Blog Archives

Multidimensional Scaling with R (from “Mastering Data Analysis with R”)

January 4, 2016
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Multidimensional Scaling with R (from “Mastering Data Analysis with R”)

Guest post by Gergely Daróczi. If you like this content, you can buy the full 396 paged e-book for 5 USD until January 8, 2016 as part of Packt’s “$5 Skill Up Campaign” at http://bit.ly/mastering-R Feature extraction tends to be one of the most important steps in machine learning and data science projects, so I decided to … Continue reading...

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R 3.2.3 is released (with improvements for Windows users, and general bug fixes)

December 14, 2015
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Rlogo

R 3.2.2 (codename “Wooden Christmas Tree”) was released several days ago. You can get the latest binaries version from here. (or the .tar.gz source code from here). The full list of new features and bug fixes is provided below. Major changes in R 3.2.3 As highlighted by David Smith, this release makes a few small improvements and bug fixes to … Continue reading...

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“Why do people contribute to the R?” – concolusions from a new PNAS article

December 14, 2015
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“Why do people contribute to the R?” – concolusions from a new PNAS article

tl;dr: People contribute to R for various reasons, which evolves with time. The main reasons appear to be: “fun coding”, personal commitment to the community, interaction with like-minded and/or important people  – leading to higher self-esteem, future job opportunities, a chance to express oneself and enjoyable social inclusion. From the abstract One of the cornerstones of … Continue reading...

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labels.dendrogram in R 3.2.2 can be ~70 times faster (for trees with 1000 labels)

August 23, 2015
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labels.dendrogram in R 3.2.2 can be ~70 times faster (for trees with 1000 labels)

The recent release of R 3.2.2 came with a small (but highly valuable) improvement to the stats:::labels.dendrogram function. When working with dendrograms with (say) 1000 labels, the new function offers a 70 times speed improvement over the version of the function from R 3.2.1. This speedup is even better than the Rcpp version of labels.dendrogram … Continue reading...

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R 3.2.2 is released

August 16, 2015
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R 3.2.2 is released

R 3.2.2 (codename “Fire Safety”) was released last weekend. You can get the latest binaries version from here. (or the .tar.gz source code from here). The full list of new features and bug fixes is provided below. SOME OF THE CHANGES I personally found two things particularly interesting in this release: setInternet2(TRUE) is now the default for windows (which will … Continue reading...

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Slides from my JSM 2015 talk on dendextend

August 8, 2015
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heatmap_dendextend_Picture1

If you happen to be at the JSM 2015 conference this week, then this Monday, at 2pm, I will give a talk on the dendextend R package  (in the session “Advances in Graphical Frameworks and Methods Part 1“) – feel free to drop by and say hi. Here are my slides for the intended talk:   … Continue reading...

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dendextend: a package for visualizing, adjusting, and comparing dendrograms (based on a paper from “bioinformatics”)

August 4, 2015
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dendextend: a package for visualizing, adjusting, and comparing dendrograms (based on a paper from “bioinformatics”)

This post on the dendextend package is based on my recent paper from the journal bioinformatics (a link to a stable DOI). The paper was published just last week, and since it is released as CC-BY, I am permitted (and delighted) to republish it here in full: abstract Summary: dendextend is an R package for creating and comparing visually appealing … Continue reading...

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dendextend version 1.0.1 + useR!2015 presentation

June 28, 2015
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dendextend version 1.0.1 + useR!2015 presentation

My R package dendextend (version 1.0.1) is now on CRAN! The dendextend package Offers a set of functions for extending dendrogram objects in R, letting you visualize and compare trees of hierarchical clusterings. With it you can (1) Adjust a tree’s graphical parameters – the color, size, type, etc of its branches, nodes and labels. … Continue reading...

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Setting Rstudio server using Amazon Web Services (AWS) – a step by step (screenshots) tutorial

June 24, 2015
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AWS_R

(this is a guest post by Liad Shekel) Amazon Web Services (AWS) include many different computational tools, ranging from storage systems and virtual servers to databases and analytical tools. For us R-programmers, being familiar and experienced with these tools can be extremely beneficial in terms of efficiency, style, money-saving and more. In this post we present … Continue reading...

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R 3.2.1 is released

June 19, 2015
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R 3.2.1 is released

R 3.2.1 (codename “World-Famous Astronaut”) was released yesterday. You can get the latest binaries version from here. (or the .tar.gz source code from here). The full list of new features and bug fixes is provided below. Upgrading to R 3.2.1 on Windows If you are using Windows you can easily upgrade to the latest version of R using the installr package. … Continue reading...

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