Publications by Tal Galili
Rose plot using Deducers ggplot2 plot builder
The (excellent!) LearnR blog had a post today about making a rose plot in ggplot2.Following today’s announcement, by Ian Fellows, regarding the release of the new version of Deducer (0.4) offering a strong support for ggplot2 using a GUI plot builder, Ian also sent an e-mail where he shows how to create a rose plot using the new ggplot2 GUI in...
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Tips for the R beginner (a 5 page overview)
In this post I publish a PDF document titled “A collection of tips for R in Finance”. It is a basic 5 page introduction to R in finances by Arnaud Amsellem (linked in profile).The article offers tips related to the following points:Code EditorOrganizing R codeUpdate packagesGetting external data into RCommunicating with external applicationsO...
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R-bloggers announcement – maintenance mode – site might be down
Hello dear followers of R-bloggers.com Today (and probably in the next few days), R-bloggers will be down part of the time due to maintenance work. (Technical stuff: I am moving the site from shared hosting to VPS, and there seem to be a few bumps in the road) Sorry for the inconvenience, I will update once it would look like we ...
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Using the {plyr} (1.2) package parallel processing backend with windows
Hadley Wickham has just announced the release of a new R package “reshape2” which is (as Hadley wrote) “a reboot of the reshape package”. Alongside, Hadley announced the release of plyr 1.2.1 (now faster and with support to parallel computation!). Both releases are exciting due to a significant speed increase they have now gained.Yet in...
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Dumping functions from the global environment into an R script file
Looking at a project you didn’t touch for years poses many challenges. The less documentation and organization you had in your files, the more time you’ll have to spend tracing back what you did back when the code was written.I just opened up such a project, that was before I ever knew to split my .r files to “data.r”, “functions.r”,...
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Open source and money – why paying R developers might not always help the project
This post can be summed up by one two sentences: “We can’t buy love.” “Starting to pay for love could make it disappear” while at the same time “We need money to live and love”. These two conflicting forces, with relation to open source, are the topic of this post.This post is directed to the community or R users but is relevant t...
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R syntax highlighting for bloggers on WordPress.com
Good news for R bloggers who are using WordPress.com to host their blog.This week, the good people running WordPress.com (special thanks goes to Yoav Farhi), have added the ability for all the users of the WordPress.com platform to be able to highlight their R code inside posts.Basically you’ll need to wrap the code in your post like this:[sour...
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A new version of ff released (version 2.2.0)
A few hours ago, Jens Oehlschlägel has announced on the R-help mailing list of the release of a new version of the ff package.The ff package provides data structures that are stored on disk but behave (almost) as if they were in RAM by transparently mapping only a section (pagesize) in main memory – the effective virtual memory consumption per...
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Means By
The other day I was asked by a coworker hos to do a SAS Means By statement in R. I embarrassingly did not know how to so I wrote something up, and this is what I came up with, it takes a data.frame and an indexing variable and computes the means for each group defined by INDEX. This isn’t a solution that I’m terribly happy about since is in...
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A competition to recommend “relevant” R packages – and the future of R
Update: the competition was just launched. * * *What is the competition about?Drew Conway and John Myles Whyte have collected data from (52) R users about the packages they have installed. The data is now available on github for download and the contest will be run on the kaggle platform.For more details, head over to dataists.And for fun, here ...
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