Articles by Tal Galili

R 3.3.1 is released

June 22, 2016 | Tal Galili

R 3.3.1 (codename “Bug in Your Hair”) was released yesterday You can get the latest binaries version from here. (or the .tar.gz source code from here). The full list of bug fixes is provided below new features and (this release does not introduce new features). Upgrading to R 3.3.1 on Windows ...

heatmaply: interactive heat maps (with R)

May 31, 2016 | Tal Galili

I am pleased to announce heatmaply, my new R package for generating interactive heat maps, based on the plotly R package. tl;dr By running the following 3 lines of code: install.packages("heatmaply") library(heatmaply) heatmaply(mtcars, k_col = 2, k_row = 3) %>% layout(margin = list(l = 130, b = 40)) You will get ...

R 3.3.0 is released!

May 3, 2016 | Tal Galili

R 3.3.0 (codename “Supposedly Educational”) was released today. 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 3.3.0 on Windows If you are using Windows you can easily upgrade ...

Election tRends: An interactive US election tracker (using Shiny and Plotly)

March 29, 2016 | Tal Galili

Guest post by Jonathan Sidi Introduction The US primaries are coming on fast with almost 120 days left until the conventions. After building a shinyapp for the Israeli Elections I decided to update features in the app tried out plotly in the shiny framework. As a casual voter trying to gauge ...

R 3.2.4 is released

March 11, 2016 | Tal Galili

R 3.2.4 (codename “Very Secure Dishes”) was released today. 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 3.2.4 on Windows If you are using Windows you can easily ...

It’s not the p-values’ fault – reflections on the recent ASA statement (+relevant R resources)

March 10, 2016 | Tal Galili

Joint post by Yoav Benjamini and Tal Galili. The post highlights points raised by Yoav in his official response to the ASA statement (available as on page 4 in the ASA supplemental tab), as well as offers a list of relevant R resources. Summary The ASA statement about the misuses of ...

50 years of Data Science – by David Donoho

January 5, 2016 | Tal Galili

David Donoho published a fascinating paper based on a presentation at the Tukey Centennial workshop, Princeton NJ Sept 18 2015. You can download the full paper from here. The paper got quite the attention on Hacker News, Data Science Central, Simply Stats, Xi’an’s blog, srown ion medium, and probably others. ... [Read more...]

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

January 4, 2016 | Tal Galili

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 ...

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

December 14, 2015 | Tal Galili

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 ... [Read more...]

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

December 14, 2015 | Tal Galili

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 ...

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

August 23, 2015 | Tal Galili

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 ...

R 3.2.2 is released

August 16, 2015 | Tal Galili

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 ...

Slides from my JSM 2015 talk on dendextend

August 8, 2015 | Tal Galili

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 ... [Read more...]

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

August 4, 2015 | Tal Galili

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 ...

dendextend version 1.0.1 + useR!2015 presentation

June 28, 2015 | Tal Galili

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, ...

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

June 24, 2015 | Tal Galili

(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 ... [Read more...]

R 3.2.1 is released

June 19, 2015 | Tal Galili

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 ...

A step by step (screenshots) tutorial for upgrading R on Windows

June 15, 2015 | Tal Galili

tl;dr If you are running R on Windows you can easily upgrade to the latest version of R using the installr package. Simply run the following code: # installing/loading the latest installr package: install.packages("installr"); library(installr) # install+load installr updateR() # updating R. Running “updateR()” will detect if ...

R 3.2.0 is released (+ using the installr package to upgrade in Windows OS)

April 17, 2015 | Tal Galili

R 3.2.0 (codename “Full of Ingredients”) 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 3.2.0 on Windows If you are using Windows you can easily ...

Israel’s 2015 election polls’ analysis with Shiny + ggplot2

March 16, 2015 | Tal Galili

(This is a guest post by my friend Yoni Sidi, a PhD candidate in statistics at the Hebrew University) Background The Israeli elections are coming up this Tuesday, 17/3/2015 (i.e.: tomorrow!). They are a bit more complicated than your average US presidential race. The elections in Israel are based on ...

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