Chapter 3 of Introducing Monte Carlo Methods with R. Brad McNeney from Simon Fraser sent me a nice email about the end of Example 3.6 missing a marginal estimate. Indeed, it does. And it should have been obvious from the “estimates” we derived, 19 and 16, which are not even

Welcome everybody, this is a video tutorial that will try to teach you how to use R for spatial statistics and interpolation. I’m a PhD student in soil science and in particular my project is about digital soil mapping. During my work I often use R particularly for geostatstical interpolation. ...

Welcome everybody, this is a video tutorial that will try to teach you how to use R for spatial statistics and interpolation. I’m a PhD student in soil science and in particular my project is about digital soil mapping. During my work I often use R particularly for geostatstical interpolation. ...

Revolution Analytics today announced a partnership with Jaspersoft, the makers of the most widely-used business intelligence software in the world. With this partnership, Revolution R and Jaspersoft software work together to bring the power of analytics coded in R to business users working with Business Intelligence (BI) dashboards and reports. If you're a Jaspersoft or R developer and would...

All the cool kids are talking about it so I should take some time to plug RStudio, a free open source IDE for R. Unlike some of the “beginner” IDEs like Deducer, RStudio is not designed to offer menu based … Continue reading →

I'll present Rcpp at the inaugural Geneva-R meeting. Geneva-R is an informal gathering of R enthusiasts sponsored by Mango Solutions, that builds on the success of London-R, where I presented twice, and Basel-R

Not my post, just bookmarking this. It’s from http://goanna.cs.rmit.edu.au/~fscholer/anova.php ANOVA (and R) The ANOVA Controversy ANOVA is a statistical process for analysing the amount of variance that is contributed to a sample by different factors. It was initially derived by R. A. Fisher in 1925, for the case of balanced data (equal numbers of observations

I just figure out the way to query UTR sequences from ensembl by biomart tool. It is very simple compared with using bioperl to parse gbk files to extract UTR sequences. Read More: 236 Words Totally

I just figure out the way to query UTR sequence from ensembl by biomart tool. It is very simple compare with using bioperl to parse gbk file to extract UTR sequence. Read More: 232 Words Totally